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摘要： Diodes providing the electric current rectification are fundamental for quantum logic. We propose a superconducting device based on electromagnetic field-induced transport in 2D superconducting thin films and monolayers at finite temperatures: a 2D superconducting photodiode. The field's frequency and polarization can control the Cooper pairs' current.
This research aligns with the recent study of the superconducting diode effect [1]. We propose the device, which (i) allows for optical control of the signal propagation in the system and (ii) is magnetic field-free, as opposed to the superconducting diode, where the magnetic field is necessary. This theory can be used for any 2D superconductors, including conventional and high-temperature superconductors. Absorption of a uniform electromagnetic field with a frequency larger than the superconducting gap is forbidden in pure superconductors. Finite absorption can occur only if electron scattering by impurities is considered. In recent works [2-4], the issue of absorption of radiation in isotropic superconductors with built-in superconducting currents was studied. We are constructing a theory of the nonlinear response of isotropic 2D superconductors in the presence of a built-in constant supercurrent at various frequencies and temperatures.
[1] K. Jiang and J. Hu, Nature Physics 18, 1145–1146 (2022).
[2] P.J.D. Crowley and L. Fu, Phys. Rev. B 106, 214526 (2022).
[3] M. Papaj and J.E. Moore, Phys. Rev. B 106, L220504 (2022).
[4] A.V. Parafilo, V. M. Kovalev, and I. G. Savenko, Phys. Rev. B 108, L180509 (2023).