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Rectification in Luttinger liquids

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arxiv cond-mat/0410089 v2 pith:X7TCZDTA submitted 2004-10-04 cond-mat.mes-hall cond-mat.str-el

D. E. Feldman , S. Scheidl , V. M. Vinokur This is my paper
classification cond-mat.mes-hallcond-mat.str-el
keywords asymmetricratchetcurrentliquidsluttingerpotentialrectificationbias
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We investigate the rectification of an ac bias in Luttinger liquids in the presence of an asymmetric potential (the ratchet effect). We show that strong repulsive electron interaction enhances the ratchet current in comparison with Fermi liquid systems, and the I-V curve is strongly asymmetric in the low-voltage regime even for a weak asymmetric potential. At higher voltages the ratchet current exhibits an oscillatory voltage dependence.

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