Fluctuation Hall conductivity in superconducting films

Details Fluctuation Hall conductivity in superconducting films Fluctuation Hall conductivity in superconducting films

2010-10-22

arxiv.org/abs/1010.4636v1

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures

Scientific paper

We have studied the Hall effect in superconducting Tantalum Nitride (TaN_x) films. We find a large contribution to the Hall conductivity near the superconducting transition, which we can track to temperatures well above T_c and magnetic fields well above the upper critical field, H_c2(0). This contribution arises from Aslamazov-Larkin superconducting fluctuations, and we find quantitative agreement between our data and theoretical analysis based on time dependent Ginzburg-Landau theory.

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