Abstract:
The effects of Umklapp scattering on the zero-temperature conductance in one-dimensional quantum wires are reexamined by taking into account both the screening of external potential and the non-uniform chemical potential shift due to electron-electron interaction. It is shown that in the case away from half-filling the conductance is given by the universal value, 2e 2/h, even in the presence of Umklapp scattering, owing to these renormalization effects of external potential. The conclusion is in accordance with the recent claim obtained for the system with non-interacting leads being attached to a quantum wire.
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Received: 5 February 1998 / Received in final form: 16 March 1998 / Accepted: 17 April 1998
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Fujimoto, S., Kawakami, N. Universal conductance in quantum wires in the presence of Umklapp scattering. Eur. Phys. J. B 5, 389–393 (1998). https://doi.org/10.1007/s100510050458
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DOI: https://doi.org/10.1007/s100510050458