Multiple coexisting orientations of flux lines in superconductors with uniaxial anisotropy
A. Sudbø, E. H. Brandt, D. A. Huse
DOI 10.1103/PhysRevLett.71.1451 · Physical Review Letters
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Abstract
The self-energy and Gibbs free energy of rigid vortex lines are calculated for a uniaxially anisotropic London superconductor with a magnetic field applied at an angle φ from the c^ axis. When the correct elliptical core cutoff is used, the Gibbs free energy may have degenerate double minima as a function of vortex orientation. This indicates the coexistence of flux lines with different orientations at fields just above Hc1, applied at an angle φ≠0 from the c^ axis. The regime of parameters H, φ, Mz/M, and κ where this occurs is mapped out.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2.2Sr2Ca0.8Cu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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