TY - JOUR
T1 - Absence of localization in disordered tight binding models with external electric field
T2 - transmission properties
AU - Flores, J. C.
PY - 1993/2/1
Y1 - 1993/2/1
N2 - A disordered discrete model with external dc electric field is presented. The hopping term between nearest neighbour sites is consistent with the condition that the acceleration is constant and proportional to the external field in absence of disorder. It is argued that the localization length, related to the disordered system, goes to infinity due to this external dc electric field. So, strong localization does not exist. Calculations were carried out in the band centre and one crossover, between transmission and weak localization, was found for the transmitted current.
AB - A disordered discrete model with external dc electric field is presented. The hopping term between nearest neighbour sites is consistent with the condition that the acceleration is constant and proportional to the external field in absence of disorder. It is argued that the localization length, related to the disordered system, goes to infinity due to this external dc electric field. So, strong localization does not exist. Calculations were carried out in the band centre and one crossover, between transmission and weak localization, was found for the transmitted current.
UR - https://www.scopus.com/pages/publications/43949174483
U2 - 10.1016/0378-4371(93)90115-K
DO - 10.1016/0378-4371(93)90115-K
M3 - Article
AN - SCOPUS:43949174483
SN - 0378-4371
VL - 192
SP - 665
EP - 676
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
IS - 4
ER -