【摘 要】
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We present the results of point-contact spectroscopy measurements on high-quality epitaxial MgB2 thin films with injected current along the c-axis. The temperat
【机 构】
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National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condense
论文部分内容阅读
We present the results of point-contact spectroscopy measurements on high-quality epitaxial MgB2 thin films with injected current along the c-axis. The temperature and field dependences of л-band properties with the field parallel to (H‖) or perpendicular to (H┴ ) the c-axis are investigated in detail. When a magnetic field is applied, either parallel or perpendicular to the c-axis, the density of the quasiparticle state (DOS) of the л-band proliferates quickly with increasing field, while the gap amplitude of the л-band decreases slowly, which is different from the recent theoretical calculations, showing a field dependent competition between the interband scattering and the pair-breaking effects.
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