| Issue |
EPL
Volume 130, Number 1, April 2020
|
|
|---|---|---|
| Article Number | 17008 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/130/17008 | |
| Published online | 01 May 2020 | |
Electric field effect on spin waves: Role of magnetic moment current
Istituto Nazionale di Ricerca Metrologica - Strada delle Cacce 91, 10135 Torino, Italy
Received: 7 November 2019
Accepted: 17 April 2020
We show that a static electric field Ex gives rise to a shift of the spin wave dispersion relation 
in the direction of the wave number qy of the quantity 
. This effect is caused by the magnetic moment current carried by the spin wave itself which generates an additional phase proportional to the electric field, as in the Aharonov-Casher effect. This effect is independent of the possibly present magneto-electric effects of insulating ferromagnets and superimposes to them.
PACS: 75.30.Ds – Spin waves / 75.78.-n – Magnetization dynamics / 85.75.-d – Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields
© EPLA, 2020
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