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Distribution of Parametric Conductance Derivatives of a Quantum Dot

Brouwer, P.W.
Van Langen, S.A.
Frahm, K.M.
Beenakker, C.W.J.
Published in Physical Review Letters. 1997, vol. 79, no. 5, p. 913-916
Abstract The conductance G of a quantum dot with single-mode ballistic point contacts depends sensitively on external parameters X, such as gate voltage and magnetic field. We calculate the joint distribution of G and dG/dX by relating it to the distribution of the Wigner-Smith time-delay matrix of a chaotic system. The distribution of dG/dX has a singularity at zero and algebraic tails. While G and dG/dX are correlated, the ratio of dG/dX and
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BROUWER, P.W. et al. Distribution of Parametric Conductance Derivatives of a Quantum Dot. In: Physical Review Letters, 1997, vol. 79, n° 5, p. 913-916. doi: 10.1103/PhysRevLett.79.913 https://archive-ouverte.unige.ch/unige:4275

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Deposited on : 2009-11-30

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