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arXiv · 2606.28977

Synchronic scattering and geometric dephasing in microwave-induced resistance oscillations

Jesus Iñarrea
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Abstract

We present a novel quantum transport model for microwave-induced resistance oscillations (MIRO) where we prove that the instantaneous scattering rate is directly modulated by the velocity of the driven coherent state. This interaction peaks exactly at $\omega t = 2n\pi$, where the wave packets sweep through the impurity landscape at maximum speed, breaking time-reversal symmetry to generate a net direct current. Additionally, we introduce a dephasing architecture to explain amplitude saturation: a non-linear geometric dephasing ($\exp(-A/R_c)$) triggered when the displacement amplitude $A$ of the oscillating coherent state, approaches the cyclotron radius $R_{c}$. This perfectly captures the linear-to-sublinear power crossover at high intensities, offering a fully coherent description of non-equilibrium transport.

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Jesus Iñarrea. 2026-06-27. Synchronic scattering and geometric dephasing in microwave-induced resistance oscillations. https://arxiv.org/abs/2606.28977

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