Static and dynamical anisotropy effects in the mixed state of d-wave superconductors

Article

关键词: GINZBURG-LANDAU THEORY;    HIGH-TEMPERATURE SUPERCONDUCTORS;    SCANNING-TUNNELING-MICROSCOPE;    II SUPERCONDUCTORS;    VORTEX LINE;    ELECTRONIC-STRUCTURE;    PAIRING STATE;    YBA2CU3O7;    SYMMETRY;    VORTICES;   

DOI  :  10.1103/PhysRevB.57.7955

来源: SCIE

【 摘 要 】

We describe the effects of anisotropy caused by the crystal lattice in d-wave superconductors using an effective foe-energy approach in which only one order parameter, the d-wave order-parameter field, is used. The Abrikosov parameter beta(A) is calculated analytically for both static and moving vortex lattices. The analytic expression provides an unambiguous determination of the vortex-lattice structure. We also calculate both direct and Hall I-V curves as functions of the angle between the current and the crystal-lattice orientation. In particular, we show that near H-c2 the fourfold symmetry of the crystal lattice causes asymmetric motions of particles and holes, resulting in a nonvanishing Hall current.

【 授权许可】

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