Effect of density of state on isotope effect exponent of two-band superconductors

Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/15077

Title:	Effect of density of state on isotope effect exponent of two-band superconductors
Authors:	Udomsamuthirun P. Kumvongsa C. Burakorn A. Changkanarth P. Yoksan S.
Keywords:	Current density Electrons Phonons Density of state Isotope effect exponent Two-band superconductors Weak coupling Superconducting materials
Issue Date:	2005
Abstract:	The exact formula of Tc's equation and the isotope effect exponent of two-band s-wave superconductors in weak-coupling limit are derived by considering the influence of two kinds of density of state: constant and van Hove singularity. The paring interaction in each band consisted of two parts: the electron-phonon interaction and non-electron-phonon interaction are included in our model. We find that the interband interaction of electron-phonon show more effect on isotope exponent than the intraband interaction and the isotope effect exponent with constant density of state can fit to experimental data, MgB2 and high-Tc superconductor, better than van Hove singularity density of state. © 2005 Elsevier B.V. All rights reserved.
URI:	https://ir.swu.ac.th/jspui/handle/123456789/15077 https://www.scopus.com/inward/record.uri?eid=2-s2.0-24144433864&doi=10.1016%2fj.physc.2005.07.001&partnerID=40&md5=5f8d39b834037c45a2b9a8d3f207fa9c
ISSN:	9214534
Appears in Collections:	Scopus 1983-2021

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