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@ARTICLE{Zhou:1021990,
author = {Zhou, Xiaodong and Feng, Wanxiang and Zhang, Run-Wu and
Šmejkal, Libor and Sinova, Jairo and Mokrousov, Yuriy and
Yao, Yugui},
title = {{C}rystal {T}hermal {T}ransport in {A}ltermagnetic {R}u{O}
2},
journal = {Physical review letters},
volume = {132},
number = {5},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2024-01129},
pages = {056701},
year = {2024},
note = {Joint Sino-German Research Projects (Chinese Grant No.
12061131002 and German Research Foundation, DFG, Grant No.
44880005), the Sino-German Mobility Programme (Grant No.
M-0142) and DFG-TRR 288- 422213477 and DFG-TRR
173/2-268565370.},
abstract = {We demonstrate the emergence of a pronounced thermal
transport in the recently discovered class of magnetic
materials—altermagnets. From symmetry arguments and
first-principles calculations performed for the showcase
altermagnet, RuO2, we uncover that crystal Nernst and
crystal thermal Hall effects in this material are very large
and strongly anisotropic with respect to the N ́eel vector.
We find the large crystal thermal transport to originate
from three sources of Berry’s curvature in momentum space:
the Weyl fermions due to crossings between well-separated
bands, the strong spin-flip pseudonodal surfaces, and the
weak spin- flip ladder transitions, defined by transitions
among very weakly spin-split states of similar dispersion
crossing the Fermi surface. Moreover, we reveal that the
anomalous thermal and electrical transport coefficients in
RuO2 are linked by an extended Wiedemann-Franz law in a
temperature range much wider than expected for conventional
magnets. Our results suggest that altermagnets may assume a
leading role inrealizing concepts in spin caloritronics not
achievable with ferromagnets or antiferromagnets},
cin = {PGI-1 / IAS-1},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406},
pnm = {5211 - Topological Matter (POF4-521) / DFG project
444844585 - Statische und dynamische Kopplung von Gitter-
und elektronischen Freiheitsgraden in magnetisch geordneten
Übergangsmetalldichalkogenieden (B06) (444844585) / DFG
project 437337265 - Spin+Optik: Theoretischer Entwurf von
antiferromagnetischer Optospintronik (A11) (437337265)},
pid = {G:(DE-HGF)POF4-5211 / G:(GEPRIS)444844585 /
G:(GEPRIS)437337265},
typ = {PUB:(DE-HGF)16},
pubmed = {38364129},
UT = {WOS:001262232800001},
doi = {10.1103/PhysRevLett.132.056701},
url = {https://juser.fz-juelich.de/record/1021990},
}