TY - JOUR
T1 - Microwave magnetochiral effect in the non-centrosymmetric magnet CuB2O4
AU - Nii, Yoichi
AU - Sasaki, Ryo
AU - Iguchi, Yusuke
AU - Onose, Yoshinori
N1 - Funding Information:
This work was partly supported by Grants-in-Aid for Young Scientists B (No. 15K21622) and for Scientific Research (A) and (B) (Nos. 25247058 and 16H04008), the Murata Science Foundation, and Yamada Science Foundation. Y.I. is supported by a Grants-in-Aid for JSPS Fellows (No. 16J10076).
Publisher Copyright:
©2017 The Physical Society of Japan.
PY - 2017
Y1 - 2017
N2 - We have investigated microwave nonreciprocity in the non-centrosymmetric magnet CuB2O4. We simultaneously observed nonreciprocities with different origins: the classical magnetic dipolar nonreciprocity and the magnetochiral (MCh) nonreciprocity. By rotating a magnetic field in a tetragonal plane, we clearly unveiled a qualitative difference between them. The MCh signal reveals chiral transitions from one enantiomer to the other via an intermediate achiral state. We showed that the magnetoelectric effect plays an essential role in the emergence of the microwave MCh effect. Our demonstration may give a new insight into the classical dipolar-type and emergent spin-orbit-type microwave nonreciprocities in media with broken time-reversal symmetry and spatial inversion symmetry.
AB - We have investigated microwave nonreciprocity in the non-centrosymmetric magnet CuB2O4. We simultaneously observed nonreciprocities with different origins: the classical magnetic dipolar nonreciprocity and the magnetochiral (MCh) nonreciprocity. By rotating a magnetic field in a tetragonal plane, we clearly unveiled a qualitative difference between them. The MCh signal reveals chiral transitions from one enantiomer to the other via an intermediate achiral state. We showed that the magnetoelectric effect plays an essential role in the emergence of the microwave MCh effect. Our demonstration may give a new insight into the classical dipolar-type and emergent spin-orbit-type microwave nonreciprocities in media with broken time-reversal symmetry and spatial inversion symmetry.
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U2 - 10.7566/JPSJ.86.024707
DO - 10.7566/JPSJ.86.024707
M3 - Article
AN - SCOPUS:85014732898
SN - 0031-9015
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 2
M1 - 024707
ER -