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Antivortices due to competing orbital and paramagnetic pair-breaking effects | U.Klein
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25 Feb 2005 | Subject: | Superconductivity | cond-mat.supr-con | Abstract: | Thermodynamically stable vortex-antivortex structures in a quasi-two-dimensional superconductor in a tilted magnetic field are predicted. For this geometry, both orbital and spin pair-breaking effects exist, with their relative strength depending on the tilt angle Theta. The spectrum of possible states contains as limits the ordinary vortex state (for large Theta) and the Fulde-Ferrell-Larkin-Ovchinnikov state (for Theta=0). The quasiclassical equations are solved near H_{c2} for arbitrary Theta and it is shown that stable states with coexisting vortices and antivortices exist in a small interval close to Theta=0. The results are compared with recent predictions of antivortices in mesoscopic samples. | Source: | arXiv, cond-mat/0502604 | Services: | Forum | Review | PDF | Favorites |
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