TY - JOUR
T1 - Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet
T2 - Decoupled Spin-Charge Excitations and Nonreciprocity
AU - Eto, Rintaro
AU - Pohle, Rico
AU - Mochizuki, Masahito
N1 - Funding Information:
R. E. and R. P. thank Yutaka Akagi for fruitful discussions. R. E. also thanks Shinji Watanabe for fruitful discussions. This work was supported by JSPS KAKENHI (Grants No. 20H00337, No. 19H00864, and No. 16H06345) and JST CREST (Grant No. JPMJCR20T1). R. P. is supported by MEXT “Program for Promoting Researches on the Supercomputer Fugaku” (Grant No. JPMXP1020200104) and JSPS KAKENHI “Quantum Liquid Crystals” (Grant No. JP19H05825). Numerical calculations were carried out at the Supercomputer Center in Institute for Solid State Physics, University of Tokyo.
Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/7/1
Y1 - 2022/7/1
N2 - We theoretically study spin and charge excitations of skyrmion crystals stabilized by conduction-electron-mediated magnetic interactions via spin-charge coupling in a centrosymmetric Kondo-lattice model by large-scale spin-dynamics simulations combined with the kernel polynomial method. We reveal clear segregation of spin and charge excitation channels and nonreciprocal nature of the spin excitations governed by the Fermi-surface geometry, which are unique to the skyrmion crystals in centrosymmetric itinerant hosts and can be a source of novel physical phenomena.
AB - We theoretically study spin and charge excitations of skyrmion crystals stabilized by conduction-electron-mediated magnetic interactions via spin-charge coupling in a centrosymmetric Kondo-lattice model by large-scale spin-dynamics simulations combined with the kernel polynomial method. We reveal clear segregation of spin and charge excitation channels and nonreciprocal nature of the spin excitations governed by the Fermi-surface geometry, which are unique to the skyrmion crystals in centrosymmetric itinerant hosts and can be a source of novel physical phenomena.
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U2 - 10.1103/PhysRevLett.129.017201
DO - 10.1103/PhysRevLett.129.017201
M3 - Article
C2 - 35841562
AN - SCOPUS:85134432224
SN - 0031-9007
VL - 129
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
M1 - 017201
ER -