Publications

I consider models with an impurity spin coupled to a fluctuating gaussian field with or without additional Kondo coupling of the conventional sort.

We take another look at two compounds which have been discussed as possible realizations of ``spin ice,{''} namely holmium titanate and dysprosium titanate.

Spin polarized photoemission studies of the Fe 3p core level from a clean Fe(001) surface reveal an exchange splitting of 0.35 eV, considerably less than the 2.46 eV predicted in first principles L

Spin polarized photoemission studies find ferromagnetic growth for Fe thin films grown on both Pd(001) and Cu(001) substrates.

The effect of the electron-electron interactions on the D'yakanov- Perel' spin relaxation rate induced by the spin-orbit interaction is examined in two dimensions.

Electron spin resonance has been studied in single crystal spheres of Eu(x)Sr(1-x)S with samples of nominal composition x = 0.4, 0.5 and 0.54.

Charged carriers with different spin states are spatially separated in a two-dimensional hole gas.

A detailed analysis based on both the double Lorentzian and damped harmonic oscillator forms of the spectral weight function shows that the spin-wave energies strongly decrease as the temperature i

We determined the spin susceptibility chi and the effective mass m{*} towards the high density limit.

We determine the spin susceptibility chi in the weak interaction regime of a tunable, high quality, two-dimensional electron system in a GaAs/AlGaAs heterostructure.