Spin-wave spintronics

Electric field control of magnons in magnetic thin films: ab initio predictions for 2D metallic heterostructures

“…The calculations presented in Sec. III reveal that certain features of magnon spectra can be controlled by an applied electric field, beside aspects already considered in the literature as a consequence of voltage-controlled magneto-crystalline anisotropy [10,11], multiferroic coupling [12,13], induced effective DMI [14][15][16][17][18][19][20], or strain from a piezoelectric substrate [62]. In particular, we see that a finite E field perturbation may lead to sizable changes in the magnon lifetime, even in a case for which the adiabatic dispersion ω(q) is fairly unaffected (compare Fig.…”

“…An early example has been the measurement of proportionality between magnetic resonance shifts and an applied electric field in lithium ferrite [10]. This observation has been explained as a consequence of a voltage-controlled magneto-crystalline anisotropy (VCMA) variation, and deemed small for practical applications [11]. Subsequently, multiferroic materials have been found to offer a stronger response in their magnon spectrum through the coupling between their intrinsic electric polarization and the externally applied perturbation [12,13].…”