Photon drag of superconducting fluctuations in two-dimensional systems

Abstract

The theory of photon drag of superconducting fluctuations in two-dimensional electron gas is developed. It is shown that the frequency dependence of the induced current is qualitatively similar to the case of photon drag of conventional two-dimensional degenerate electron gas. With decreasing temperature the magnitude of the effect increases dramatically and the current of superconducting fluctuations carries an additional power of reduced temperature in comparison with the Aslamazov-Larkin contribution. The developed effect is expected to be sufficient to be visible against the conventional photocurrent background.