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Rectification in one-dimensional electronic systems
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DOI：10.1103/PhysRevB.72.125311.png)
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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 similar to V-\z\, leading to a bump in the current-voltage curve.
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3.7
论文数:
15.4W
被引数:
41.0W
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