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@ARTICLE{Yang:1008217,
author = {Yang, Kunya and Wu, Hong and Li, Zefang and Ran, Chen and
Wang, Xiao and Zhu, Fengfeng and Gong, Xiangnan and Liu, Yan
and Wang, Guiwen and Zhang, Long and Mi, Xinrun and Wang,
Aifeng and Chai, Yisheng and Su, Yixi and Wang, Wenhong and
He, Mingquan and Yang, Xiaolong and Zhou, Xiaoyuan},
title = {{S}pin‐{P}honon {S}cattering‐{I}nduced {L}ow {T}hermal
{C}onductivity in a van der {W}aals {L}ayered {F}erromagnet
{C}r$_2${S}i$_2${T}e$_6$},
journal = {Advanced functional materials},
volume = {33},
number = {37},
issn = {1616-301X},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2023-02257},
pages = {2302191},
year = {2023},
abstract = {Layered van der Waals (vdW) magnets are prominent
playgrounds for developing magnetoelectric, magneto-optic,
and spintronic devices. In spintronics, particularly in
spincaloritronic applications, low thermal conductivity (κ)
is highly desired. Herein, by combining thermal transport
measurements with density functional theory calculations,
this study demonstrates low κ down to 1 W m−1 K−1 in a
typical vdW ferromagnet Cr2Si2Te6. In the paramagnetic
state, development of magnetic fluctuations way above Tc =
33 K strongly reduces κ via spin-phonon scattering, leading
to low κ ≈ 1 W m−1 K−1 over a wide temperature range,
in comparable to that of amorphous silica. In the
magnetically ordered state, emergence of resonant
magnon-phonon scattering limits κ below ≈2 W m−1 K−1,
which will be three times larger if magnetic scatterings are
absent. Application of magnetic fields strongly suppresses
the spin-phonon scattering, giving rise to large
enhancements of κ. This study's calculations well capture
these complex behaviors of κ by taking the temperature- and
magnetic-field-dependent spin-phonon scattering into
account. Realization of low κ, which is easily tunable by
magnetic fields in Cr2Si2Te6, may further promote
spincaloritronic applications of vdW magnets. This study's
theoretical approach may also provide a generic
understanding of spin-phonon scattering, which appears to
play important roles in various systems.},
cin = {JCNS-FRM-II / MLZ / JCNS-2 / JCNS-4 / PGI-4 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-Juel1)PGI-4-20110106 / $I:(DE-82)080009_20140620$},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000998877100001},
doi = {10.1002/adfm.202302191},
url = {https://juser.fz-juelich.de/record/1008217},
}