12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Magnon-assisted Andreev transport across ferrom...
View graph of relations

« Back

Magnon-assisted Andreev transport across ferromagnet-superconductor junctions

Research output: Contribution to journalJournal article

Published

Journal publication date01/2002
JournalPhysica E: Low-dimensional Systems and Nanostructures
Journal number1-4
Volume12
Number of pages4
Pages938-941
Original languageEnglish

Abstract

We study subgap transport due to Andreev reflection in a ferromagnet-superconductor junction at low temperature. The mismatch of spin polarized current in the ferromagnet and spinless current in the Superconductor results in an additional contact resistance which can be reduced by magnon emission in the ferromagnet. We find that magnon-assisted Andreev reflection produces a non-linear contribution to the asymmetric part of the conductance, G(V)-G(-V), which is related to the density of states of magnons in the ferromagnet.