Vortex state of a d-wave superconductor in high-Tc cuprates

Hyekyung Won; Kazumi Maki

doi:10.1103/PhysRevB.53.5927

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Vortex state of a d-wave superconductor in high-Tc cuprates

Hyekyung Won, Kazumi Maki

DOI 10.1103/PhysRevB.53.5927 · Physical Review B

T1

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Abstract

We study theoretically the vortex state of a d-wave superconductor in a magnetic field parallel to the c axis. We find, except in the immediate vicinity of the superconducting transition temperature, that a square lattice tilted by π/4 from the a axis gives the most stable configuration, which provides the simplest interpretation of a recent small angle neutron scattering experiment by Keimer et al. and a more recent scanning tunnel microscope experiment by Maggio-Aprile et al. The residual density of states is shown to follow a √B law in a wide field region consistent with an earlier prediction by Volovik. The effect of d-s mixture is also studied. The most important effect appears to be a suppression of the upper critical field at low temperatures by 5–10 %. © 1996 The American Physical Society.

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
Bi2212 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown