Unusual tunneling characteristics of double-quantum-well heterostructures

Y. Lin; J. Nitta; A. K.M. Newaz; W. Song; E. E. Mendez

doi:10.1063/1.1994225

Unusual tunneling characteristics of double-quantum-well heterostructures

Y. Lin, J. Nitta, A. K.M. Newaz, W. Song, E. E. Mendez

ENG - Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We report tunneling phenomena in double In_0.53Ga _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.

Original language	English
Title of host publication	PHYSICS OF SEMICONDUCTORS
Subtitle of host publication	27th International Conference on the Physics of Semiconductors, ICPS-27
Pages	549-550
Number of pages	2
DOIs	https://doi.org/10.1063/1.1994225
Publication status	Published - 2005 Jun 30
Event	PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27 - Flagstaff, AZ, United States Duration: 2004 Jul 26 → 2004 Jul 30

Publication series

Name	AIP Conference Proceedings
Volume	772
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27
Country	United States
City	Flagstaff, AZ
Period	04/7/26 → 04/7/30

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.1994225

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Unusual tunneling characteristics of double-quantum-well heterostructures. / Lin, Y.; Nitta, J.; Newaz, A. K.M.; Song, W.; Mendez, E. E.

PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27. 2005. p. 549-550 (AIP Conference Proceedings; Vol. 772).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lin, Y, Nitta, J, Newaz, AKM, Song, W & Mendez, EE 2005, Unusual tunneling characteristics of double-quantum-well heterostructures. in PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27. AIP Conference Proceedings, vol. 772, pp. 549-550, PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27, Flagstaff, AZ, United States, 04/7/26. https://doi.org/10.1063/1.1994225

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title = "Unusual tunneling characteristics of double-quantum-well heterostructures",

abstract = "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.",

author = "Y. Lin and J. Nitta and Newaz, {A. K.M.} and W. Song and Mendez, {E. E.}",

note = "Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27 ; Conference date: 26-07-2004 Through 30-07-2004",

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AU - Nitta, J.

AU - Newaz, A. K.M.

AU - Song, W.

AU - Mendez, E. E.

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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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