Zero-bias conductance peak split in d-wave superconductors: Derivation of the universal magnetic field dependence

Details Zero-bias conductance peak split in d-wave superconductors: Derivation of the universal magnetic field dependence Zero-bias conductance peak split in d-wave superconductors: Derivation of the universal magnetic field dependence

2009-04-22

arxiv.org/abs/0904.3532v1

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures

Scientific paper

The zero-bias conductance peak in d-wave superconductors splits in an applied magnetic field. In this work, the experimentally observed universal relation delta ~ B0^(1/2) for strip-shaped samples is derived analytically based on the long-ranged current contributions from Abrikosov vortices inside the sample. The result is in full agreement with observed key properties, and features such as hysteresis effects are made accessible. Employing a magnetically induced additional order parameter is not necessary for the physical explanation of the universal relation.

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