Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1819085 | Physica C: Superconductivity and its Applications | 2008 | 4 Pages |
Abstract
Proximity effects and finite-quasiparticle-lifetime effects in normal metal/ferromagnetic semiconductor/superconductor (NM/FS/SC) junctions are studied based on an extended Blonder–Tinkham–Klapwijk (BTK) theory. It is shown that the dependence of the conductance spectra on the exchange energy in FS and the thickness of FS for the heavy holes is much different from that for the light holes due to the different mismatches in the effective mass and Fermi velocity between FS and SC. The finite quasiparticle lifetime can induce a broadened normalized conductance and a reduced superconducting gap and lead to a smearing of the dips in the conductance arising from the proximity-effect induced superconductivity in FS interlayer.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Hong Li, Xinjian Yang, Chaozhuo Liu, Peng Zhong,