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Spontaneous appearance of the spin-triplet Fulde-Ferrell-Larkin-Ovchinnikov phase in a two-band model : possible application to LaFeAsO_{1-x}F_{x}
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Spontaneous appearance of the spin-triplet ...
Bibliographic description
| title: | Spontaneous appearance of the spin-triplet Fulde-Ferrell-Larkin-Ovchinnikov phase in a two-band model : possible application to LaFeAsO_{1-x}F_{x} |
| author: | Zegrodnik Michał, Spałek Józef 
|
| Journal title: | Journal of Superconductivity and Novel Magnetism |
| volume: | 28 |
| issue: | 3 |
| date of publication: | 2015 |
| pages: | 1155-1160 |
| ISSN: |
1557-1939 |
| eISSN: |
1557-1947 |
| DOI: | |
| language: | English |
| Journal language: | English |
| abstract in english: | The possibility of a spontaneous spin-triplet paired phase of the Fulde-Ferrell-Larkin-Ovchinnikov type is studied. As it is shown in a system with the dominant interband pairing and two distinct Fermi surface sheets, the Fermi wave-vector mismatch can be compensated by a nonzero center-of-mass momentum of the Cooper pairs. This idea is examined with the use of a model which describes the two hole-like bands in the iron-based superconductor. It is shown that for the proper range of model parameters, the minima of the free energy appear which correspond to a nonzero Cooper pair momentum. Different superconducting gap symmetries are analyzed, and the corresponding phase diagrams are shown. |
| keywords in english: | unconventional superconductivity, FFLO phase, iron pnictides |
| affiliation: | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego |
| type: | journal article |
| subtype: | academic paper |
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