Multiband model for tunneling in MgB2 junctions -: art. no. 180517

被引：295
作者：
Brinkman, A
Golubov, AA
Rogalla, H
Dolgov, OV
Kortus, J
Kong, Y
Jepsen, O
Andersen, OK
机构：
[1] Univ Twente, Dept Appl Phys, NL-7500 AE Enschede, Netherlands
[2] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands
[3] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
来源：
PHYSICAL REVIEW B | 2002年 / 65卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.65.180517
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A theoretical model for quasiparticle and Josephson tunneling in multiband superconductors is developed and applied to MgB2-based junctions. The gap functions in different bands in MgB2 are obtained from an extended Eliashberg formalism, using the results of band structure calculations. The temperature and angle dependencies of MgB2 tunneling spectra and the Josephson critical current are calculated. The conditions for observing one or two gaps are given. We argue that the model may help to settle the current debate concerning two-band superconductivity in MgB2.
引用
收藏
页码：1805171 / 1805174
页数：4
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