In-plane Hall effect in c-axis-oriented MgB2 thin films

Details In-plane Hall effect in c-axis-oriented MgB2 thin films In-plane Hall effect in c-axis-oriented MgB2 thin films

2001-05-02

arxiv.org/abs/cond-mat/0105024v2

Phys. Rev. B65, 134508 (2002).

Physics

Condensed Matter

Superconductivity

5 pages including 5 figures

Scientific paper

10.1103/PhysRevB.65.134508

We have measured the longitudinal resistivity and the Hall resistivity in the ab-plane of highly c-axis-oriented MgB2 thin films. In the normal state, the Hall coefficient (R_H) behaves as R_H ~ T with increasing temperature (T) up to 130 K and then deviates from that linear T-dependence at higher temperatures. The T^2 dependence of the cotangent of the Hall angle is only observed above 130 K. The mixed-state Hall effect reveals no sign anomaly over a wide range of current densities from 10^2 to 10^4 A/cm^2 and for magnetic fields up to 5 T.

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