TY - JOUR
T1 - Local Larmor clock approach to the escape time
AU - López Villanueva, J. A.
AU - Gasparian, V.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - The escape of an electron from a localized state in a quantum well with one or several surrounding barriers is analyzed using the local Larmor clock approach. We show that two time scales can be involved in the escape time problem, such as in the case of a scattering configuration. The particular example of a potential well with a hard wall condition on one side, i.e. escaping through only one open channel, is investigated, and the two time components are calculated analytically. One of the time components is shown to coincide with the lifetime expression obtained with a different approach, in the case of an opaque barrier, at an energy close to the bound level in the well.
AB - The escape of an electron from a localized state in a quantum well with one or several surrounding barriers is analyzed using the local Larmor clock approach. We show that two time scales can be involved in the escape time problem, such as in the case of a scattering configuration. The particular example of a potential well with a hard wall condition on one side, i.e. escaping through only one open channel, is investigated, and the two time components are calculated analytically. One of the time components is shown to coincide with the lifetime expression obtained with a different approach, in the case of an opaque barrier, at an energy close to the bound level in the well.
UR - https://www.scopus.com/pages/publications/0002134232
U2 - 10.1016/S0375-9601(99)00412-0
DO - 10.1016/S0375-9601(99)00412-0
M3 - Article
AN - SCOPUS:0002134232
SN - 0375-9601
VL - 260
SP - 286
EP - 293
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 3-4
ER -