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Spontaneous appearance of nonzero-momentum Cooper pairing : possible application to the iron-pnictides
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Spontaneous appearance of nonzero-momentum Cooper ...
Bibliographic description
| title: | Spontaneous appearance of nonzero-momentum Cooper pairing : possible application to the iron-pnictides |
| author: | Zegrodnik Michał, Spałek Józef 
|
| Journal title: | Physical Review. B, Condensed Matter and Materials Physics |
| volume: | 90 |
| issue: | 17 |
| date of publication: | 2014 |
| article ID: | 174507 |
| ISSN: |
1098-0121 |
| eISSN: |
1550-235X 1538-4489 |
| DOI: | |
| language: | English |
| Journal language: | English |
| abstract in english: | We suggest that an inhomogeneous (nonzero-momentum) paired phase can appear in the absence of an external magnetic field in a system with a predominant interband pairing and with separate Fermi-surface sheets. The Fermi wave vector mismatch which appears in such a situation can be compensated by nonzero center-of-mass momentum of the Cooper pairs, which can lead to a spontaneous appearance of the Fulde-Ferrell type of superconducting state. The idea is examined using a tight-binding model which emulates the holelike and the electronlike bands of iron-based superconductors. The state can appear for the cases of both spin-singlet and spin-triplet pairing channels. |
| number of pulisher's sheets: | 0,5 |
| affiliation: | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego |
| type: | journal article |
| subtype: | academic paper |
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