Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet

Jia Xin Yin, Songtian S. Zhang, Hang Li, Kun Jiang, Guoqing Chang, Bingjing Zhang, Biao Lian, Cheng Xiang, Ilya Belopolski, Hao Zheng, Tyler A. Cochran, Su Yang Xu, Guang Bian, Kai Liu, Tay Rong Chang, Hsin Lin, Zhong Yi Lu, Ziqiang Wang, Shuang Jia, Wenhong WangM. Zahid Hasan

Research output: Contribution to journalLetter

24 Citations (Scopus)

Abstract

Owing to the unusual geometry of kagome lattices—lattices made of corner-sharing triangles—their electrons are useful for studying the physics of frustrated, correlated and topological quantum electronic states 1–9 . In the presence of strong spin–orbit coupling, the magnetic and electronic structures of kagome lattices are further entangled, which can lead to hitherto unknown spin–orbit phenomena. Here we use a combination of vector-magnetic-field capability and scanning tunnelling microscopy to elucidate the spin–orbit nature of the kagome ferromagnet Fe 3 Sn 2 and explore the associated exotic correlated phenomena. We discover that a many-body electronic state from the kagome lattice couples strongly to the vector field with three-dimensional anisotropy, exhibiting a magnetization-driven giant nematic (two-fold-symmetric) energy shift. Probing the fermionic quasi-particle interference reveals consistent spontaneous nematicity—a clear indication of electron correlation—and vector magnetization is capable of altering this state, thus controlling the many-body electronic symmetry. These spin-driven giant electronic responses go well beyond Zeeman physics and point to the realization of an underlying correlated magnetic topological phase. The tunability of this kagome magnet reveals a strong interplay between an externally applied field, electronic excitations and nematicity, providing new ways of controlling spin–orbit properties and exploring emergent phenomena in topological or quantum materials 10–12 .

Original languageEnglish
Pages (from-to)91-95
Number of pages5
JournalNature
Volume562
Issue number7725
DOIs
Publication statusPublished - 2018 Oct 4

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Magnets
Physics
Scanning Tunnelling Microscopy
Electrons
Anisotropy
Magnetic Fields

All Science Journal Classification (ASJC) codes

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Cite this

Yin, J. X., Zhang, S. S., Li, H., Jiang, K., Chang, G., Zhang, B., ... Hasan, M. Z. (2018). Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet. Nature, 562(7725), 91-95. https://doi.org/10.1038/s41586-018-0502-7
Yin, Jia Xin ; Zhang, Songtian S. ; Li, Hang ; Jiang, Kun ; Chang, Guoqing ; Zhang, Bingjing ; Lian, Biao ; Xiang, Cheng ; Belopolski, Ilya ; Zheng, Hao ; Cochran, Tyler A. ; Xu, Su Yang ; Bian, Guang ; Liu, Kai ; Chang, Tay Rong ; Lin, Hsin ; Lu, Zhong Yi ; Wang, Ziqiang ; Jia, Shuang ; Wang, Wenhong ; Hasan, M. Zahid. / Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet. In: Nature. 2018 ; Vol. 562, No. 7725. pp. 91-95.
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abstract = "Owing to the unusual geometry of kagome lattices—lattices made of corner-sharing triangles—their electrons are useful for studying the physics of frustrated, correlated and topological quantum electronic states 1–9 . In the presence of strong spin–orbit coupling, the magnetic and electronic structures of kagome lattices are further entangled, which can lead to hitherto unknown spin–orbit phenomena. Here we use a combination of vector-magnetic-field capability and scanning tunnelling microscopy to elucidate the spin–orbit nature of the kagome ferromagnet Fe 3 Sn 2 and explore the associated exotic correlated phenomena. We discover that a many-body electronic state from the kagome lattice couples strongly to the vector field with three-dimensional anisotropy, exhibiting a magnetization-driven giant nematic (two-fold-symmetric) energy shift. Probing the fermionic quasi-particle interference reveals consistent spontaneous nematicity—a clear indication of electron correlation—and vector magnetization is capable of altering this state, thus controlling the many-body electronic symmetry. These spin-driven giant electronic responses go well beyond Zeeman physics and point to the realization of an underlying correlated magnetic topological phase. The tunability of this kagome magnet reveals a strong interplay between an externally applied field, electronic excitations and nematicity, providing new ways of controlling spin–orbit properties and exploring emergent phenomena in topological or quantum materials 10–12 .",
author = "Yin, {Jia Xin} and Zhang, {Songtian S.} and Hang Li and Kun Jiang and Guoqing Chang and Bingjing Zhang and Biao Lian and Cheng Xiang and Ilya Belopolski and Hao Zheng and Cochran, {Tyler A.} and Xu, {Su Yang} and Guang Bian and Kai Liu and Chang, {Tay Rong} and Hsin Lin and Lu, {Zhong Yi} and Ziqiang Wang and Shuang Jia and Wenhong Wang and Hasan, {M. Zahid}",
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Yin, JX, Zhang, SS, Li, H, Jiang, K, Chang, G, Zhang, B, Lian, B, Xiang, C, Belopolski, I, Zheng, H, Cochran, TA, Xu, SY, Bian, G, Liu, K, Chang, TR, Lin, H, Lu, ZY, Wang, Z, Jia, S, Wang, W & Hasan, MZ 2018, 'Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet', Nature, vol. 562, no. 7725, pp. 91-95. https://doi.org/10.1038/s41586-018-0502-7

Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet. / Yin, Jia Xin; Zhang, Songtian S.; Li, Hang; Jiang, Kun; Chang, Guoqing; Zhang, Bingjing; Lian, Biao; Xiang, Cheng; Belopolski, Ilya; Zheng, Hao; Cochran, Tyler A.; Xu, Su Yang; Bian, Guang; Liu, Kai; Chang, Tay Rong; Lin, Hsin; Lu, Zhong Yi; Wang, Ziqiang; Jia, Shuang; Wang, Wenhong; Hasan, M. Zahid.

In: Nature, Vol. 562, No. 7725, 04.10.2018, p. 91-95.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet

AU - Yin, Jia Xin

AU - Zhang, Songtian S.

AU - Li, Hang

AU - Jiang, Kun

AU - Chang, Guoqing

AU - Zhang, Bingjing

AU - Lian, Biao

AU - Xiang, Cheng

AU - Belopolski, Ilya

AU - Zheng, Hao

AU - Cochran, Tyler A.

AU - Xu, Su Yang

AU - Bian, Guang

AU - Liu, Kai

AU - Chang, Tay Rong

AU - Lin, Hsin

AU - Lu, Zhong Yi

AU - Wang, Ziqiang

AU - Jia, Shuang

AU - Wang, Wenhong

AU - Hasan, M. Zahid

PY - 2018/10/4

Y1 - 2018/10/4

N2 - Owing to the unusual geometry of kagome lattices—lattices made of corner-sharing triangles—their electrons are useful for studying the physics of frustrated, correlated and topological quantum electronic states 1–9 . In the presence of strong spin–orbit coupling, the magnetic and electronic structures of kagome lattices are further entangled, which can lead to hitherto unknown spin–orbit phenomena. Here we use a combination of vector-magnetic-field capability and scanning tunnelling microscopy to elucidate the spin–orbit nature of the kagome ferromagnet Fe 3 Sn 2 and explore the associated exotic correlated phenomena. We discover that a many-body electronic state from the kagome lattice couples strongly to the vector field with three-dimensional anisotropy, exhibiting a magnetization-driven giant nematic (two-fold-symmetric) energy shift. Probing the fermionic quasi-particle interference reveals consistent spontaneous nematicity—a clear indication of electron correlation—and vector magnetization is capable of altering this state, thus controlling the many-body electronic symmetry. These spin-driven giant electronic responses go well beyond Zeeman physics and point to the realization of an underlying correlated magnetic topological phase. The tunability of this kagome magnet reveals a strong interplay between an externally applied field, electronic excitations and nematicity, providing new ways of controlling spin–orbit properties and exploring emergent phenomena in topological or quantum materials 10–12 .

AB - Owing to the unusual geometry of kagome lattices—lattices made of corner-sharing triangles—their electrons are useful for studying the physics of frustrated, correlated and topological quantum electronic states 1–9 . In the presence of strong spin–orbit coupling, the magnetic and electronic structures of kagome lattices are further entangled, which can lead to hitherto unknown spin–orbit phenomena. Here we use a combination of vector-magnetic-field capability and scanning tunnelling microscopy to elucidate the spin–orbit nature of the kagome ferromagnet Fe 3 Sn 2 and explore the associated exotic correlated phenomena. We discover that a many-body electronic state from the kagome lattice couples strongly to the vector field with three-dimensional anisotropy, exhibiting a magnetization-driven giant nematic (two-fold-symmetric) energy shift. Probing the fermionic quasi-particle interference reveals consistent spontaneous nematicity—a clear indication of electron correlation—and vector magnetization is capable of altering this state, thus controlling the many-body electronic symmetry. These spin-driven giant electronic responses go well beyond Zeeman physics and point to the realization of an underlying correlated magnetic topological phase. The tunability of this kagome magnet reveals a strong interplay between an externally applied field, electronic excitations and nematicity, providing new ways of controlling spin–orbit properties and exploring emergent phenomena in topological or quantum materials 10–12 .

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U2 - 10.1038/s41586-018-0502-7

DO - 10.1038/s41586-018-0502-7

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AN - SCOPUS:85054320004

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JO - Nature

JF - Nature

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