12 papers · 1 filter
Phase-dependent magnetoconductance fluctuations in a chaotic Josephson junction
P. W. Brouwer, C. W. J. Beenakker
Motivated by recent experiments by Den Hartog et al., we present a random-matrix theory for the magnetoconductance fluctuations of a chaotic quantum dot which is coupled by point c…
Effect of the coupling to a superconductor on the level statistics of a metal grain in a magnetic field
K. M. Frahm, P. W. Brouwer, J. A. Melsen +1
A theory is presented for the statistics of the excitation spectrum of a disordered metal grain in contact with a superconductor. A magnetic field is applied to fully break time-re…
Non-perturbative calculation of the probability distribution of plane-wave transmission through a disordered waveguide
S. A. van Langen, P. W. Brouwer, C. W. J. Beenakker
A non-perturbative random-matrix theory is applied to the transmission of a monochromatic scalar wave through a disordered waveguide. The probability distributions of the transmitt…
Weak Localization Coexisting with a Magnetic Field in a Normal-Metal--Superconductor Microbridge
P. W. Brouwer, C. W. J. Beenakker
A random-matrix theory is presented which shows that breaking time-reversal symmetry by itself does {\em not} suppress the weak-localization correction to the conductance of a diso…
Insensitivity to Time-Reversal Symmetry Breaking of Universal Conductance Fluctuations with Andreev Reflection
P. W. Brouwer, C. W. J. Beenakker
Numerical simulations of conduction through a disordered microbridge between a normal metal and a superconductor have revealed an anomalous insensitivity of the conductance fluctua…
Conductance Fluctuations in a Disordered Double-Barrier Junction
J. A. Melsen, C. W. J. Beenakker
We consider the effect of disorder on coherent tunneling through two barriers in series, in the regime of overlapping transmission resonances. We present analytical calculations (u…