9 papers
Coherent oscillations in a Cooper-pair box
Mahn-Soo Choi, Rosario Fazio, Jens Siewert +1
This paper is devoted to an analysis of the experiment by Nakamura {\it et al.} (Nature {\bf 398}, 786 (1999)) on the quantum state control in Josephson junctions devices. By consi…
Diamagnetic Response of an N-S-Proximity System at Arbitrary Impurity Concentration
W. Belzig, C. Bruder, A. L. Fauchere
We investigate the magnetic response of normal-metal--superconductor proximity systems for arbitrary concentrations of impurities and at arbitrary temperatures. Using the quasiclas…
Aharonov-Bohm-Type Oscillations of Thermopower in a Quantum Dot Ring Geometry
Ya. M. Blanter, C. Bruder, Rosario Fazio +1
We investigate Aharonov-Bohm-type oscillations of the thermopower of a quantum dot embedded in a ring for the case when the interaction between electrons can be neglected. The ther…
Local Density of States in a Dirty Normal Metal connected to a Superconductor
W. Belzig, C. Bruder, Gerd Schoen
A superconductor in contact with a normal metal not only induces superconducting correlations, known as proximity effect, but also modifies the density of states at some distance f…
Diamagnetic Response of Normal-metal -- Superconductor Double Layers
W. Belzig, C. Bruder, Gerd Schön
The magnetic response of a proximity-coupled superconductor-normal metal sandwich is studied within the framework of the quasiclassical theory. The magnetization is evaluated for f…
Quantum-Phase Transitions of Interacting Bosons and the Supersolid Phase
Anne van Otterlo, Karl-Heinz Wagenblast, Reinhard Baltin +3
We investigate the properties of strongly interacting bosons in two dimensions at zero temperature using mean-field theory, a variational Ansatz for the ground state wave function,…