Details

Autor(en) / Beteiligte

• Zhang, Jianbing
• Shen, Shengchun
• Puggioni, Danilo
• Wang, Meng
• Sha, Haozhi
• Xu, Xueli
• Lyu, Yingjie
• Peng, Huining
• Xing, Wandong
• Walters, Lauren N
• Liu, Linhan
• Wang, Yujia
• Hou, De
• Xi, Chuanying
• Pi, Li
• Ishizuka, Hiroaki
• Kotani, Yoshinori
• Kimata, Motoi
• Nojiri, Hiroyuki
• Nakamura, Tetsuya
• Liang, Tian
• Yi, Di
• Nan, Tianxiang
• Zang, Jiadong
• Sheng, Zhigao
• He, Qing
• Zhou, Shuyun
• Nagaosa, Naoto
• Nan, Ce-Wen
• Tokura, Yoshinori
• Yu, Rong
• Rondinelli, James M
• Yu, Pu

Titel

A correlated ferromagnetic polar metal by design

Ist Teil von

• Nature materials, 2024-04

Ort / Verlag

England

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Nature Journals

Beschreibungen/Notizen

• Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca Co O . This material crystallizes with alternating stacking of oxygen tetrahedral CoO monolayers and octahedral CoO bilayers. The ferromagnetic metallic state is confined within the quasi-two-dimensional CoO layers, and the broken inversion symmetry arises simultaneously from the Co displacements. The breaking of both spatial-inversion and time-reversal symmetries, along with their strong coupling, gives rise to an intrinsic magnetochiral anisotropy with exotic magnetic field-free non-reciprocal electrical resistivity. An extraordinarily robust topological Hall effect persists over a broad temperature-magnetic field phase space, arising from dipole-induced Rashba spin-orbit coupling. Our work not only provides a rich platform to explore the coupling between polarity and magnetism in a metallic system, with extensive potential applications, but also defines a novel design strategy to access exotic correlated electronic states.