Influence of spin-orbit and spin-Hall effects on the spin-Seebeck current beyond linear response: A Fokker-Planck approach

被引：11

作者：

Chotorlishvili, L. ^{[1
]}

Toklikishvili, Z. ^{[2
]}

Wang, X-G ^{[3
]}

Dugaev, V. K. ^{[4
]}

Barnas, J. ^{[5
,6
]}

Berakdarl, J. ^{[1
]}

机构：

[1] Martin Luther Univ Halle Wittenberg, Inst Phys, D-06120 Halle An Der Saale, Germany

[2] Tbilisi State Univ, Fac Exact & Nat Sci, Chavchavadze Ave 3, GE-30128 Tbilisi, Georgia

[3] Cent South Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China

[4] Rzeszow Univ Technol, Dept Phys & Med Engn, PL-35959 Rzeszow, Poland

[5] Adam Mickiewicz Univ, Fac Phys, Ulica Umultowska 85, PL-61614 Poznan, Poland

[6] Polish Acad Sci, Inst Mol Phys, Ulica M Smoluchowskiego 17, PL-60179 Poznan, Poland

来源：

PHYSICAL REVIEW B | 2019年 / 99卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevB.99.024410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the spin transport theoretically in heterostructures consisting of a ferromagnetic metallic thin film sandwiched between heavy-metal and oxide layers. The spin current in the heavy-metal layer is generated via the spin Hall effect, whereas the oxide layer induces at the interface with the ferromagnetic layer a spin-orbital coupling of the Rashba type. Impact of the spin-Hall effect and Rashba spin-orbit coupling on the spin-Seebeck current is explored with a particular emphasis on nonlinear effects. Technically, we employ the Fokker-Planck approach and contrast the analytical expressions with full numerical micromagnetic simulations. We show that, when an external magnetic field H o is aligned parallel (antiparallel) to the Rashba field, the spin-orbit coupling enhances (reduces) the spin pumping current. In turn, the spin-Hall effect and the Dzyaloshinskii-Moriya interaction are shown to increase the spin pumping current.

引用

页数：9

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