✦ LIBER ✦

Temperature dependence of the optical conductivity and penetration depth in superconductor MgB2 film

✍ Scribed by M. Moarrefi; H. Yavari; M. Elahi

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 339 KB
Volume: 405
Category: Article
ISSN: 0921-4526
DOI: 10.1016/j.physb.2009.08.070

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✦ Synopsis

By using Green's function method the temperature dependence of the optical conductivity and penetration depth of high-quality MgB 2 film are calculated in the framework of the two-band model. We compare our results with experimental data and we argue that the single gap model is insufficient to describe the optical and penetration depth behavior, but the two-band model with different symmetries describes the data rather well. In the two gap model we consider that the both components of optical conductivity are a weighted sum of the contribution from s and p bonds and hybridization between them is negligible.

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