Low Temperature Physics: 40, 17 (2014); https://doi.org/10.1063/1.4862467
Fizika Nizkikh Temperatur: Volume 40, Number 1 (January 2014), p. 22-47    ( to contents , go back )

Spintronics of antiferromagnetic systems

H.V. Gomonay and V.M. Loktev

National Technical University of Ukraine “KPI”, 37 Peremogy Ave., Kyiv 03056, Ukraine
E-mail: helen.gomonay@gmail.com

Bogolyubov Institute for Theoretical Physics National Academy of Sciences of Ukraine 14-b Metrologichna Str., Kyiv 03680, Ukraine

Received August 22, 2013

Abstract

Spintronics of antiferromagnetics is a new field that has developed in a fascinating research topic in physics of magnetism. Antiferromagnetics, like ferromagnetic materials experience the influence of spin-polarized current, even though they show no macroscopic magnetization. The mechanism of this phenomenon is related to spin-dependent interaction between free and localized electrons–sd-exchange. Due to the peculiarities of antiferromagnetic materials (complicated magnetic structure, essential role of the exchange interactions, lack of macroscopic magnetization) spintronics of antiferromagnets appeals to new theoretical and experimental approaches. The purpose of this review is to systemize and summarize the recent progress in this field. We start with a short introduction into the structure and dynamics of antiferromagnets and proceed with discussion of different microscopic and phenomenological theories for description of currernt-induced phenomena in ferro-/antiferromagnetic heterostructures. We also consider the problems of the reverse influence of antiferromagnetic ordering on current, and effectiveness of the fully antiferromagnetic spin valve. In addition, we shortly review and interpret the available experimental results.

PACS: 75.76.+j Spin transport effects;
PACS: 75.50.Ee Antiferromagnetics;
PACS: 75.78.–n Magnetization dynamics;
PACS: 75.78.Fg Dynamics of domain structures.

Key words: antiferromagnetic, magnetization dynamics, spin-polarized current, spin-dependendent interaction.

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