Large Thermal Hall Effect in Spinel FeCr2S4

Xuebo Zhou; Wei Wu; Yu Sui; Yi feng Yang; Jianlin Luo

doi:10.1002/adfm.202304921

Large Thermal Hall Effect in Spinel FeCr₂S₄

Xuebo Zhou
, Wei Wu^*
, Yu Sui^*
, Yi feng Yang
, Jianlin Luo^*

^*Corresponding author for this work

School of Physics

CAS - Institute of Physics
School of Physics, Harbin Institute of Technology
University of Chinese Academy of Sciences
Songshan Lake Materials Laboratory

Research output: Contribution to journal › Article › peer-review

Abstract

The thermal Hall effect (THE) is an important experimental probe of band topology and elementary excitations. Here, a large thermal Hall angle (THA) κ_xy/κ_xx ≈ 7 × 10⁻³ discovered so far in ferrimagnetic spinel FeCr₂S₄ and a large thermal Hall conductivity (κ_xy) discovered first in spinel structure and reaching a magnitude of (Formula presented.) at 50 K with a small magnetic field of 0.1 T are reported. These results suggest the emergence of nontrivial topological excitations in FeCr₂S₄. A large THA in spin caloritronics devices means that a small number of excitations can produce a large transverse signal. FeCr₂S₄ is therefore a potential platform for spintronics-magnonics applications, and may enhance the knowledge of the thermal Hall effect.

Original language	English
Article number	2304921
Journal	Advanced Functional Materials
Volume	34
Issue number	16
DOIs	https://doi.org/10.1002/adfm.202304921
State	Published - 18 Apr 2024

Keywords

Berry curvature
magnon
thermal hall

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10.1002/adfm.202304921

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title = "Large Thermal Hall Effect in Spinel FeCr2S4",

abstract = "The thermal Hall effect (THE) is an important experimental probe of band topology and elementary excitations. Here, a large thermal Hall angle (THA) κxy/κxx ≈ 7 × 10−3 discovered so far in ferrimagnetic spinel FeCr2S4 and a large thermal Hall conductivity (κxy) discovered first in spinel structure and reaching a magnitude of (Formula presented.) at 50 K with a small magnetic field of 0.1 T are reported. These results suggest the emergence of nontrivial topological excitations in FeCr2S4. A large THA in spin caloritronics devices means that a small number of excitations can produce a large transverse signal. FeCr2S4 is therefore a potential platform for spintronics-magnonics applications, and may enhance the knowledge of the thermal Hall effect.",

keywords = "Berry curvature, magnon, thermal hall",

author = "Xuebo Zhou and Wei Wu and Yu Sui and Yang, \{Yi feng\} and Jianlin Luo",

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doi = "10.1002/adfm.202304921",

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TY - JOUR

T1 - Large Thermal Hall Effect in Spinel FeCr2S4

AU - Zhou, Xuebo

AU - Wu, Wei

AU - Sui, Yu

AU - Yang, Yi feng

AU - Luo, Jianlin

PY - 2024/4/18

Y1 - 2024/4/18

N2 - The thermal Hall effect (THE) is an important experimental probe of band topology and elementary excitations. Here, a large thermal Hall angle (THA) κxy/κxx ≈ 7 × 10−3 discovered so far in ferrimagnetic spinel FeCr2S4 and a large thermal Hall conductivity (κxy) discovered first in spinel structure and reaching a magnitude of (Formula presented.) at 50 K with a small magnetic field of 0.1 T are reported. These results suggest the emergence of nontrivial topological excitations in FeCr2S4. A large THA in spin caloritronics devices means that a small number of excitations can produce a large transverse signal. FeCr2S4 is therefore a potential platform for spintronics-magnonics applications, and may enhance the knowledge of the thermal Hall effect.

AB - The thermal Hall effect (THE) is an important experimental probe of band topology and elementary excitations. Here, a large thermal Hall angle (THA) κxy/κxx ≈ 7 × 10−3 discovered so far in ferrimagnetic spinel FeCr2S4 and a large thermal Hall conductivity (κxy) discovered first in spinel structure and reaching a magnitude of (Formula presented.) at 50 K with a small magnetic field of 0.1 T are reported. These results suggest the emergence of nontrivial topological excitations in FeCr2S4. A large THA in spin caloritronics devices means that a small number of excitations can produce a large transverse signal. FeCr2S4 is therefore a potential platform for spintronics-magnonics applications, and may enhance the knowledge of the thermal Hall effect.

KW - Berry curvature

KW - magnon

KW - thermal hall

UR - https://www.scopus.com/pages/publications/85181874227

U2 - 10.1002/adfm.202304921

DO - 10.1002/adfm.202304921

M3 - 文章

AN - SCOPUS:85181874227

SN - 1616-301X

VL - 34

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 16

M1 - 2304921

ER -

Large Thermal Hall Effect in Spinel FeCr₂S₄

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Keywords

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