TY - GEN
T1 - Unusual tunneling characteristics of double-quantum-well heterostructures
AU - Lin, Y.
AU - Nitta, J.
AU - Newaz, A. K.M.
AU - Song, W.
AU - Mendez, E. E.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/6/30
Y1 - 2005/6/30
N2 - We report tunneling phenomena in double In0.53Ga 0.47As quantum-well structures that are at odds with the conventional parallel-momentum-conserving picture of tunneling between two-dimensional systems. We found that the tunneling current was mostly determined by the correlation between the emitter and the state in one well, and not by that between those in both wells. Clear magnetic-field-dependent features were first observed before the main resonance, corresponding to tunneling channels into the Landau levels of the well near the emitter. These facts provide evidence of the violation of in-plane momentum conservation in two-dimensional systems.
AB - We report tunneling phenomena in double In0.53Ga 0.47As quantum-well structures that are at odds with the conventional parallel-momentum-conserving picture of tunneling between two-dimensional systems. We found that the tunneling current was mostly determined by the correlation between the emitter and the state in one well, and not by that between those in both wells. Clear magnetic-field-dependent features were first observed before the main resonance, corresponding to tunneling channels into the Landau levels of the well near the emitter. These facts provide evidence of the violation of in-plane momentum conservation in two-dimensional systems.
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U2 - 10.1063/1.1994225
DO - 10.1063/1.1994225
M3 - Conference contribution
AN - SCOPUS:33749478246
SN - 0735402574
SN - 9780735402577
T3 - AIP Conference Proceedings
SP - 549
EP - 550
BT - PHYSICS OF SEMICONDUCTORS
T2 - PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27
Y2 - 26 July 2004 through 30 July 2004
ER -