| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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An Exotic Type of Fulde–Ferrel–Larkin–Ovchinnikov States in Spin-Orbit Coupled Condensates |
| HAN Qiang1,2,3**, LIU Jia2, ZHANG Dan-Bo1,2, WANG Zi-Dan2** |
1Department of Physics, Renmin University of China, Beijing 100872
2Department of Physics and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road Hong Kong
3Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872
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| Cite this article: |
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HAN Qiang, LIU Jia, ZHANG Dan-Bo et al 2014 Chin. Phys. Lett. 31 057401 |
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Abstract We find for the first time that a model Hamiltonian of s-wave superconductors in the presence of spin-orbit interactions and a Zeeman field is exactly solvable. Most intriguingly, based on the exact solutions, a novel type of Fulde–Ferrel–Larkin–Ovchinnikov ground state is rigorously revealed, in which the center-of-mass momentum of the fermion pair is proportional to the Zeeman field. We also generalize our exact analysis to the spin-orbit-coupled Bose–Einstein condensate.
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Published: 24 April 2014
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| PACS: |
74.90.+n
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(Other topics in superconductivity)
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74.20.Fg
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(BCS theory and its development)
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74.20.Rp
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(Pairing symmetries (other than s-wave))
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