Four-Fold Anisotropy of the Parallel Upper Critical Magnetic Field in a Pure Layered d-Wave Superconductor at T = 0
Abstract
It is well known that a four-fold symmetry of the parallel upper critical magnetic field disappears in the Ginzburg-Landau (GL) region in quasi-two-dimensional (Q2D) d-wave superconductors. Therefore, it has been accurately calculated so far as a correction to the GL results, which is valid close to superconducting transition temperature and is expected to be stronger at low temperatures. As to the case T = 0, some approximated methods have been used, which are good only for closed electron orbits and inappropriate for the open orbits that exist in a parallel magnetic field in Q2D superconductors. For the first time, we accurately calculate the four-fold anisotropy of the parallel upper critical magnetic field in a pure Q2D d-wave superconductor at T = 0, where it has the highest possible value. Our results are applicable to Q2D d-wave high-Tc and organic superconductors.
- Publication:
-
Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- April 2020
- DOI:
- 10.1134/S0021364020040037
- arXiv:
- arXiv:2007.03061
- Bibcode:
- 2020JETPL.111..239L
- Keywords:
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- Condensed Matter - Superconductivity
- E-Print:
- 5 pages, 2 figeres