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@ARTICLE{Zhou:873883,
author = {Zhou, Xiaodong and Hanke, Jan-Philipp and Feng, Wanxiang
and Blügel, Stefan and Mokrousov, Yuriy and Yao, Yugui},
title = {{G}iant anomalous {N}ernst effect in noncollinear
antiferromagnetic {M}n-based antiperovskite nitrides},
journal = {Physical review materials},
volume = {4},
number = {2},
issn = {2475-9953},
address = {College Park, MD},
publisher = {APS},
reportid = {FZJ-2020-01073},
pages = {024408},
year = {2020},
abstract = {The anomalous Nernst effect (ANE)—the generation of a
transverse electric voltage by a longitudinal heat current
in conducting ferromagnets or antiferromagnets—is an
appealing approach for thermoelectric power generation in
spin caloritronics. The ANE in antiferromagnets is
particularly convenient for the fabrication of highly
efficient and densely integrated thermopiles as lateral
configurations of thermoelectric modules increase the
coverage of heat source without suffering from the stray
fields that are intrinsic to ferromagnets. In this work,
using first-principles calculations together with a group
theory analysis, we systematically investigate the
spin-order-dependent ANE in noncollinear antiferromagnetic
Mn-based antiperovskite nitrides Mn3XN(X=Ga, Zn, Ag, and
Ni). The ANE in Mn3XN is forbidden by symmetry in the R1
phase but amounts to its maximum value in the R3 phase.
Among all Mn3XN compounds, Mn3NiN presents the most
significant anomalous Nernst conductivity of 1.80AK−1m−1
at 200 K, which can be further enhanced if strain, electric,
or magnetic fields are applied. The ANE in Mn3NiN, being one
order of magnitude larger than that in the famous Mn3Sn, is
the largest one discovered in antiferromagnets so far. The
giant ANE in Mn3NiN originates from the sharp slope of the
anomalous Hall conductivity at the Fermi energy, which can
be understood well from the Mott relation. Our findings
provide a host material for realizing antiferromagnetic spin
caloritronics that promises exciting applications in energy
conversion and information processing.},
cin = {PGI-1 / IAS-1 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
pnm = {142 - Controlling Spin-Based Phenomena (POF3-142) / 143 -
Controlling Configuration-Based Phenomena (POF3-143) /
Topological transport in real materials from ab initio
$(jiff40_20190501)$},
pid = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143 /
$G:(DE-Juel1)jiff40_20190501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000513553500001},
doi = {10.1103/PhysRevMaterials.4.024408},
url = {https://juser.fz-juelich.de/record/873883},
}