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cond-mat.mtrl-sci2020
Nonreciprocal thermal transport in a multiferroic helimagnet
Yuji Hirokane, Yoichi Nii, Hidetoshi Masuda +1
Breaking of spatial inversion symmetry (SIS) induces unique phenomena in condensed matter. Besides the classic examples such as natural optical activity and piezoelectricity, the s…
cond-mat.mtrl-sci2018
Microwave non-reciprocity of magnon excitations in a non-centrosymmetric antiferromagnet BaMnGeO
Y. Iguchi, Y. Nii, M. Kawano +3
We have investigated the microwave non-reciprocity for a non-centrosymmetric antiferromagnet BaMnGeO. The magnon modes expected by the conventional spin wave theory for…