Ginzburg-Landau theory for a p-wave Sr2RuO4 superconductor: Vortex core structure and extended London theory
R. Heeb, D. F. Agterberg
DOI 10.1103/PhysRevB.59.7076 · Physical Review B
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Abstract
Based on a two-dimensional odd-parity superconducting order parameter for Sr2RuO4 with p-wave symmetry, we investigate the single vortex and vortex lattice structure of the mixed phase near Hc1. Ginzburg-Landau calculations for a single vortex show a fourfold structure with an orientation depending on the microscopic Fermi surface properties. The corresponding extended London theory is developed to determine the vortex lattice structure and we find near Hc1 a centered rectangular vortex lattice. As the field is increased from Hc1 this lattice continuously deforms until a square vortex lattice is achieved. In the centered rectangular phase the field distribution, as measurable through μSR experiments, exhibits a characteristic two peak structure (similar to that predicted in high temperature and borocarbide superconductors).
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.93 | Pressure not reported | zero_resistance |
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