TY - JOUR
T1 - Theory of coherent time-dependent transport in one-dimensional multiband semiconductor super-lattices
AU - Rotvig, J.
AU - Smith, H.
AU - Jauho, Antti-Pekka
PY - 1996
Y1 - 1996
N2 - We present an analytical study of one-dimensional semiconductor superlattices in external electric fields, which may be time dependent. A number of general results for the (quasi)energies and eigenstates are derived. An equation of motion for the density matrix is obtained for a two-band model and the properties of the solutions are analyzed. An expression for the current is obtained. Finally, Zener tunneling in a two-band tight-binding model is considered. The present work gives the background and an extension of the theoretical framework underlying our recent Letter [J. Rotvig et al., Phys. Rev. Lett. 74, 1831 (1995)], where a set of numerical simulations was presented.
AB - We present an analytical study of one-dimensional semiconductor superlattices in external electric fields, which may be time dependent. A number of general results for the (quasi)energies and eigenstates are derived. An equation of motion for the density matrix is obtained for a two-band model and the properties of the solutions are analyzed. An expression for the current is obtained. Finally, Zener tunneling in a two-band tight-binding model is considered. The present work gives the background and an extension of the theoretical framework underlying our recent Letter [J. Rotvig et al., Phys. Rev. Lett. 74, 1831 (1995)], where a set of numerical simulations was presented.
U2 - 10.1103/PhysRevB.54.17691
DO - 10.1103/PhysRevB.54.17691
M3 - Journal article
VL - 54
SP - 17691
EP - 17701
JO - Physical Review B (Condensed Matter and Materials Physics)
JF - Physical Review B (Condensed Matter and Materials Physics)
SN - 1098-0121
IS - 24
ER -