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Rectification in one--dimensional electronic systems

Bernd Braunecker·D. E. Feldman·J. B. Marston
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Abstract

Asymmetric current--voltage ($I(V)$) curves, known as the diode or rectification effect, in one--dimensional electronic conductors can have their origin from scattering off a single asymmetric impurity in the system. We investigate this effect in the framework of the Tomonaga--Luttinger model for electrons with spin. We show that electron interactions strongly enhance the diode effect and lead to a pronounced current rectification even if the impurity potential is weak. For strongly interacting electrons and not too small voltages, the rectification current, $I_r = [I(V)+I(-V)]/2$, measuring the asymmetry in the current--voltage curve, has a power--law dependence on the voltage with a negative exponent, $I_r \sim V^{-|z|}$, leading to a bump in the current--voltage curve.

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Bernd Braunecker, D. E. Feldman, J. B. Marston. 2005-07-18. Rectification in one--dimensional electronic systems. https://doi.org/10.1103/physrevb.72.125311

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