Physical Review Materials - October 2022

Physical Review Materials View Email Online   Volume 6, Issue 10 October 2022   View Issue   Advertisement Sign up for the latest APS Science Trust Project training The APS Science Trust Project was born out of member-demand to address misinformation about science, which has been increasing due to the broad accessibility of various streams of communication. This free virtual workshop, held on 4 consecutive Tuesdays, starting on November 29, 1:00 - 3:00 p.m. ET, via Zoom, will focus on climate change misinformation, but the skills and methods are appropriate for addressing a wide range of misinformation topics. Register now »     Advertisement Women in Physics Group Grants Build your on-campus physics community with help from a Women in Physics Group Grant. The APS Committee on the Status of Women in Physics (CSWP) is now accepting proposals from undergraduate and graduate students who are interested in creating new WiP groups or enhancing existing ones. The deadline for proposals is November 21. Learn more »     Not an APS member? Join today to start connecting with a community of more than 50,000 physicists.   EDITORIALS AND ANNOUNCEMENTS Editorial: A Welcoming Home for Applied Science Jessica Thomas and Michael Thoennessen Phys. Rev. Materials 6, 100001 (2022) – Published 11 October 2022   HIGHLIGHTED ARTICLES Featured in Physics Editors' Suggestion Electronegative metal dopants improve switching variability in Al2O3 resistive switching devices Zheng Jie Tan, Vrindaa Somjit, Cigdem Toparli, Bilge Yildiz, and Nicholas Fang Phys. Rev. Materials 6, 105002 (2022) – Published 19 October 2022 Synopsis:Impurities Enable High-Quality Resistive Switching Devices Resistive switching random access memories (RRAMs) promise to overcome the limitation of time- and energy-consumption set by increased training demand in the deep neural network. These devices enable the colocation of memory and processing by storing and utilizing information in the form of conductive networks, such as those made of oxygen vacancies. However, the inherent stochastic nature of atomic motion results in poor reliability and high switching variability in these devices, hindering their widespread use. In this paper, the authors propose a method to substantially reduce the switching variability of RRAM devices by doping the RRAM oxide electrolyte with electronegative metals. They find that electronegative metals reduce the oxygen vacancy formation energy, thereby pinning the conductive filament formation along fixed, predictable paths. This improved reliability enables multibit switching and can facilitate integration into large-scale hardware neural networks.     Featured in Physics Realization of efficient tuning of the Fermi level in iron-based ferrimagnetic alloys N. Yamashita, E. Shigematsu, S. Honda, R. Ohshima, M. Shiraishi, and Y. Ando Phys. Rev. Materials 6, 104405 (2022) – Published 12 October 2022 Synopsis:A Ferromagnet That Easily Sheds Spins Researchers demonstrate room-temperature spin transfer across an interface between an iron-based ferromagnet and a semiconductor, opening a route to creating novel spintronic devices.     Featured in Physics Helical microstructures in molluscan biomineralization are a biological example of close packed helices that may form from a colloidal liquid crystal precursor in a twist–bend nematic phase Katarzyna Berent, Julyan H. E. Cartwright, Antonio G. Checa, Carlos Pimentel, Paula Ramos-Silva, and C. Ignacio Sainz-Díaz Phys. Rev. Materials 6, 105601 (2022) – Published 17 October 2022 Synopsis:The Gap-Free Helices of Sea Snails The shells of some mollusk species have compact helical structures that researchers propose develop from the self-assembly of a liquid-crystalline material.     