INVESTIGADORES
NAON Carlos Maria
congresos y reuniones científicas
Título:
Corrientes Transitorias en Líquidos de Luttinger
Autor/es:
HUGO A. AITA; MARIANO J. SALVAY; CARLOS M. NAÓN
Lugar:
Malargüe, Mendoza
Reunión:
Congreso; 95 Reunión Nacional de Física; 2010
Institución organizadora:
Asociación Física Argentina
Resumen:
We study the backscattered current in a Luttinger
liquid in the presence of a point like weak impurity switched on at
finite time, taking into account finite-temperature effects. We
show how the well-known results for a static impurity are distorted.
We derive a dimensionless parameter $\tau_{R}$ as function of the
electron-electron interaction and the temperature, such that for
$\tau_{R} < 1$ ($> 1$) the switching process is relevant
(irrelevant). Our results suggest the possibility of determining
the value of the Luttinger parameter $K$ through time measurements
in transport experiments at fixed voltage.