Dynamic charge oscillations occur in generic quantum conductors with sublinear large-bias DC current under ultrashort voltage pulses, extending perturbatively to strongly correlated regimes.
Orthogonality catastrophe in a mesoscopic conductor due to a time-dependent flux
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abstract
We consider quantum fluctuations of current in a metallic loop induced by varying magnetic flux. The dependence of the fluctuations on the flux change $\Phi$ contains a logarithmically divergent term periodic in $\Phi$ with the period $\Phi_0=hc/e$. The fluctuation is smallest near $\Phi=n\Phi_0$. The divergence is explained by a comparison with the orthogonality catastrophe problem. The $\Phi_0-$periodicity is related with the discreteness of "attempts" in the binomial statistics picture of charge fluctuations.
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cond-mat.mes-hall 1years
2026 1verdicts
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Dynamic charge oscillation in a quantum conductor driven by ultrashort voltage pulses
Dynamic charge oscillations occur in generic quantum conductors with sublinear large-bias DC current under ultrashort voltage pulses, extending perturbatively to strongly correlated regimes.