Investigation of the mesoscopic Aharonov-Bohm effect in low magnetic fields

A. E. Hansen; S. Pedersen; A. Kristensen; C. B. Sørensen; P. E. Lindelof

doi:10.1016/S1386-9477(00)00056-4

Investigation of the mesoscopic Aharonov-Bohm effect in low magnetic fields

A. E. Hansen^*, S. Pedersen, A. Kristensen, C. B. Sørensen, P. E. Lindelof

^*Corresponding author for this work

9 Citations (Scopus)

Abstract

We have investigated the Aharonov-Bohm effect in mesoscopic semiconductor GaAs/GaAlAs rings in low magnetic fields. The oscillatory magnetoconductance of these systems is systematically studied as a function of electron density. We observe phase shifts of π in the magnetoconductance oscillations, and halving of the fundamental h/e period, as the density is varied. Theoretically, we find agreement with the experiment, by introducing an asymmetry between the two arms of the ring.

Original language	English
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	7
Issue number	3
Pages (from-to)	776-780
Number of pages	5
ISSN	1386-9477
DOIs	https://doi.org/10.1016/S1386-9477(00)00056-4
Publication status	Published - May 2000
Externally published	Yes
Event	MSS9: The 9th International Conference on Modulated Semiconductor Structures - Fukuoka, Jpn Duration: 12 Jul 1999 → 16 Jul 1999

Conference

Conference	MSS9: The 9th International Conference on Modulated Semiconductor Structures
City	Fukuoka, Jpn
Period	12/07/1999 → 16/07/1999
Sponsor	Association for Promotion of Electrical and Information Eng., et al., Fukuoka Prefecture, International Communications Foundation, Technology Research Foundation

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10.1016/S1386-9477(00)00056-4

Cite this

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title = "Investigation of the mesoscopic Aharonov-Bohm effect in low magnetic fields",

abstract = "We have investigated the Aharonov-Bohm effect in mesoscopic semiconductor GaAs/GaAlAs rings in low magnetic fields. The oscillatory magnetoconductance of these systems is systematically studied as a function of electron density. We observe phase shifts of π in the magnetoconductance oscillations, and halving of the fundamental h/e period, as the density is varied. Theoretically, we find agreement with the experiment, by introducing an asymmetry between the two arms of the ring.",

author = "Hansen, {A. E.} and S. Pedersen and A. Kristensen and S{\o}rensen, {C. B.} and Lindelof, {P. E.}",

note = "Funding Information: We wish to thank David H. Cobden and Per Hedeg{\aa}rd for enlightening discussions. This work was financially supported by Velux Fonden, Ib Henriksen Foundation, Novo Nordisk Foundation, the Danish Research Council (Grant 9502937, 9601677 and 9800243) and the Danish Technical Research Council (Grant 9701490).; MSS9: The 9th International Conference on Modulated Semiconductor Structures ; Conference date: 12-07-1999 Through 16-07-1999",

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doi = "10.1016/S1386-9477(00)00056-4",

language = "English",

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pages = "776--780",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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T1 - Investigation of the mesoscopic Aharonov-Bohm effect in low magnetic fields

AU - Hansen, A. E.

AU - Pedersen, S.

AU - Kristensen, A.

AU - Sørensen, C. B.

AU - Lindelof, P. E.

N1 - Funding Information: We wish to thank David H. Cobden and Per Hedegård for enlightening discussions. This work was financially supported by Velux Fonden, Ib Henriksen Foundation, Novo Nordisk Foundation, the Danish Research Council (Grant 9502937, 9601677 and 9800243) and the Danish Technical Research Council (Grant 9701490).

PY - 2000/5

Y1 - 2000/5

N2 - We have investigated the Aharonov-Bohm effect in mesoscopic semiconductor GaAs/GaAlAs rings in low magnetic fields. The oscillatory magnetoconductance of these systems is systematically studied as a function of electron density. We observe phase shifts of π in the magnetoconductance oscillations, and halving of the fundamental h/e period, as the density is varied. Theoretically, we find agreement with the experiment, by introducing an asymmetry between the two arms of the ring.

AB - We have investigated the Aharonov-Bohm effect in mesoscopic semiconductor GaAs/GaAlAs rings in low magnetic fields. The oscillatory magnetoconductance of these systems is systematically studied as a function of electron density. We observe phase shifts of π in the magnetoconductance oscillations, and halving of the fundamental h/e period, as the density is varied. Theoretically, we find agreement with the experiment, by introducing an asymmetry between the two arms of the ring.

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U2 - 10.1016/S1386-9477(00)00056-4

DO - 10.1016/S1386-9477(00)00056-4

M3 - Conference article

AN - SCOPUS:0033707744

VL - 7

SP - 776

EP - 780

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

IS - 3

T2 - MSS9: The 9th International Conference on Modulated Semiconductor Structures

Y2 - 12 July 1999 through 16 July 1999

ER -

Investigation of the mesoscopic Aharonov-Bohm effect in low magnetic fields

Abstract

Conference

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