Open AccessИнжекция неравновесного спина в геликоидальный ферромагнетик
Author(s) -
Е.А. Караштин
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.09.49773.05h
Subject(s) - helicoid , spin (aerodynamics) , spin hall effect , condensed matter physics , perpendicular , ferromagnetism , physics , current (fluid) , spin polarization , geometry , mathematics , electron , quantum mechanics , thermodynamics
The properties of spin injection into a helicoidal ferromagnet are studied. Two possible ways of spin injection are investigated: injection of spin-polarized electric current and effect of spin pumping. In the case when helicoid axis is perpendicular to the boundary through which the spin is injected the conditions of spin injection into a pre-defined spin band are determined. In the case when helicoid axis is parallel to the boundary the appearance of effect similar to topological Hall effect is shown. In the latter geometry, spin pumping leads to the exchange conversion of spin current into electric current that flows parallel to the helicoid axis.