TY - JOUR
T1 - DC spinmotive force from microwave-active resonant dynamics of a skyrmion crystal under a tilted magnetic field
AU - Koide, Tatsuya
AU - Takeuchi, Akihito
AU - Mochizuki, Masahito
N1 - Funding Information:
This work was partly supported by JSPS KAKENHI (Grants No. 17H02924, No. 16H06345, and No. 19H00864) and a Waseda University Grant for Special Research Projects (Project No. 2019C-253). We thank J. Ohe, M. Ikka, Y. Ohki, and Y. Shimada for useful discussions.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/7/3
Y1 - 2019/7/3
N2 - We theoretically show that a temporally oscillating spin-driven electromotive force or voltage with a large DC component can be generated by exciting microwave-active spin-wave modes of a skyrmion crystal confined in a quasi-two-dimensional magnet under a tilted magnetic field. The DC component and the AC amplitude of the oscillating electric voltage is significantly enhanced when the microwave frequency is tuned to an eigenfrequency of the peculiar spin-wave modes of the skyrmion crystal called "rotation modes" and the "breathing mode," whereas the sign of the DC component depends on the microwave polarization and on the spin-wave mode. These results provide an efficient means to convert microwaves to a DC electric voltage by using skyrmion-hosting magnets and to switch the sign of the voltage via tuning the microwave frequency, which are important capabilities for spintronic devices.
AB - We theoretically show that a temporally oscillating spin-driven electromotive force or voltage with a large DC component can be generated by exciting microwave-active spin-wave modes of a skyrmion crystal confined in a quasi-two-dimensional magnet under a tilted magnetic field. The DC component and the AC amplitude of the oscillating electric voltage is significantly enhanced when the microwave frequency is tuned to an eigenfrequency of the peculiar spin-wave modes of the skyrmion crystal called "rotation modes" and the "breathing mode," whereas the sign of the DC component depends on the microwave polarization and on the spin-wave mode. These results provide an efficient means to convert microwaves to a DC electric voltage by using skyrmion-hosting magnets and to switch the sign of the voltage via tuning the microwave frequency, which are important capabilities for spintronic devices.
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U2 - 10.1103/PhysRevB.100.014408
DO - 10.1103/PhysRevB.100.014408
M3 - Article
AN - SCOPUS:85073645176
VL - 100
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 1
M1 - 014408
ER -