Editors' Suggestion Transient electron scavengers modulate carrier density at a polar/nonpolar perovskite oxide heterojunction Widitha S. Samarakoon, Peter V. Sushko, Dooyong Lee, Bharat Jalan, Hua Zhou, Yingge Du, Zhenxing Feng, and Scott A. Chambers Phys. Rev. Materials 6, 103405 (2022) – Published 19 October 2022 Modern thin-film synthesis enables the fabrication of heterostructures in which individual phases can consist of as little as one unit cell. In this extreme thin-film limit, point defects can have a measurable effect on the electronic properties. Such is the case for SrTiO3/1 u.c. NdTiO3/SrTiO3(001). Assuming perfect materials and interfaces, 0.5 electrons should drift from the NTO to each STO layer to compensate the interface dipoles that form. However, the actual carrier density is half this value. This paper shows that transient electron scavengers create an electrostatic potential drop that drives defect formation and lowers the carrier density.     Editors' Suggestion Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial BixY3−xFe5O12 films Takashi Kikkawa, Koichi Oyanagi, Tomosato Hioki, Masahiko Ishida, Zhiyong Qiu, Rafael Ramos, Yusuke Hashimoto, and Eiji Saitoh Phys. Rev. Materials 6, 104402 (2022) – Published 6 October 2022 Resonant enhancement of spin Seebeck effect (SSE) due to hybridized magnon-phonon excitation (magnon polarons) was recently observed in Y3Fe5O12 (YIG). The effect appears at high magnetic fields when the phonon dispersions are tangential to the magnon dispersion curve. Here, the authors show that the resonance field can be shifted by ~ 2 Tesla to the lower-field side by the Bi substitution in YIG. The result is attributed to the change in the phonon dispersions by the Bi doping. The authors also observe in Bi0.9Y2.1Fe5O12 an enhancement 500% greater than the background magnonic SSE signal at the low temperature of 3 K. Moreover, anisotropic magnon-polaron transport was found through the longitudinal and nonlocal SSE measurements, which provides a clue to further unraveling the physics of magnon-polaron SSEs.     Editors' Suggestion New Gd-based magnetic compound GdPt2B with a chiral crystal structure Yoshiki J. Sato, Hikari Manako, Yoshiya Homma, Dexin Li, Ryuji Okazaki, and Dai Aoki Phys. Rev. Materials 6, 104412 (2022) – Published 24 October 2022 Chirality, a fundamental property of symmetry, can produce unique magnetic and electronic properties in materials. The discovery of new magnetic compounds with "chirality" leads to the exploration of exotic physical phenomena in chiral crystals. Here, the authors report the discovery and single-crystal growth of a novel Gd-based magnetic compound GdPt2B with a chiral crystal structure. GdPt2B exhibits a magnetic transition at 87 K and shows magnetic properties arising from the competition between ferromagnetic and Dzyaloshinskii-Moriya interactions. These results pave the way for demonstrating novel spin textures, topological electronic states, and exotic transport phenomena in the novel rare-earth-based chiral crystal.     Editors' Suggestion Letter Out-of-plane polarization and topological magnetic vortices in multiferroic CrPSe3 Weiwei Gao, Jijun Zhao, and James R. Chelikowsky Phys. Rev. Materials 6, L101402 (2022) – Published 19 October 2022 Intrinsic low-dimensional multiferroic materials are rare, but they have been pursued for years as promising platforms for exploring the coupling between ferroic orders and hosting novel quantum phenomena. Using first-principles density functional theory calculations, the authors show CrPSe3, an experimentally synthesized van der Waals layered material, demonstrates several dynamically stable multiferroic phases, including anti-ferroelectric and ferroelectric phases, which show ferromagnetism and compete with the experimental paraelectric phase. These multiferroic phases have non-negligible Dzyaloshinskii-Moriya interactions that may support chiral spin textures. The small energy barriers and energy differences between phases can be effectively tuned under moderate strain or electric fields.     