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Superconducting properties of MgB2 from first principles

Authors: A. Floris, G. Profeta, N.N. Lathiotakis, M. Lueders, M.A.L. Marques, C. Franchini, E.K.U. Gross, A. Continenza, and S. Massidda

Ref.: Phys. Rev. Lett. 94, 37004 (2005)

Abstract: Solid MgB2 has rather interesting and technologically important properties, such as a very high superconducting transition temperature. Focusing on this compound, we report the first non-trivial application of a novel density-functional-type theory for superconductors, recently proposed by the authors. Without invoking any adjustable parameters, we obtain the transition temperature, the gaps, and the specific heat of MgB2 in very good agreement with experiment. Moreover, our calculations show how the Coulomb interaction acts differently on s and p states, thereby stabilizing the observed superconducting phase.

Citations: 123 (Google scholar)

DOI: 10.1103/PhysRevLett.94.037004

URL: arxiv.org

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Bibtex:

@article{Floris_2005,
	doi = {10.1103/physrevlett.94.037004},
	url = {https://doi.org/10.1103%2Fphysrevlett.94.037004},
	year = 2005,
	month = {jan},
	publisher = {American Physical Society ({APS})},
	volume = {94},
	number = {3},
	author = {A. Floris and G. Profeta and N. {\hspace{0.167em}}N. Lathiotakis and M. Lüders and M. {\hspace{0.167em}}A. {\hspace{0.167em}}L. Marques and C. Franchini and E. {\hspace{0.167em}}K. {\hspace{0.167em}}U. Gross and A. Continenza and S. Massidda},
	title = {Superconducting Properties {ofMgB}2from First Principles},
	journal = {Physical Review Letters}
}