paper

Superconductivity Induced by Interfacial Coupling to Magnons

arXiv:1707.03754 · doi:10.1103/PhysRevB.97.115401

Abstract

We consider a thin normal metal sandwiched between two ferromagnetic insulators. At the interfaces, the exchange coupling causes electrons within the metal to interact with magnons in the insulators. This electron-magnon interaction induces electron-electron interactions, which, in turn, can result in p-wave superconductivity. In the weak-coupling limit, we solve the gap equation numerically and estimate the critical temperature. In YIG-Au-YIG trilayers, superconductivity sets in at temperatures somewhere in the interval between 1 and 10 K. EuO-Au-EuO trilayers require a lower temperature, in the range from 0.01 to 1 K.

6 pages, 3 figures

References in corpus (3)

Cited by in corpus (31)