LETTERS Structural and mechanical properties Letter Coalescence dynamics of prismatic dislocation loops due to vacancy supersaturation Cameron McElfresh, Nicolas Bertin, Sylvie Aubry, and Jaime Marian Phys. Rev. Materials 6, L100601 (2022) – Published 5 October 2022   Letter Towards commonality between shear banding and glass-liquid transition in metallic glasses Zeng-Yu Yang and Lan-Hong Dai Phys. Rev. Materials 6, L100602 (2022) – Published 26 October 2022   Development of new methods for materials Letter Effect of crystal defects in iron on carbon diffusivity: Analytical model married to atomistics Sebastián Echeverri Restrepo, Predrag Andric, and Anthony T. Paxton Phys. Rev. Materials 6, L100801 (2022) – Published 13 October 2022   Magnetic, ferroelectric, and multiferroic materials Letter Generation and routing of nanoscale droplet solitons without compensation of magnetic damping Andrei I. Nikitchenko and Nikolay A. Pertsev Phys. Rev. Materials 6, L101401 (2022) – Published 5 October 2022   Editors' Suggestion Letter Out-of-plane polarization and topological magnetic vortices in multiferroic CrPSe3 Weiwei Gao, Jijun Zhao, and James R. Chelikowsky Phys. Rev. Materials 6, L101402 (2022) – Published 19 October 2022 Intrinsic low-dimensional multiferroic materials are rare, but they have been pursued for years as promising platforms for exploring the coupling between ferroic orders and hosting novel quantum phenomena. Using first-principles density functional theory calculations, the authors show CrPSe3, an experimentally synthesized van der Waals layered material, demonstrates several dynamically stable multiferroic phases, including anti-ferroelectric and ferroelectric phases, which show ferromagnetism and compete with the experimental paraelectric phase. These multiferroic phases have non-negligible Dzyaloshinskii-Moriya interactions that may support chiral spin textures. The small energy barriers and energy differences between phases can be effectively tuned under moderate strain or electric fields.     Superconducting materials Letter Pressure-induced superconductivity in magnetic topological insulator candidate MnSb4Te7 Cuiying Pei (裴翠颖), Ming Xi (席明), Qi Wang (王琦), Wujun Shi (史武军), Juefei Wu (吴珏霏), Lingling Gao (高玲玲), Yi Zhao (赵毅), Shangjie Tian (田尚杰), Weizheng Cao (曹渭征), Changhua Li (李昌华), Mingxin Zhang (张明鑫), Shihao Zhu (朱世豪), Yulin Chen (陈宇林), Hechang Lei (雷和畅), and Yanpeng Qi (齐彦鹏) Phys. Rev. Materials 6, L101801 (2022) – Published 24 October 2022   ARTICLES Crystal growth, crystallization, and kinetics Single crystal growth of iridates without platinum impurities Jimin Kim, Hoon Kim, Hyun-Woo J. Kim, Sunwook Park, Jin-Kwang Kim, Junyoung Kwon, Jungho Kim, Hyeong Woo Seo, Jun Sung Kim, and B. J. Kim Phys. Rev. Materials 6, 103401 (2022) – Published 12 October 2022   Unusual electric polarization behavior in elemental quasi-two-dimensional allotropes of selenium Dan Liu, Lin Han, Ran Wei, Shixin Song, Jie Guan, Shuai Dong, and David Tománek Phys. Rev. Materials 6, 103403 (2022) – Published 14 October 2022   Benchmarking of different strategies to include anisotropy in a curvature-driven multi-phase-field model Martin Minar and Nele Moelans Phys. Rev. Materials 6, 103404 (2022) – Published 18 October 2022   Editors' Suggestion Transient electron scavengers modulate carrier density at a polar/nonpolar perovskite oxide heterojunction Widitha S. Samarakoon, Peter V. Sushko, Dooyong Lee, Bharat Jalan, Hua Zhou, Yingge Du, Zhenxing Feng, and Scott A. Chambers Phys. Rev. Materials 6, 103405 (2022) – Published 19 October 2022 Modern thin-film synthesis enables the fabrication of heterostructures in which individual phases can consist of as little as one unit cell. In this extreme thin-film limit, point defects can have a measurable effect on the electronic properties. Such is the case for SrTiO3/1 u.c. NdTiO3/SrTiO3(001). Assuming perfect materials and interfaces, 0.5 electrons should drift from the NTO to each STO layer to compensate the interface dipoles that form. However, the actual carrier density is half this value. This paper shows that transient electron scavengers create an electrostatic potential drop that drives defect formation and lowers the carrier density.     