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Phase transitions associated with magnetic-field induced topological orbital momenta in a non-collinear antiferromagnet.
Deng, Sihao; Gomonay, Olena; Chen, Jie; Fischer, Gerda; He, Lunhua; Wang, Cong; Huang, Qingzhen; Shen, Feiran; Tan, Zhijian; Zhou, Rui; Hu, Ze; Smejkal, Libor; Sinova, Jairo; Wernsdorfer, Wolfgang; Sürgers, Christoph.
Afiliación
  • Deng S; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China. dengsh@ihep.ac.cn.
  • Gomonay O; Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe, 76049, Germany. dengsh@ihep.ac.cn.
  • Chen J; Spallation Neutron Source Science Center, Dongguan, 523803, China. dengsh@ihep.ac.cn.
  • Fischer G; Institut für Physik, Johannes Gutenberg Universität Mainz, 55128, Mainz, Germany.
  • He L; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
  • Wang C; Spallation Neutron Source Science Center, Dongguan, 523803, China.
  • Huang Q; Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe, 76049, Germany.
  • Shen F; Spallation Neutron Source Science Center, Dongguan, 523803, China. lhhe@iphy.ac.cn.
  • Tan Z; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. lhhe@iphy.ac.cn.
  • Zhou R; Songshan Lake Materials Laboratory, Dongguan, 523808, China. lhhe@iphy.ac.cn.
  • Hu Z; School of Integrated Circuit Science and Engineering, Beihang University, Beijing, 100191, China.
  • Smejkal L; NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
  • Sinova J; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
  • Wernsdorfer W; Spallation Neutron Source Science Center, Dongguan, 523803, China.
  • Sürgers C; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
Nat Commun ; 15(1): 822, 2024 Jan 27.
Article en En | MEDLINE | ID: mdl-38280875
ABSTRACT
Resistivity measurements are widely exploited to uncover electronic excitations and phase transitions in metallic solids. While single crystals are preferably studied to explore crystalline anisotropies, these usually cancel out in polycrystalline materials. Here we show that in polycrystalline Mn3Zn0.5Ge0.5N with non-collinear antiferromagnetic order, changes in the diagonal and, rather unexpected, off-diagonal components of the resistivity tensor occur at low temperatures indicating subtle transitions between magnetic phases of different symmetry. This is supported by neutron scattering and explained within a phenomenological model which suggests that the phase transitions in magnetic field are associated with field induced topological orbital momenta. The fact that we observe transitions between spin phases in a polycrystal, where effects of crystalline anisotropy are cancelled suggests that they are only controlled by exchange interactions. The observation of an off-diagonal resistivity extends the possibilities for realising antiferromagnetic spintronics with polycrystalline materials.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research / Risk_factors_studies Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research / Risk_factors_studies Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido