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Aharonov–Bohm oscillations of a tuneable quantum ring

Keyser, U. F., Borck, S., Haug, R. J., Abstreiter, Gerhard, Bichler, Max and Wegscheider, Werner (2002) Aharonov–Bohm oscillations of a tuneable quantum ring. Semiconductor Science and Technology 17 (5), L22-L24.

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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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Item type:Article
Date:May 2002
Institutions:Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
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Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Item ID:11305
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