2012年5月
Strong-coupling superconductivity with mixed even- and odd-frequency pairing
Physical Review B
- ,
- ,
- ,
- 巻
- 85
- 号
- 17
- 開始ページ
- 174528/1
- 終了ページ
- 11
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.85.174528
- 出版者・発行元
- AMER PHYSICAL SOC
We investigate the general structure of Landau free energy for stabilizing a novel superconducting state with both even-frequency and odd-frequency components in the gap function. On the basis of the Luttinger-Ward functional, we elucidate an emergent mixing between different "parities" in time. The simplest case of the conventional s-wave singlet mixed with the odd-frequency triplet state under broken time-reversal symmetry is examined to demonstrate the anomalous structure of the free-energy functional. The induced odd-frequency component alters behaviors of physical quantities from those obtained by neglecting the odd-frequency component. The novel mixed state may also be relevant to strong-coupling superconductivity coexisting with ferromagnetism.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevB.85.174528
- ISSN : 2469-9950
- eISSN : 2469-9969
- Web of Science ID : WOS:000304478700006