Online Spintronics Seminar #40: Dmytro Bozhko скачать в хорошем качестве

Online Spintronics Seminar #40: Dmytro Bozhko

Unconventional Spin Currents in Magnetic Films This online seminar was given on September 8, 2020, by Dr. Dmytro Bozhko of the University of Colorado at Colorado Springs. Please refer to https://www.spintalks.org for more information about the Online Spintronics Seminar Series. A spin current – a flow of spin angular momentum – can be carried either by spin polarized free electrons or by magnons, the quanta of spin waves. Traditionally, it was assumed, that a spin wave in a free magnetic film can transfer energy and angular momentum only along its propagation direction. In this talk, using the data obtained by Brillouin light scattering spectroscopy in combination with an extended theory of dipole-exchange spin-wave spectra, I will show that in obliquely magnetized magnetic films the in-plane propagation of spin waves is accompanied by a transverse spin current without corresponding transverse transport of energy [1]. [1] D. A. Bozhko, H. Yu. Musiienko-Shmarova, V. S. Tiberkevich, A. N. Slavin, I. I. Syvorotka, B. Hillebrands, and A. A. Serga, Phys. Rev. Research 2, 023324 (2020).