Temperature-dependence of spin-polarized transport in ferromagnet / unconventional superconductor junctions
Abstract
Tunneling conductance in ferromagnet / unconventional superconductor junctions is studied theoretically as a function of temperatures and spin-polarization in feromagnets. In d-wave superconductor junctions, the existence of a zero-energy Andreev bound state drastically affects the temperature-dependence of the zero-bias conductance (ZBC). In p-wave triplet superconductor junctions, numerical results show a wide variety in temperature-dependence of the ZBC depending on the direction of the magnetic moment in ferromagnets and the pairing symmetry in superconductors such as , and -wave pair potential. The last one is a promising symmetry of SrRuO. From these characteristic features in the conductance, we may obtain the information about the degree of spin-polarization in ferromagnets and the direction of the -vector in triplet superconductors.
Keywords
Cite
@article{arxiv.cond-mat/0210693,
title = {Temperature-dependence of spin-polarized transport in ferromagnet / unconventional superconductor junctions},
author = {T. Hirai and Y. Tanaka and N. Yoshida and Y. Asano and J. Inoue and S. Kashiwaya},
journal= {arXiv preprint arXiv:cond-mat/0210693},
year = {2009}
}