Temperature dependence of angular momentum transport across interfaces

Kai Chen, Weiwei Lin, C. L. Chien, Shufeng Zhang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Angular momentum transport in magnetic multilayered structures plays a central role in spintronic physics and devices. The angular momentum currents or spin currents are carried by either quasiparticles such as electrons and magnons, or by macroscopic order parameters such as local magnetization of ferromagnets. Based on the generic interface exchange interaction, we develop a microscopic theory that describes interfacial spin conductance for various interfaces among nonmagnetic metals, ferromagnetic insulators, and antiferromagnetic insulators. Spin conductance and its temperature dependence are obtained for different spin batteries including spin pumping, temperature gradient, and spin Hall effect. As an application of our theory, we calculate the spin current in a trilayer made of a ferromagnetic insulator, an antiferromagnetic insulator, and a nonmagnetic heavy metal. The calculated results on the temperature dependence of spin conductance quantitatively agree with the existing experiments.

Original languageEnglish (US)
Article number054413
JournalPhysical Review B
Volume94
Issue number5
DOIs
StatePublished - Aug 11 2016

Fingerprint

Angular momentum
Spin Hall effect
angular momentum
Magnetoelectronics
temperature dependence
Ferromagnetic materials
Magnetic structure
Exchange interactions
Heavy Metals
Thermal gradients
Heavy metals
Magnetization
Physics
insulators
Temperature
Electrons
Experiments
heavy metals
magnons
Hall effect

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Temperature dependence of angular momentum transport across interfaces. / Chen, Kai; Lin, Weiwei; Chien, C. L.; Zhang, Shufeng.

In: Physical Review B, Vol. 94, No. 5, 054413, 11.08.2016.

Research output: Contribution to journalArticle

Chen, Kai ; Lin, Weiwei ; Chien, C. L. ; Zhang, Shufeng. / Temperature dependence of angular momentum transport across interfaces. In: Physical Review B. 2016 ; Vol. 94, No. 5.
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