IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Backscattering of a dynamical impurity in 1D Fermi systems: a perturbative computation
Autor/es:
CARLOS M. NAÓN; MARIANO J. SALVAY
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
APS
Referencias:
Año: 2007 vol. 75 p. 113102 - 113105
ISSN:
0163-1829
Resumen:
We investigate the problem of backscattering off a time-dependent and spatially extended barrier in a one-dimensional noninteracting electrón gas. By performing a perturbative expansion in the backscattering amplitude, we compute the total energy-density of the system. We show how the free fermion spectrum and the conductance of the system are affected  by the interplay between dynamical and geometrical propereties of the impurity.