Vortex lattice structure in a d-wave superconductor with orthorhombic distortion
Qiang Han, Liyuan Zhang
DOI 10.1103/PhysRevB.59.11579 · Physical Review B
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Abstract
The vortex lattice structure in an orthorhombic d-wave superconductor under a magnetic field parallel to the c axis is studied near the upper critical field using the phenomenological D2h symmetric Ginzburg-Landau free-energy density. The equilibrium vortex lattices are commonly body-centered rectangular lattice with no rotation relative to the underlying crystal. At certain temperature which depends on the parameters describing the a−b anisotropy, the flux lattice undergoes a second-order phase transition with the direction of the elongation of the rectangular lattice rotated by 90° (e.g., from the b-axis direction to the a-axis direction). The phase transition temperature is estimated within two microscopic models.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| ErNi2B2C 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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