Role of bulk-magnon transport in the temporal evolution of the longitudinal spin-Seebeck effect

被引：68

作者：

Agrawal, M. ^{[1
,2
,3
]}

Vasyuchka, V. I. ^{[1
,2
]}

Serga, A. A. ^{[1
,2
]}

Kirihara, A. ^{[1
,2
,4
]}

Pirro, P. ^{[1
,2
]}

Langner, T. ^{[1
,2
]}

Jungfleisch, M. B. ^{[1
,2
]}

Chumak, A. V. ^{[1
,2
]}

Papaioannou, E. Th. ^{[1
,2
]}

Hillebrands, B. ^{[1
,2
]}

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

[2] Tech Univ Kaiserslautern, Landesforschungszentrum OPTIMAS, D-67663 Kaiserslautern, Germany

[3] Grad Sch Mat Sci Mainz, D-67663 Kaiserslautern, Germany

[4] NEC Corp Ltd, Smart Energy Res Labs, Tsukuba, Ibaraki 3058501, Japan

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 22期

关键词：

CALORITRONICS; TEMPERATURE;

D O I：

10.1103/PhysRevB.89.224414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the temporal evolution of the longitudinal spin Seebeck effect in a YIG vertical bar Pt bilayer system. Our findings reveal that this effect is a submicrosecond fast phenomenon governed by the thermal-magnon diffusion along the thermal gradient inside the magnetic material. A comparison of experimental results with the thermal-driven magnon-diffusion model demonstrates that the temporal behavior of this effect depends on the time development of the temperature gradient in the magnetic material close to the interface. The effective thermal-magnon diffusion length for the YIG vertical bar Pt system is estimated to be around 500 nm.

引用

页数：5

共 34 条

[1] Linear-response theory of spin Seebeck effect in ferromagnetic insulators [J].