Spin current at a magnetic junction as a probe of the Kondo state

T. Yamamoto; T. Kato; M. Matsuo

doi:10.1103/PhysRevB.104.L121401

Letter

Spin current at a magnetic junction as a probe of the Kondo state

T. Yamamoto ¹, T. Kato ¹, and M. Matsuo ^2,3,4,5

¹Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
²Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
³CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China
⁴Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
⁵RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan

PDF

Phys. Rev. B 104, L121401 – Published 7 September, 2021

DOI: https://doi.org/10.1103/PhysRevB.104.L121401

Abstract

We investigate the spin Seebeck effect and spin pumping in a junction between a ferromagnetic insulator and a magnetic impurity deposited on a normal metal. By performing a numerical renormalization group calculation, we show that spin current is enhanced by the Kondo effect. This spin current is suppressed by an increase in temperature or a magnetic field comparable to the Kondo temperature. Our results indicate that spin transport can be a direct probe of spin excitation in strongly correlated systems.

Physical Review B

Export citation

Export citation

Spin current at a magnetic junction as a probe of the Kondo state

Abstract

Physics Subject Headings (PhySH)

Authorization Required

Other Options

References (Subscription Required)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

Spin current at a magnetic junction as a probe of the Kondo state

Abstract

Physics Subject Headings (PhySH)

Authorization Required

Log in via your institution

Log in via APS Member Subscription

Other Options

References (Subscription Required)