Role of interference in MM-wave driven DC transport in two dimensional electron gas
Dung-Hai Lee, Jon Magne Leinaas
Abstract
In this paper we point out that in addition to the density of states effect proposed in Ref.durst,anderson one should consider the effect of constructive interference between the multi-MM-wave-photon processes shown in Fig.2. This process enhances the dark value of the conductivity. When the sample is very pure, i.e., when the transport life time is very long, this interference effect quickly diminishes as the MM-wave frequency deviates from the cyclotron frequency. In this paper we also present the linear response theory in the presence of strong harmonic time-dependent perturbation.
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