Anomalous Meissner Effect in a Normal-Metal--Superconductor Junction with a Spin-Active Interface

Anomalous Meissner Effect in a Normal-Metal–Superconductor Junction with a Spin-Active Interface

Takehito Yokoyama, Yukio Tanaka, and Naoto Nagaosa

Phys. Rev. Lett. 106, 246601 – Published 13 June 2011

Abstract

We investigate Meissner effect in normal-metal–superconductor junctions where the interface is spin active. We find that orbital magnetic susceptibility of the normal metal shows highly nontrivial behavior. In particular, the magnetic susceptibility depends on the temperature in an oscillatory fashion, accompanied by its sign change. Correspondingly, the magnetic field and current density can spatially oscillate in the normal metal. These results are attributed to the generation of odd-frequency pairing due to the spin-active interface.

Received 17 February 2011

DOI:https://doi.org/10.1103/PhysRevLett.106.246601

Authors & Affiliations

Takehito Yokoyama¹, Yukio Tanaka², and Naoto Nagaosa^3,4

¹Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
²Department of Applied Physics, Nagoya University, Nagoya, 464-8603, Japan
³Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
⁴Cross-Correlated Materials Research Group (CMRG) and Correlated Electron Research Group (CERG), ASI, RIKEN, WAKO 351-0198, Japan

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Issue

Vol. 106, Iss. 24 — 17 June 2011

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