An analytical theory of intervalley mixing at semiconductor heterojunctions is presented. Burt’s envelope-function representation is used to analyze a pseudopotential Hamiltonian, yielding a simple… (More)

This paper examines the properties of the self-energy operator in lattice-matched semiconductor heterostructures, focusing on nonanalytic behavior at small values of the crystal momentum, which gives… (More)

The differential gain, modulation response, and damping rate of strained-layer Ino•3Ga(J•7As multiple quantum well (MQW) short cavity graded-index separate confmement heterostrucutre (GRINSCH) and… (More)

A method for incorporating electromagnetic fields into empirical tight-binding theory is derived from the principle of local gauge symmetry. Gauge invariance is shown to be incompatible with… (More)

This paper examines linear- k terms in the gamma(8) valence-band Hamiltonian for heterostructures of zinc-blende-type semiconductors. In bulk crystals such terms are known to be extremely small, due… (More)

We propose a scheme to realize persistent mass and spin currents in cold atoms using optically generated gauge potentials. Two degenerate dark states can be created by coupling “tripod” atoms to… (More)

A multi-band effective-mass Hamiltonian is derived for lattice-matched semiconductor nanostructures in a slowly varying external magnetic field. The theory is derived from the first-principles… (More)