Density Functional Theory for Plasmon-Assisted Superconductivity

• DOI: 10.7566/jpsj.83.061016
• Publication Date: 2014-05-09T06:03:50Z
• Authors: Ryosuke Akashi; Ryotaro Arita
• Keywords: Formalism (music)

We review the recent progress in density functional theory for superconductors (SCDFT). Motivated by long-studied plasmon mechanism of superconductivity, we have constructed an exchange-correlation kernel entering SCDFT gap equation which includes effect. For case lithium under high pressures, show that effect substantially enhances transition temperature (Tc) cooperating with conventional phonon and results a better agreement between theoretical experimentally observed Tc. Our present formalism will be first step to unconventional superconductors.