Temperature induced phase averaging in one-dimensional mesoscopic systems
arXiv:cond-mat/0606486 · doi:10.1103/PhysRevB.75.035126
Abstract
We analyse phase averaging in one-dimensional interacting mesoscopic systems with several barriers and show that for incommensurate positions an independent average over several phases can be induced by finite temperature. For three strong barriers with conductances G_i and mutual distances larger than the thermal length, we obtain G ~ sqrt{G_1 G_2 G_3} for the total conductance G. For an interacting wire, this implies power laws in G(T) with novel exponents, which we propose as an experimental fingerprint to distinguish temperature induced phase averaging from dephasing.
6 pages, 5 figures; added one figure; slightly extended
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- Dual fermionic variables and renormalization group approach to junctions of strongly interacting quantum wires
- Current-voltage correlations in interferometers
- Electron interference and entanglement in coupled 1D systems with noise
- Coupling-geometry-induced temperature scales in the conductance of Luttinger liquid wires