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26 papers · 2 filters
Broken symmetry, hyper-fermions, and universal conductance in transport through a fractional quantum Hall edge
Vadim Ponomarenko, Dmitri Averin
We have found solution to a model of tunneling between a multi-channel Fermi liquid reservoir and an edge of the principal fractional quantum Hall liquid (FQHL) in the strong coupl…
Mesoscopic fluctuations of the Coulomb drag at =1/2
B. N. Narozhny, I. L. Aleiner, Ady Stern
We consider mesoscopic fluctuations of Coulomb drag transresistivity between two layers at a Landau level filling factor each. We find that at low temperature sample to sam…
Free Random Levy Matrices
Z. Burda, R. A. Janik, J. Jurkiewicz +3
Using the theory of free random variables (FRV) and the Coulomb gas analogy, we construct stable random matrix ensembles that are random matrix generalizations of the classical one…
Ground state spin and Coulomb blockade peak motion in chaotic quantum dots
J. A. Folk, C. M. Marcus, R. Berkovits +3
We investigate experimentally and theoretically the behavior of Coulomb blockade (CB) peaks in a magnetic field that couples principally to the ground-state spin (rather than the o…
Experimental tests for the relevance of two-level systems for electron dephasing
I. L. Aleiner, B. L. Altshuler, Y. M. Galperin
The relevance of tunneling two-level systems (TLS) for electron dephasing in metals is analyzed. We demonstrate that if the concentration of TLS is sufficient to cause the observed…
Invariance of Charge of Laughlin Quasiparticles
V. J. Goldman, I. Karakurt, Jun Liu +1
A Quantum Antidot electrometer has been used in the first direct observation of the fractionally quantized electric charge. In this paper we report experiments performed on the int…