Aharonov-Bohm oscillations of a tuneable quantum ring

U. F. Keyser; S. Borck; R. J. Haug; M. Bichler; G. Abstreiter; W. Wegscheider

doi:10.1088/0268-1242/17/5/103

Aharonov-Bohm oscillations of a tuneable quantum ring

U. F. Keyser, S. Borck, R. J. Haug, M. Bichler, G. Abstreiter, W. Wegscheider

Natural Sciences

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81 Scopus citations

Abstract

Using an atomic force microscope a ring geometry with self-aligned in-plane gates was directly written into a GaAs/AlGaAs heterostructure. Transport measurements in the open regime show only one transmitting mode and Aharonov-Bohm oscillations with more than 50% modulation are observed in the conductance. The tuning via in-plane gates allows one to study the Aharonov-Bohm effect in the whole range from the open ring to the Coulomb-blockade regime.

Original language	English
Pages (from-to)	L22-L24
Journal	Semiconductor Science and Technology
Volume	17
Issue number	5
DOIs	https://doi.org/10.1088/0268-1242/17/5/103
State	Published - May 2002

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abstract = "Using an atomic force microscope a ring geometry with self-aligned in-plane gates was directly written into a GaAs/AlGaAs heterostructure. Transport measurements in the open regime show only one transmitting mode and Aharonov-Bohm oscillations with more than 50% modulation are observed in the conductance. The tuning via in-plane gates allows one to study the Aharonov-Bohm effect in the whole range from the open ring to the Coulomb-blockade regime.",

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AU - Keyser, U. F.

AU - Borck, S.

AU - Haug, R. J.

AU - Bichler, M.

AU - Abstreiter, G.

AU - Wegscheider, W.

PY - 2002/5

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AB - Using an atomic force microscope a ring geometry with self-aligned in-plane gates was directly written into a GaAs/AlGaAs heterostructure. Transport measurements in the open regime show only one transmitting mode and Aharonov-Bohm oscillations with more than 50% modulation are observed in the conductance. The tuning via in-plane gates allows one to study the Aharonov-Bohm effect in the whole range from the open ring to the Coulomb-blockade regime.

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SP - L22-L24

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JF - Semiconductor Science and Technology

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ER -

Aharonov-Bohm oscillations of a tuneable quantum ring

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