Abstract
We study a possible sine-wave like superconducting state à la Fulde-Ferrell and Larkin-Ovchinikov (FFLO) for parameters appropriate for a high-T c cuprates YBCO and find this novel state is realizable forT≤0.4T c and in a magnetic field in the a−b plane in excess of 200 Tesla. The upper critical fieldH c2 (θ,t) depends on θ, the angle B makes from the a axis and the reduced temperaturet. In FFLO state a)H c2 (θ,t) increases almost linearly with t in decreasing temperature, b)H c2 (θ,t) andH c2 (π/4,t) cross each other aroundt=0.1.
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H. Won acknowledges the support in part from Ministry of Education through BSRI program and in part from the Ministry of Science and Technology. The present work is in part supported by NSF under grant number DMR92-18371
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Maki, K., Won, H. The sine-wave like d-wave superconductivity in high magnetic fields. Czech J Phys 46 (Suppl 2), 1035–1036 (1996). https://doi.org/10.1007/BF02583825
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DOI: https://doi.org/10.1007/BF02583825