Temperature dependence of spin-polarized transport in ferromagnet/unconventional superconductor junctions
Tunneling conductance in ferromagnet/unconventional superconductor junctions is studied
theoretically as a function of temperature and spin polarization in ferromagnets. In d-wave
superconductor junctions, a zero-energy Andreev bound state drastically affects the
temperature dependence of the zero-bias conductance (ZBC). In p-wave superconductor
junctions, numerical results show various temperature dependences of the ZBC depending
on the direction of the magnetic moment in ferromagnets and the pairing symmetry in …
theoretically as a function of temperature and spin polarization in ferromagnets. In d-wave
superconductor junctions, a zero-energy Andreev bound state drastically affects the
temperature dependence of the zero-bias conductance (ZBC). In p-wave superconductor
junctions, numerical results show various temperature dependences of the ZBC depending
on the direction of the magnetic moment in ferromagnets and the pairing symmetry in …
Abstract
Tunneling conductance in ferromagnet/unconventional superconductor junctions is studied theoretically as a function of temperature and spin polarization in ferromagnets. In d-wave superconductor junctions, a zero-energy Andreev bound state drastically affects the temperature dependence of the zero-bias conductance (ZBC). In p-wave superconductor junctions, numerical results show various temperature dependences of the ZBC depending on the direction of the magnetic moment in ferromagnets and the pairing symmetry in superconductors such as p x−, p y−, and p x+ i p y-wave symmetries. The last one is a candidate for the pairing symmetry of Sr 2 RuO 4. From these characteristic features in the conductance, we may obtain information about the degree of spin polarization in ferromagnets and the direction of the d vector in spin-triplet superconductors.
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