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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 95Development of Density Functional Theory for...

Development of Density Functional Theory for Plasmon-Assisted Superconductivity

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Abstract:

A new scheme of density functional theory (DFT) for unconventional superconductivity is reviewed.To include the effect of charge fluctuations such as low-energy plasmons or excitons, we extendthe conventional formalism of superconducting DFT where the dynamical structure of the screened Coulomb interaction is neglected.We applied the present method to fcc Li under high pressure. We show that the agreement between thetheory and experiment is considerably improved. The present result indicates that plasmons cancooperate with phonons and enhance the pairing instability.

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Periodical:

Advances in Science and Technology (Volume 95)

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186-195

DOI:

https://doi.org/10.4028/www.scientific.net/AST.95.186

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Online since:

October 2014

Authors:

Ryotaro Arita*, Ryosuke Akashi

Keywords:

Plasmon-Assisted Superconductivity, Superconducting Density Functional Theory (SCDFT), Unconventional Pairing Mechanism

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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