TY - GEN

T1 - Femtosecond evolution of spatially inhomogeneous carrier excitations part I

T2 - 5th International Conference on Large-Scale Scientific Computing, LSSC 2005

AU - Nedjalkov, M.

AU - Gurov, T.

AU - Kosina, H.

AU - Vasileska, Dragica

AU - Palankovski, V.

PY - 2006/6/29

Y1 - 2006/6/29

N2 - The ultrafast evolution of optically excited carriers which propagate in a quantum wire and interact with three dimensional phonons is investigated. The equation, relevant to this physical problem, is derived by a first principle approach. The electron-phonon interaction is described on a quantum-kinetic level by the Levinson equation, but the evolution problem becomes inhomogeneous due to the spatial dependence of the initial condition. The initial carrier distribution is assumed Gaussian both in energy and space coordinates, an electric field can be applied along the wire. A stochastic method, described in Part II of the work, is used for solving the equation. The obtained simulation results characterize the space and energy dependence of the evolution in the zero field case. Quantum effects introduced by the early time electron-phonon interaction are analyzed.

AB - The ultrafast evolution of optically excited carriers which propagate in a quantum wire and interact with three dimensional phonons is investigated. The equation, relevant to this physical problem, is derived by a first principle approach. The electron-phonon interaction is described on a quantum-kinetic level by the Levinson equation, but the evolution problem becomes inhomogeneous due to the spatial dependence of the initial condition. The initial carrier distribution is assumed Gaussian both in energy and space coordinates, an electric field can be applied along the wire. A stochastic method, described in Part II of the work, is used for solving the equation. The obtained simulation results characterize the space and energy dependence of the evolution in the zero field case. Quantum effects introduced by the early time electron-phonon interaction are analyzed.

UR - http://www.scopus.com/inward/record.url?scp=33745296721&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745296721&partnerID=8YFLogxK

U2 - 10.1007/11666806_15

DO - 10.1007/11666806_15

M3 - Conference contribution

AN - SCOPUS:33745296721

SN - 3540319948

SN - 9783540319948

T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

SP - 149

EP - 156

BT - Large-Scale Scientific Computing - 5th International Conference, LSSC 2005, Revised Papers

Y2 - 6 June 2005 through 10 June 2005

ER -