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Author:

He, Keke (He, Keke.) | Bian, Mengying (Bian, Mengying.) | Seddon, Samuel D. (Seddon, Samuel D..) | Jagadish, Koushik (Jagadish, Koushik.) | Mucchietto, Andrea (Mucchietto, Andrea.) | Ren, He (Ren, He.) | Kirstein, Erik (Kirstein, Erik.) | Asadi, Reza (Asadi, Reza.) | Bai, Jaeil (Bai, Jaeil.) | Yao, Chao (Yao, Chao.) | Pan, Sheng (Pan, Sheng.) | Yu, Jie-Xiang (Yu, Jie-Xiang.) | Milde, Peter (Milde, Peter.) | Huai, Chang (Huai, Chang.) | Hui, Haolei (Hui, Haolei.) | Zang, Jiadong (Zang, Jiadong.) | Sabirianov, Renat (Sabirianov, Renat.) | Cheng, Xuemei M. (Cheng, Xuemei M..) | Miao, Guoxing (Miao, Guoxing.) | Xing, Hui (Xing, Hui.) | Shao, Yu-Tsun (Shao, Yu-Tsun.) | Crooker, Scott A. (Crooker, Scott A..) | Eng, Lukas (Eng, Lukas.) | Hou, Yanglong (Hou, Yanglong.) | Bird, Jonathan P. (Bird, Jonathan P..) | Zeng, Hao (Zeng, Hao.)

Indexed by:

EI Scopus SCIE

Abstract:

Covalent 2D magnets such as Cr2Te3, which feature self-intercalated magnetic cations located between monolayers of transition-metal dichalcogenide material, offer a unique platform for controlling magnetic order and spin texture, enabling new potential applications for spintronic devices. Here, it is demonstrated that the unconventional anomalous Hall effect (AHE) in Cr2Te3, characterized by additional humps and dips near the coercive field in AHE hysteresis, originates from an intrinsic mechanism dictated by the self-intercalation. This mechanism is distinctly different from previously proposed mechanisms such as topological Hall effect, or two-channel AHE arising from spatial inhomogeneities. Crucially, multiple Weyl-like nodes emerge in the electronic band structure due to strong spin-orbit coupling, whose positions relative to the Fermi level is sensitively modulated by the canting angles of the self-intercalated Cr cations. These nodes contribute strongly to the Berry curvature and AHE conductivity. This component competes with the contribution from bands that are less affected by the self-intercalation, resulting in a sign change in AHE with temperature and the emergence of additional humps and dips. The findings provide compelling evidence for the intrinsic origin of the unconventional AHE in Cr2Te3 and further establish self-intercalation as a control knob for engineering AHE in complex magnets.

Keyword:

anomalous Hall effect Berry curvature Cr2Te3 2D magnets intercalation

Author Community:

  • [ 1 ] [He, Keke]SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14226 USA
  • [ 2 ] [Bian, Mengying]SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14226 USA
  • [ 3 ] [Huai, Chang]SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14226 USA
  • [ 4 ] [Hui, Haolei]SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14226 USA
  • [ 5 ] [Zeng, Hao]SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14226 USA
  • [ 6 ] [He, Keke]SUNY Buffalo, Univ Buffalo, Dept Elect Engn, Buffalo, NY USA
  • [ 7 ] [Bird, Jonathan P.]SUNY Buffalo, Univ Buffalo, Dept Elect Engn, Buffalo, NY USA
  • [ 8 ] [Bian, Mengying]Peking Univ, Sch Mat Sci & Engn, Beijing 100871, Peoples R China
  • [ 9 ] [Hou, Yanglong]Peking Univ, Sch Mat Sci & Engn, Beijing 100871, Peoples R China
  • [ 10 ] [Bian, Mengying]Beijing Univ Technol, Coll Mat Sci, Beijing 100124, Peoples R China
  • [ 11 ] [Seddon, Samuel D.]Tech Univ Dresden, Inst Appl Phys, D-01062 Dresden, Germany
  • [ 12 ] [Milde, Peter]Tech Univ Dresden, Inst Appl Phys, D-01062 Dresden, Germany
  • [ 13 ] [Eng, Lukas]Tech Univ Dresden, Inst Appl Phys, D-01062 Dresden, Germany
  • [ 14 ] [Jagadish, Koushik]Univ Southern Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA
  • [ 15 ] [Shao, Yu-Tsun]Univ Southern Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA
  • [ 16 ] [Mucchietto, Andrea]Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
  • [ 17 ] [Kirstein, Erik]Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
  • [ 18 ] [Crooker, Scott A.]Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
  • [ 19 ] [Ren, He]Univ Waterloo, Dept Elect & Comp Engn, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
  • [ 20 ] [Asadi, Reza]Univ Waterloo, Dept Elect & Comp Engn, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
  • [ 21 ] [Miao, Guoxing]Univ Waterloo, Dept Elect & Comp Engn, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
  • [ 22 ] [Bai, Jaeil]Univ Nebraska, Dept Phys, Omaha, NE 68182 USA
  • [ 23 ] [Sabirianov, Renat]Univ Nebraska, Dept Phys, Omaha, NE 68182 USA
  • [ 24 ] [Yao, Chao]Shanghai Jiao Tong Univ, Sch Phys & Astron, Key Lab Artificial Struct & Quantum Control, Minist Educ, Shanghai, Peoples R China
  • [ 25 ] [Xing, Hui]Shanghai Jiao Tong Univ, Sch Phys & Astron, Key Lab Artificial Struct & Quantum Control, Minist Educ, Shanghai, Peoples R China
  • [ 26 ] [Pan, Sheng]Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
  • [ 27 ] [Yu, Jie-Xiang]Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
  • [ 28 ] [Zang, Jiadong]Univ New Hampshire, Dept Phys & Astron, Durham, NH 03824 USA
  • [ 29 ] [Cheng, Xuemei M.]Bryn Mawr Coll, Dept Phys, Bryn Mawr, PA 19010 USA
  • [ 30 ] [Hou, Yanglong]Sun Yat Sen Univ, Sch Mat, Shenzhen 518107, Peoples R China

Reprint Author's Address:

  • [Zeng, Hao]SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14226 USA;;[Hou, Yanglong]Peking Univ, Sch Mat Sci & Engn, Beijing 100871, Peoples R China;;[Miao, Guoxing]Univ Waterloo, Dept Elect & Comp Engn, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada;;[Hou, Yanglong]Sun Yat Sen Univ, Sch Mat, Shenzhen 518107, Peoples R China

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Source :

ADVANCED SCIENCE

Year: 2024

Issue: 2

Volume: 12

1 5 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 13

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