Conductance spectroscopy in ferromanget/superconductor hybrids
Abstract
We present theoretical model for the proximity effect in F-SFF-F structures (F is ferromagnet, S is superconductor) with non-collinear magnetizations vectors in the F-layers and with arbitrary magnitudes of exchange fields. Electrical conductance of these structures is analyzed within the Keldysh-Usadel formalism in the diffusive regime as a function of a misorientation angle between magnetizations of the F-layers and transparencies of SF and FF interfaces. We show that long-range triplet superconducting correlations manifest themselves either as a zero-bias peak in the case of perfect transparency of FF interface, or as a two-peak structure in the case of finite transparency. The predicted features may serve as a diagnostic tool for characterization of interfaces in superconducting hybrid structures
Cite
@article{arxiv.1401.3732,
title = {Conductance spectroscopy in ferromanget/superconductor hybrids},
author = {T. Yu. Karminskaya and M. Yu. Kupriyanov and S. L. Prischepa and A. A. Golubov},
journal= {arXiv preprint arXiv:1401.3732},
year = {2014}
}
Comments
7 pages, 7 figures, submitted to SUST