Investigation of in-liquid ordering mediated transformations in Al-Sc via ab initio molecular dynamics and unsupervised learning Deep Choudhuri, Bhaskar S. Majumdar, and Hunter Wilkinson Phys. Rev. Materials 6, 103406 (2022) – Published 25 October 2022   Structure and phase transitions of metastable hexagonal uranium thin films Rebecca Nicholls, Chris Bell, Ross Springell, Gerard H. Lander, and Johann Bouchet Phys. Rev. Materials 6, 103407 (2022) – Published 28 October 2022   Structural and mechanical properties Detection of the onset of yielding and creep failure from digital image correlation Tero Mäkinen, Agata Zaborowska, Małgorzata Frelek-Kozak, Iwona Jóźwik, Łukasz Kurpaska, Stefanos Papanikolaou, and Mikko J. Alava Phys. Rev. Materials 6, 103601 (2022) – Published 10 October 2022   Accurate ab initio modeling of solid solution strengthening in high entropy alloys Franco Moitzi, Lorenz Romaner, Andrei V. Ruban, and Oleg E. Peil Phys. Rev. Materials 6, 103602 (2022) – Published 24 October 2022   Structure and glide of Lomer and Lomer-Cottrell dislocations: Atomistic simulations for model concentrated alloy solid solutions Anas Abu-Odeh, Tarun Allaparti, and Mark Asta Phys. Rev. Materials 6, 103603 (2022) – Published 31 October 2022   Development of new methods for materials Morphological evolution via surface diffusion learned by convolutional, recurrent neural networks: Extrapolation and prediction uncertainty Daniele Lanzoni, Marco Albani, Roberto Bergamaschini, and Francesco Montalenti Phys. Rev. Materials 6, 103801 (2022) – Published 3 October 2022   Deep learning interatomic potential for Ca-O system at high pressure Fulun Wu, Feng Zheng, Weibo He, Xinrui Cao, Tie-Yu Lü, Zi-Zhong Zhu, and Shunqing Wu Phys. Rev. Materials 6, 103802 (2022) – Published 28 October 2022   Two-dimensional materials Tunable long-lived exciton lifetime in single-layer two-dimensional LiAlTe2 Hao Dong (董昊), Jinfeng Zhao (赵金峰), Huan Yang (杨欢), and Yujun Zheng (郑雨军) Phys. Rev. Materials 6, 104001 (2022) – Published 10 October 2022   Single-dopant band bending fluctuations in MoSe2 measured with electrostatic force microscopy Megan Cowie, Rikke Plougmann, Zeno Schumacher, and Peter Grütter Phys. Rev. Materials 6, 104002 (2022) – Published 11 October 2022   Theoretical exploration of mechanical and superconducting properties of two-dimensional Cairo penta-BP2: A first-principles study Zhiyuan Wen, Zheng Liu, Jing Zhu, and Shunhong Zhang Phys. Rev. Materials 6, 104003 (2022) – Published 18 October 2022   Two-dimensional heterostructures formed by graphenelike ZnO and MgO monolayers for optoelectronic applications Mahsa Seyedmohammadzadeh, Cem Sevik, and Oğuz Gülseren Phys. Rev. Materials 6, 104004 (2022) – Published 24 October 2022   Monolayer C2/m−SnX (X=P, As): An in-plane anisotropic two-dimensional direct band gap semiconductor with ultrahigh mobility, ideal IR-VIS light transparency, and high absorbance Qing-Yuan Chen, Fei-Jie Huang, Ju-Qi Ruan, Tai Ma, Kai Xiong, and Yao He Phys. Rev. Materials 6, 104005 (2022) – Published 28 October 2022   Topological and Dirac materials Electronic structures and stability investigation of large band gap topological insulators MTl4Te3 (M = Cd, Hg) Ying Li and Gang Xu Phys. Rev. Materials 6, 104201 (2022) – Published 10 October 2022   Highly anisotropic magnetism in the vanadium-based kagome metal TbV6Sn6 Ganesh Pokharel, Brenden Ortiz, Juan Chamorro, Paul Sarte, Linus Kautzsch, Guang Wu, Jacob Ruff, and Stephen D. Wilson Phys. Rev. Materials 6, 104202 (2022) – Published 13 October 2022   Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: Angle-resolved photoemission study Chien-Wen Chuang, Seigo Souma, Ayumi Moriya, Kosuke Nakayama, Atsutoshi Ikeda, Mayo Kawaguchi, Keito Obata, Shanta Ranjan