On the puzzle of odd-frequency superconductivity

Hiroaki Kusunose, Yuki Fuseya, Kazumasa Miyake

研究成果: Article査読

44 被引用数 (Scopus)

抄録

Since the first theoretical proposal by Berezinskii, an odd-frequency superconductivity has encountered the fundamental problems on its thermodynamic stability and rigidity of a homogenous state accompanied by unphysical Meissner effect. Recently, Solenov et al. [Phys. Rev. B 79 (2009) 132502] have asserted that the path-integral formulation gets rid of the difficulties leading to a stable homogenous phase with an ordinary Meissner effect. Here, we show that it is crucial to choose the appropriate saddle-point solution that minimizes the effective free energy, which was assumed implicitly in the work by Solenov and co-workers. We exhibit the path-integral framework for the odd-frequency superconductivity with general type of pairings, including an argument on the retarded functions via the analytic continuation to the real axis.

本文言語English
論文番号054702
ジャーナルJournal of the Physical Society of Japan
80
5
DOI
出版ステータスPublished - 5 2011

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