Conductance and its universal fluctuations in the directed network model at the crossover to the quasi-one-dimensional regime
Gruzberg, Ilya A. · Read, N. · Sachdev, Subir
Original · EN
The directed network model describing chiral edge states on the surface of a cylindrical 3D quantum Hall system is known to map to a one-dimensional quantum ferromagnetic spin chain. Using the spin wave expansion for this chain, we determine the universal functions for the crossovers between the 2D chiral metallic and 1D metallic regimes in the mean and variance of the conductance along the cylinder, to first nontrivial order.
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