2018/11/20 by Yuki Shiomi, Y. Shiomi, H. Watanabe +6 · 1 citation
Materials Science · Mathematics · Physics and Astronomy · #Algorithm #Antiferromagnetism #Computer science #Condensed matter physics #Geometry #Homogeneous space #Magnetic and transport properties of perovskites and related materials #Materials science #Mathematics #Metal #Multiferroics and related materials #Physics #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.122.127207
published as Phys. Rev. Lett. 122, 127207 (2019)
arxiv created 2018/11/20 · openalex created_date 2018/11/29 · openalex publication_date 2019/03/29 · arxiv updated 2019/04/03 · openalex updated_date 2026/08/06
We have experimentally studied a magnetopiezoelectric effect predicted recently for magnetic metals with low crystal symmetries. In EuMnBi2 with antiferromagnetic Mn moments at 77 K, dynamic displacements emerge along the a direction upon application of ac electric fields in the c direction and increase in proportion to the applied electric fields. Such displacements are not observed along the c direction of EuMnBi2 or EuZnBi2 with nonmagnetic Zn ions. As temperature increases from 77 K, the displacement signals decrease and disappear at about 200 K, above which electric conduction changes from coherent to incoherent. These results demonstrate the emergence of the magnetopiezoelectric effect in a magnetic metal lacking inversion and time-reversal symmetries.