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Search for Magnetic Field Induced Gap in a High-Tc Superconductor

G. Mihaly·A. Halbritter·L. Mihaly·L. Forro
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Abstract

Break junctions made of the optimally doped high temperature superconductor Bi2Sr2Ca2CuO8 with Tc of 90 K has been investigated in magnetic fields up to 12 T, at temperatures from 4.2 K to Tc. The junction resistance varied between 1kOhm and 300kOhm. The differential conductance at low biases did not exhibit a significant magnetic field dependence, indicating that a magnetic-field-induced gap (Krishana et al., Science 277 83 (1997)), if exists, must be smaller than 0.25 meV.

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G. Mihaly, A. Halbritter, L. Mihaly, L. Forro. 2000-02-24. Search for Magnetic Field Induced Gap in a High-Tc Superconductor. https://doi.org/10.1016/s0038-1098(00)00306-9

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