Superconductivity induced by interfacial coupling to magnons
Journal article, Peer reviewed
Published version
Permanent lenke
http://hdl.handle.net/11250/2588296Utgivelsesdato
2018Metadata
Vis full innførselSamlinger
- Institutt for fysikk [2702]
- Publikasjoner fra CRIStin - NTNU [38576]
Sammendrag
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. We solve the gap equation numerically and estimate the critical temperature. In yttrium iron garnet (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.