Photogalvanic phenomena in superconductors supporting intrinsic diode effect

S. V. Mironov; A. S. Mel'nikov; A. I. Buzdin

doi:10.1103/PhysRevB.109.L220503

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Photogalvanic phenomena in superconductors supporting intrinsic diode effect

S. V. Mironov, A. S. Mel'nikov, A. I. Buzdin

DOI 10.1103/PhysRevB.109.L220503 · Physical Review B

T1

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Abstract

In this Letter we suggest a phenomenological theory of photogalvanic phenomena in superconducting materials and structures revealing the diode effect. Starting from a generalized London model including the quadratic nonlinearity in the relation between the supercurrent and superfluid velocity, we show that the electromagnetic wave incident on the superconductor can generate a nontrivial superconducting phase difference between the ends of the sample. Being enclosed in a superconducting loop, such a phase battery should generate a dc supercurrent circulating in the loop. By increasing the electromagnetic wave intensity one can provoke the switching between the loop states with different vorticities.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb/V/Ta Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown