Publications

The closely related geometric and electronic structure of the Ge(001) surface have been investigated with the tunneling microscope.

For electrons on thin films of liquid helium, it is possible for significant electron-ripplon coupling to occur.

Using a double wire geometry we probe the quantum many-body modes in ballistic wires and their dependence on Coulomb interactions.

The collective excitation spectrum of interacting electrons in one dimension has been measured by controlling the energy and momentum of electrons tunneling between two closely spaced, parallel qua

We report the first observation of tunneling systems (TS) in a quasicrystal, Mg3Zn3Al2.

We have measured the low frequency sound velocity and damping of both the icosahedral and crystalline phases of Al sub (74) Si sub 6 Mn sub (20), Mg sub 3 Zn sub 3 Al sub 2, and Al sub 5 Li sub 3 C

Low energy atomic tunneling has been observed by acoustic methods in the superconductor YBa sub 2 Cu sub 3 O sub 7 at very low temperature.

We investigate tunneling decay in a magnetic field. Because of broken time-reversal symmetry, the standard WKB technique does not apply.

A straightforward method for producing metal nitrides, which we call Thin Film Diffusion (TFD) has been developed.

Luminescence and excitation spectra were studied on MBE-grown GaAsAl(25)Ga(.75)As quantum well structures consisting of ten periods, each having a 100 nm well separated from a 5 nm well by a 5 nm