Universal scaling of the Hall resistivity in MgB2 superconductors

Article

关键词: HGBA2CACU2O6+DELTA THIN-FILMS;    MIXED-STATE;    II SUPERCONDUCTORS;    COLUMNAR DEFECTS;    SIGN REVERSAL;    SINGLE-CRYSTALS;    VORTEX MOTION;    BEHAVIOR;    YBA2CU3O7-DELTA;    TEMPERATURE;   

DOI  :  10.1103/PhysRevB.65.184520

来源: SCIE

【 摘 要 】

The mixed-state Hall resistivity rho(xy) and the longitudinal resistivity rho(xx) in superconducting MgB2 thin films have been investigated as a function of the magnetic field over a wide range of current densities from 10(2) to 10(4) A/cm(2). We observe a universal Hall scaling behavior with a constant exponent beta of 2.0+/-0.1 in rho(xy)=Arho(xx)(beta), which is independent of the magnetic field, the temperature, and the current density. This result can be interpreted well within the context of recent theories.

【 授权许可】

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