Density functional theory for freezing transition of vortex-line liquid with periodic layer pinning

Details Density functional theory for freezing transition of vortex-line liquid with periodic layer pinning Density functional theory for freezing transition of vortex-line liquid with periodic layer pinning

2004-06-08

arxiv.org/abs/cond-mat/0406180v2

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures, references added

Scientific paper

10.1103/PhysRevB.72.174503

By the density functional theory for crystallization, it is shown that for vortex lines in an underlying layered structure a smectic phase with period m=2 can be stabilized by strong layer pinning. The freezing of vortex liquid is then two-step, a second-order liquid-smectic transition and a first-order smectic-lattice transition. DFT also indicates that a direct, first-order liquid-lattice transition preempts the smectic order with m>2 irrespectively of the pinning strength. Possible H-T phase diagrams are mapped out. Implications of the DFT results to the interlayer Josephson vortex system in high-Tc cuprates are given.

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