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arXiv · 2305.04219

Surface supercurrent diode effect

Noah F. Q. Yuan
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Abstract

We propose a new type of supercurrent diode effect on the surface of a superconductor with surface states under in-plane magnetic fields. Surface supercurrent diode effect can lead to a perfect supercurrent diode in a considerably wide range of fields. For comparison, the conventional supercurrent diode effect due to the spin-orbit coupling in a two-dimensional superconductor cannot be perfect in usual cases. Candidates such as the (001) surface of iron-based superconductors BaFe$_{2-x}$Co$_x$As$_2$ are discussed. Calculations are performed under the Ginzburg-Landau formalism.

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Noah F. Q. Yuan. 2023-05-07. Surface supercurrent diode effect. https://arxiv.org/abs/2305.04219

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