Saha, Hidemitsu Takahashi, Shunsaku Kitagawa, Kenji Ishida, Kiyohisa Tanaka, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Shingo Yonezawa, Johnpierre Paglione, Yoshiteru Maeno, and Takafumi Sato Phys. Rev. Materials 6, 104203 (2022) – Published 24 October 2022   Momentum-inversion symmetry breaking on the Fermi surface of magnetic topological insulators Hengxin Tan, Daniel Kaplan, and Binghai Yan Phys. Rev. Materials 6, 104204 (2022) – Published 27 October 2022   Magnetic, ferroelectric, and multiferroic materials Electronic structure and magnetic properties of 3d−4f double perovskite material S. Kundu, A. Pal, Amit Chauhan, K. Patro, K. Anand, S. Rana, V. G. Sathe, Amish G. Joshi, P. Pal, K. Sethupathi, B. R. K. Nanda, and P. Khuntia Phys. Rev. Materials 6, 104401 (2022) – Published 5 October 2022   Editors' Suggestion Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial BixY3−xFe5O12 films Takashi Kikkawa, Koichi Oyanagi, Tomosato Hioki, Masahiko Ishida, Zhiyong Qiu, Rafael Ramos, Yusuke Hashimoto, and Eiji Saitoh Phys. Rev. Materials 6, 104402 (2022) – Published 6 October 2022 Resonant enhancement of spin Seebeck effect (SSE) due to hybridized magnon-phonon excitation (magnon polarons) was recently observed in Y3Fe5O12 (YIG). The effect appears at high magnetic fields when the phonon dispersions are tangential to the magnon dispersion curve. Here, the authors show that the resonance field can be shifted by ~ 2 Tesla to the lower-field side by the Bi substitution in YIG. The result is attributed to the change in the phonon dispersions by the Bi doping. The authors also observe in Bi0.9Y2.1Fe5O12 an enhancement 500% greater than the background magnonic SSE signal at the low temperature of 3 K. Moreover, anisotropic magnon-polaron transport was found through the longitudinal and nonlocal SSE measurements, which provides a clue to further unraveling the physics of magnon-polaron SSEs.     Single crystal synthesis and magnetic properties of a Shastry-Sutherland lattice compound BaNd2ZnS5 Brianna R. Billingsley, Madalynn Marshall, Zhixue Shu, Huibo Cao, and Tai Kong Phys. Rev. Materials 6, 104403 (2022) – Published 7 October 2022   Stacking dependent ferroelectricity and antiferroelectricity in quasi-one-dimensional oxyhalides NbOX3 Wencong Sun, Ning Ding, Jun Chen, Hai-Peng You, Jin Peng, Shan-Shan Wang, and Shuai Dong Phys. Rev. Materials 6, 104404 (2022) – Published 10 October 2022   Featured in Physics Realization of efficient tuning of the Fermi level in iron-based ferrimagnetic alloys N. Yamashita, E. Shigematsu, S. Honda, R. Ohshima, M. Shiraishi, and Y. Ando Phys. Rev. Materials 6, 104405 (2022) – Published 12 October 2022 Synopsis:A Ferromagnet That Easily Sheds Spins Researchers demonstrate room-temperature spin transfer across an interface between an iron-based ferromagnet and a semiconductor, opening a route to creating novel spintronic devices.     Enhancing voltage-controlled magnetic anisotropy in Fe80B20/MgO/HfO2 thin films by dielectric constant modulation Hiroshige Onoda, Tomohiro Nozaki, Shingo Tamaru, Takayuki Nozaki, and Shinji Yuasa Phys. Rev. Materials 6, 104406 (2022) – Published 13 October 2022   Spin-lattice coupling in magnetocaloric Gd5(Ge,Si)4 alloys by $in$ $situ$ x-ray pair distribution analysis in magnetic field Valeri Petkov, Tadisetti D. Rao, AM Milinda Abeykoon, Jorge R. Galeano-Cabral, and Kaya Wei Phys. Rev. Materials 6, 104407 (2022) – Published 13 October 2022   Competition of magnetocrystalline anisotropy of uranium layers and zigzag chains in UNi0.34Ge2 single crystals Adam P. Pikul, Maria Szlawska, Xiaxin Ding, Józef Sznajd, Masashi Ohashi, Dorota A. Kowalska, Mathieu Pasturel, and Krzysztof Gofryk Phys. Rev. Materials 6, 104408 (2022) – Published 14 October 2022   Density functional theory investigations into the magnetic ordering of U3O8 Sara B. Isbill, Ashley E. Shields, J. L. Niedziela, and Andrew J. Miskowiec Phys. Rev. Materials 6, 104409 (2022) – Published 19 October 