The technique of measuring the energy distribution of electrons which have been field
emitted from a cold cathode is considered. The general historical and introductory theory is …

Spectroscopic measurements with low-temperature scanning tunneling microscopes have
been used very successfully for studying not only individual atomic or molecular spins on …

Data from ab-oriented YBa 2 Cu 3 O 7/I/Cu tunnel junctions are presented. Self-assembled
monolayers form the insulating tunnel barrier, I. The YBa 2 Cu 3 O 7 features in the tunneling …

We have observed both Kondo-assisted tunneling and simple resonant tunneling via a
single charge trap state in the voltage-dependent differential conductance of a point-contact …

Using nonequilibrium perturbation theory, we investigate the nonlinear transport through a
quantum dot in the Kondo regime in the presence of a magnetic field. We calculate the …

While the properties of the Kondo model in equilibrium are very well understood, much less
is known for Kondo systems out of equilibrium. We study the properties of a quantum dot in …

The nonlocal spin valve (NLSV) enables unambiguous study of spin transport, owing to its
ability to isolate pure spin currents. A key principle of NLSV operation is that the “spin signal” …

A basic consequence of quantum mechanics makes possible measurable electrical currents
between two conductors separated by a sufficiently thin uniform (approximately 20 AA) …

We report on high-resolution differential conductance experiments on nanoscale
superconductor-ferromagnet tunnel junctions with ultrathin oxide tunnel barriers. We …

Small fluctuations of a potential barrier can generate very large fluctuations of the quantum
tunneling transmission. The statistical properties of the tunneling transmission exhibit a rich …