We review the development of random-matrix theory (RMT) during the last fifteen years. We
emphasize both the theoretical aspects, and the application of the theory to a number of …

Theoretical approaches to one-dimensional and quasi-one-dimensional quantum rings with
a few electrons are reviewed. Discrete Hubbard-type models and continuum models are …

Quantum transport is a diverse field, sometimes combining seemingly contradicting
concepts-quantum and classical, conduction and insulating-within a single nanodevice …

The development of the supersymmetry technique has led to significant advances in the
study of disordered metals and semiconductors. Proven of great use in the analysis of …

Making use of self-assembly techniques, we realize nanoscopic semiconductor quantum
rings in which the electronic states are in the true quantum limit. We employ two …

We report measurements of the magnetic response of a GaAlAs/GaAs mesoscopic ring. We
have developed a dedicated SQUID technique where sample and SQUID are on the same …

The ongoing miniaturization of solid state devices often leads to the question:“How small
can we make resistors, transistors, etc., without changing the way they work?” The question …

Quantum mechanical experiments in ring geometries have long fascinated physicists. Open
rings connected to leads, for example, allow the observation of the Aharonov–Bohm effect …

Critical phenomena arise in a wide variety of physical systems. Classi cal examples are the
liquid-vapour critical point or the paramagnetic ferromagnetic transition. Further examples …

Quantum mechanics predicts that the equilibrium state of a resistive metal ring will contain a
dissipationless current. This persistent current has been the focus of considerable …