Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy

K. Bollweg; T. Kurth; D. Heitmann; V. Gudmundsson; E. Vasiliadou; P. Grambow; K. Eberl

doi:10.1103/PhysRevLett.76.2774

Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy

K. Bollweg
, T. Kurth
, D. Heitmann
, V. Gudmundsson
, E. Vasiliadou
, P. Grambow
, K. Eberl

Faculty of Physical Sciences

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

In arrays of Al x Ga 1-x As -GaAs quantum dots and antidots we observe, with far-infrared spectroscopy for increasing magnetic field, huge (up to 20%) oscillations of the resonance frequency of the edge-magnetoplasmon-like mode.At fully occupied Landau levels the frequency has a maximum for the dots, and the reverse behavior, a minimum, for the antidots.We show that this is caused by the formation of compressible and incompressible stripes at the edges of the dots and antidots.

Original language	English
Pages (from-to)	2774-2777
Number of pages	4
Journal	Physical Review Letters
Volume	76
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.76.2774
Publication status	Published - 8 Apr 1996

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10.1103/PhysRevLett.76.2774

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title = "Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy",

abstract = "In arrays of Al x Ga 1-x As -GaAs quantum dots and antidots we observe, with far-infrared spectroscopy for increasing magnetic field, huge (up to 20\%) oscillations of the resonance frequency of the edge-magnetoplasmon-like mode.At fully occupied Landau levels the frequency has a maximum for the dots, and the reverse behavior, a minimum, for the antidots.We show that this is caused by the formation of compressible and incompressible stripes at the edges of the dots and antidots.",

author = "K. Bollweg and T. Kurth and D. Heitmann and V. Gudmundsson and E. Vasiliadou and P. Grambow and K. Eberl",

year = "1996",

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T1 - Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy

AU - Bollweg, K.

AU - Kurth, T.

AU - Heitmann, D.

AU - Gudmundsson, V.

AU - Vasiliadou, E.

AU - Grambow, P.

AU - Eberl, K.

PY - 1996/4/8

Y1 - 1996/4/8

N2 - In arrays of Al x Ga 1-x As -GaAs quantum dots and antidots we observe, with far-infrared spectroscopy for increasing magnetic field, huge (up to 20%) oscillations of the resonance frequency of the edge-magnetoplasmon-like mode.At fully occupied Landau levels the frequency has a maximum for the dots, and the reverse behavior, a minimum, for the antidots.We show that this is caused by the formation of compressible and incompressible stripes at the edges of the dots and antidots.

AB - In arrays of Al x Ga 1-x As -GaAs quantum dots and antidots we observe, with far-infrared spectroscopy for increasing magnetic field, huge (up to 20%) oscillations of the resonance frequency of the edge-magnetoplasmon-like mode.At fully occupied Landau levels the frequency has a maximum for the dots, and the reverse behavior, a minimum, for the antidots.We show that this is caused by the formation of compressible and incompressible stripes at the edges of the dots and antidots.

UR - https://www.scopus.com/pages/publications/0000239612

U2 - 10.1103/PhysRevLett.76.2774

DO - 10.1103/PhysRevLett.76.2774

M3 - Article

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VL - 76

SP - 2774

EP - 2777

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

ER -

Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy

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