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29 March 2024
 
  » arxiv » cond-mat/9503097

 Article overview


Quantum conductance fluctuations in 3D ballistic adiabatic wires.
Vladimir I. Fal’ko ; G.B. Lesovik ;
Date 17 Mar 1995
Subject cond-mat
AffiliationMax-Planck-Institut fur Festkorperforschung, Stuttgart, Germany) and G.B. Lesovik (Institute of Solid State Physics, Chernogolovka, Russia
AbstractQuantum conductance of 3D ballistic wires with idealy flat boundaries obeys fluctuations with the properties quite distinguishable from those of universal conductance fluctuations: Both their amplitude and the sensitivity to the magnetic field flux $Phi =HS$ penetrated into the sample cross-sectional area $S$ are different and depend on details of the cross-sectioanl shape of the wire. When the latter is integrable, conductance fluctuations have the enlarged amplitude $delta Gsimleft[(e^2/h)^3G ight]^{1/4}$. When the cross-sectional shape of a wire is non-integrable, the irregular part of a conductance has the $e^ 2/h$ scale, whereas the correlation field is reduced to the value of $H_Ssim (lambda_F/sqrt S)^{1/2}(Phi_0/S)$ and the correlation voltage of the nonlinear conductance fluctuations has the scale of $eV_csimhbar^2/mSsim E_F/(S/lambda_F)$, where $lambda_F=1/p_F$ is the Fermi wavelength.
Source arXiv, cond-mat/9503097
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