2022   Electric field control of phonon angular momentum in perovskite BaTiO3 Kevin Moseni, Richard B. Wilson, and Sinisa Coh Phys. Rev. Materials 6, 104410 (2022) – Published 21 October 2022   Thermal stability of nanoscale ferroelectric domains by molecular dynamics modeling Arne J. Klomp, Ruben Khachaturyan, Theophilus Wallis, Karsten Albe, and Anna Grünebohm Phys. Rev. Materials 6, 104411 (2022) – Published 24 October 2022   Editors' Suggestion New Gd-based magnetic compound GdPt2B with a chiral crystal structure Yoshiki J. Sato, Hikari Manako, Yoshiya Homma, Dexin Li, Ryuji Okazaki, and Dai Aoki Phys. Rev. Materials 6, 104412 (2022) – Published 24 October 2022 Chirality, a fundamental property of symmetry, can produce unique magnetic and electronic properties in materials. The discovery of new magnetic compounds with "chirality" leads to the exploration of exotic physical phenomena in chiral crystals. Here, the authors report the discovery and single-crystal growth of a novel Gd-based magnetic compound GdPt2B with a chiral crystal structure. GdPt2B exhibits a magnetic transition at 87 K and shows magnetic properties arising from the competition between ferromagnetic and Dzyaloshinskii-Moriya interactions. These results pave the way for demonstrating novel spin textures, topological electronic states, and exotic transport phenomena in the novel rare-earth-based chiral crystal.     Defect control in the Heisenberg-Kitaev candidate material NaRuO2 Brenden R. Ortiz, Paul M. Sarte, Alon H. Avidor, and Stephen D. Wilson Phys. Rev. Materials 6, 104413 (2022) – Published 26 October 2022   Semiconducting materials Phase stability of (AlxGa1−x)2O3 polymorphs: A first-principles study Sai Mu and Chris G. Van de Walle Phys. Rev. Materials 6, 104601 (2022) – Published 4 October 2022   Thermal conductivity of AlxGa1−xN (0≤x≤1) epitaxial layers Dat Q. Tran, Rosalia D. Carrascon, Motoaki Iwaya, Bo Monemar, Vanya Darakchieva, and Plamen P. Paskov Phys. Rev. Materials 6, 104602 (2022) – Published 7 October 2022   Rashba effects in lead-free ferroelectric semiconductor [CH3PH3]SnBr3 Ravi Kashikar, P. S. Ghosh, S. Lisenkov, A. Stroppa, and I. Ponomareva Phys. Rev. Materials 6, 104603 (2022) – Published 10 October 2022   Hematite surfaces: Band bending and local electronic states S. Rostami, N. Seriani, and R. Gebauer Phys. Rev. Materials 6, 104604 (2022) – Published 10 October 2022   Quasiparticle self-consistent GW band structures and phase transitions of LiAlO2 in tetrahedrally and octahedrally coordinated structures Phillip Popp and Walter R. L. Lambrecht Phys. Rev. Materials 6, 104605 (2022) – Published 11 October 2022   Band gaps of halide perovskites from a Wannier-localized optimally tuned screened range-separated hybrid functional Guy Ohad, Dahvyd Wing, Stephen E. Gant, Ayala V. Cohen, Jonah B. Haber, Francisca Sagredo, Marina R. Filip, Jeffrey B. Neaton, and Leeor Kronik Phys. Rev. Materials 6, 104606 (2022) – Published 13 October 2022   Resolving decay-time dependent photoluminescence induced by phonon-dressed excitons in ZnO Ryu Yukawa, Susumu Yamamoto, Ren Arita, Yuki Minami, Kohei Yamanoi, Kenichi Ozawa, Kazuyuki Sakamoto, Toshihiko Shimizu, Nobuhiko Sarukura, and Iwao Matsuda Phys. Rev. Materials 6, 104607 (2022) – Published 21 October 2022   Strain effect on the ground-state structure of Sr2SnO4 Ruddlesden-Popper oxides Hwanhui Yun, Dominique Gautreau, K. Andre Mkhoyan, and Turan Birol Phys. Rev. Materials 6, 104608 (2022) – Published 21 October 2022   Calculated electron paramagnetic resonance g tensor and hyperfine parameters for zinc vacancy and N related defects in ZnO Klichchupong Dabsamut, Adisak Boonchun, and Walter R. L. Lambrecht Phys. Rev. Materials 6, 104609 (2022) – Published 28 October 2022   Other electronic materials Electronic and magnetic properties of intermetallic kagome magnets RV6Sn6(R=Tb−Tm) Xiaoxiao Zhang, Ziyi Liu, Qi Cui, Qi Guo, Ningning Wang, Lifen Shi, Hua Zhang, Weihua Wang, Xiaoli