Length-Dependent Conductance of a Spin-Incoherent Hubbard chain; Monte Carlo Calculations
arXiv:cond-mat/0609742 · doi:10.1103/PhysRevLett.98.166401
Abstract
The dc conductance of a short spin-incoherent Hubbard chain coupled to leads is investigated using quantum Monte Carlo calculations. In contrast with the Luttinger liquid regime, where the conductance is equal to the noninteracting value, the spin-incoherent regime displays a conductance that decreases rapidly with chain length down to a value of roughly 1.5e2/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.
v2: New title and revised introduction. Improved extrapolation and error analysis. New data for Lw=2,4 in Fig5(a)
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Cited by in corpus (5)
- Electron-electron interaction effects in quantum point contacts
- Resistivity of inhomogeneous quantum wires
- Ferromagnetic Spin Coupling as the Origin of 0.7 Anomaly in Quantum Point Contacts
- Electronic transport in inhomogeneous quantum wires
- Tunneling Density of States, Pair Correlation, and Josephson Current in Spin-Incoherent Luttinger Liquid-Superconductor Hybrid Systems