TY - JOUR
T1 - Controllable negative and positive group delay in transmission through a single quantum well at finite magnetic fields
AU - Ban, Yue
AU - Chen, Xi
AU - Li, Chun Fang
PY - 2007/4/16
Y1 - 2007/4/16
N2 - We investigate the controllable negative and positive group delay in transmission through a single quantum well at the finite longitudinal magnetic fields. It is shown that the magneto-coupling effect between the longitudinal motion component and the transverse Landau orbits plays an important role in the group delay. The group delay depends not only on the width of potential well and the incident energy, but also on the magnetic-field strengthen and the Landau quantum number. The results show that the group delay can be changed from positive to negative by the modulation of the magnetic field. These interesting phenomena may lead to the tunable quantum mechanical delay line.
AB - We investigate the controllable negative and positive group delay in transmission through a single quantum well at the finite longitudinal magnetic fields. It is shown that the magneto-coupling effect between the longitudinal motion component and the transverse Landau orbits plays an important role in the group delay. The group delay depends not only on the width of potential well and the incident energy, but also on the magnetic-field strengthen and the Landau quantum number. The results show that the group delay can be changed from positive to negative by the modulation of the magnetic field. These interesting phenomena may lead to the tunable quantum mechanical delay line.
KW - Controllable group delay
KW - Magneto-coupling
KW - Quantum well
UR - https://www.scopus.com/pages/publications/33847211470
U2 - 10.1016/j.physleta.2006.12.082
DO - 10.1016/j.physleta.2006.12.082
M3 - Article
AN - SCOPUS:33847211470
SN - 0375-9601
VL - 364
SP - 76
EP - 80
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 1
ER -