Dong, Jianping Sun, Zhiling Dun, and Jinguang Cheng Phys. Rev. Materials 6, 105001 (2022) – Published 10 October 2022   Featured in Physics Editors' Suggestion Electronegative metal dopants improve switching variability in Al2O3 resistive switching devices Zheng Jie Tan, Vrindaa Somjit, Cigdem Toparli, Bilge Yildiz, and Nicholas Fang Phys. Rev. Materials 6, 105002 (2022) – Published 19 October 2022 Synopsis:Impurities Enable High-Quality Resistive Switching Devices Resistive switching random access memories (RRAMs) promise to overcome the limitation of time- and energy-consumption set by increased training demand in the deep neural network. These devices enable the colocation of memory and processing by storing and utilizing information in the form of conductive networks, such as those made of oxygen vacancies. However, the inherent stochastic nature of atomic motion results in poor reliability and high switching variability in these devices, hindering their widespread use. In this paper, the authors propose a method to substantially reduce the switching variability of RRAM devices by doping the RRAM oxide electrolyte with electronegative metals. They find that electronegative metals reduce the oxygen vacancy formation energy, thereby pinning the conductive filament formation along fixed, predictable paths. This improved reliability enables multibit switching and can facilitate integration into large-scale hardware neural networks.     Relation between crystal structure and optical properties in the correlated blue pigment YIn1−xMnxO3 Valentin Ransmayr, Jan M. Tomczak, and Anna Galler Phys. Rev. Materials 6, 105003 (2022) – Published 28 October 2022   Metamaterials, optical, photonic, and plasmonic materials Emergent anisotropy and textures in two dimensional magnetic arrays Nanny Strandqvist, Björn Erik Skovdal, Merlin Pohlit, Henry Stopfel, Lisanne van Dijk, Vassilios Kapaklis, and Björgvin Hjörvarsson Phys. Rev. Materials 6, 105201 (2022) – Published 31 October 2022   Materials for energy harvesting, storage, and generation Electrochemical performance of KTiOAsO4 (KTA) in potassium-ion batteries from density-functional theory A. Bocchini, U. Gerstmann, T. Bartley, H.-G. Steinrück, G. Henkel, and W. G. Schmidt Phys. Rev. Materials 6, 105401 (2022) – Published 31 October 2022   Soft, molecular, and amorphous materials Featured in Physics Helical microstructures in molluscan biomineralization are a biological example of close packed helices that may form from a colloidal liquid crystal precursor in a twist–bend nematic phase Katarzyna Berent, Julyan H. E. Cartwright, Antonio G. Checa, Carlos Pimentel, Paula Ramos-Silva, and C. Ignacio Sainz-Díaz Phys. Rev. Materials 6, 105601 (2022) – Published 17 October 2022 Synopsis:The Gap-Free Helices of Sea Snails The shells of some mollusk species have compact helical structures that researchers propose develop from the self-assembly of a liquid-crystalline material.     Materials for catalysis and electrochemistry Transition metal atom adsorption on the titanium carbide MXene: Trends across the periodic table for the bare and O-terminated surfaces Henrique Rocha, José D. Gouveia, and José R. B. Gomes Phys. Rev. Materials 6, 105801 (2022) – Published 14 October 2022   Nanomaterials Dielectric effects, crystal field, and shape anisotropy tuning of the exciton fine structure of halide perovskite nanocrystals A. Ghribi, S. Ben Radhia, K. Boujdaria, L. Legrand, T. Barisien, M. Chamarro, and C. Testelin Phys. Rev. Materials 6, 106001 (2022) – Published 3 October 2022   Fragmentation of faceted crystalline wires Nan Wang and Alain Karma Phys. Rev. Materials 6, 106002 (2022) – Published 7 October 2022     American Physical Society: 1 Physics Ellipse, College Park, MD 20740 ©2022 American Physical Society | All rights reserved   You are receiving this email because you are subscribed to Table of Content alerts. If you no longer wish to receive these emails, please update your preferences.