Piezomagnetic effect as a counterpart of negative thermal expansion in magnetically frustrated Mn-based antiperovskite nitrides
Jan Zemen, Zsolt Gercsi, Karl G. Sandeman
备注：
8 pages, 4 figures, 2nd version: updated references, updated introduction, new results added to Fig. 3, original Fig. 3b moved to manuscript arXiv:1609.03515, corrected typos
Electric-field control of magnetization promises to substantially enhance the energy efficiency of device applications ranging from data storage to solid-state cooling. However, the intrinsic linear magnetoelectric effect is typically small in bulk materials. In thin films electric-field tuning of spin-orbit interaction phenomena (e.g., magnetocrystalline anisotropy) has been reported to achieve a partial control of the magnetic state. Here we explore the piezomagnetic effect (PME), driven by frustrated exchange interactions, which can induce a net magnetization in an antiferromagnet and reverse its direction via elastic strain generated piezoelectrically. Our $ab~initio$ study of PME in Mn-antiperovskite nitrides identified an extraordinarily large PME in Mn$_3$SnN available at room temperature. We explain the magnitude of PME based on features of the electronic structure and show an inverse-proportionality between the simulated zero-temperature PME and the negative thermal expansion at the magnetic (Néel) transition measured by Takenaka et al. in 9 antiferromagnetic Mn$_3$AN systems.
Theoretical Insights into Inorganic Antiperovskite Nitrides (X$_3$NA; X = Mg, Sr, Ca, Ba; A = Sb, As): An Emerging Class of Materials for Photovoltaics
Comparative first-principles study of antiperovskite oxides and nitrides as thermoelectric material: multiple Dirac cones, low-dimensional band dispersion, and high valley degeneracy
Tunable negative thermal expansion related with the gradual evolution of antiferromagnetic ordering in antiperovskite manganese nitrides Ag1-xNMn3+x (0<x<0.6)
Unusual strain relaxation and Dirac semimetallic behavior in epitaxial antiperovskite nitrides
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；Northwest University（西北大学）；Southern University of Science and Technology（南方科技大学）
Disentangling magnetic and optical contributions in ultrafast dynamics of antiperovskite non-collinear antiferromagnets
Charles University（查理大学）；University of Cambridge（剑桥大学）；University of Glasgow（格拉斯哥大学）；Czech Technical University（捷克理工大学）；LoMaRe Technologies Ltd.（洛玛雷科技有限公司）；Jiangsu LoMaRe Chip Technology Co., Ltd.（江苏洛玛雷芯片技术有限公司）
Ferrimagnetic Order in Tetragonal Antiperovskite Mn$_3$GeN
National Renewable Energy Laboratory（国家可再生能源实验室）；Colorado State University（科罗拉多州立大学）；University of Maryland（马里兰大学）；Oak Ridge National Laboratory（橡树岭国家实验室）
Ultrafast control of spin order by linearly polarized light in noncollinear antiferromagnetic metals
Charles University（查理大学）；Institute of Physics ASCR（捷克科学院物理研究所）；Czech Technical University（捷克理工大学）；University of Cambridge（剑桥大学）；University of Glasgow（格拉斯哥大学）；LoMaRe Technologies Ltd.（洛马雷科技有限公司）；LoMaRe Chip Technology Changzhou Co., Ltd.（洛马雷芯片技术常州有限公司）；Imperial College London（帝国理工学院）
