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Conductance of a short spin incoherent Hubbard chain; Monte Carlo calculations | Olav F. Syljuasen
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28 Sep 2006 | Subject: | Mesoscopic Systems and Quantum Hall Effect | Abstract: | The DC conductance of a short Hubbard chain coupled to leads is investigated using quantum Monte Carlo. In contrast to the Luttinger liquid regime, where the conductance is equal to the non-interacting value, the spin incoherent regime displays a conductance that decreases rapidly with chain length down to a value of roughly 1.5e^2/h for a four site chain followed by a slower decrease for longer chains. We also discuss the resistance contribution from scattering in the contacts. | Source: | arXiv, cond-mat/0609742 | Services: | Forum | Review | PDF | Favorites |
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