Oscillatory density-of-states of Landau bands in a two-dimensional lateral surface superlattice

C. T. Liu; D. C. Tsui; M. Shayegan; K. Ismail; D. A. Antoniadis; Henry I. Smith

doi:10.1016/0038-1098(90)90588-3

Oscillatory density-of-states of Landau bands in a two-dimensional lateral surface superlattice

C. T. Liu, D. C. Tsui, M. Shayegan, K. Ismail, D. A. Antoniadis, Henry I. Smith

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

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Abstract

A new oscillatory phenomenon is observed in the magneto-capacitance between the high mobility two-dimensional electron gas in a GaAs/AlGaAs heterostructure and a metal grid gate of 200nm periodicity. The observed minima reflect the minima in the density-of-states of Landau bands resulting from removal of the Landau level degeneracy by the grid gate potential. A model calculation is carried out and the results agree with the experimental observation.

Original language	English (US)
Pages (from-to)	395-399
Number of pages	5
Journal	Solid State Communications
Volume	75
Issue number	5
DOIs	https://doi.org/10.1016/0038-1098(90)90588-3
State	Published - Aug 1990

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(90)90588-3

Cite this

@article{6bf209da633341b594d272205561e276,

title = "Oscillatory density-of-states of Landau bands in a two-dimensional lateral surface superlattice",

abstract = "A new oscillatory phenomenon is observed in the magneto-capacitance between the high mobility two-dimensional electron gas in a GaAs/AlGaAs heterostructure and a metal grid gate of 200nm periodicity. The observed minima reflect the minima in the density-of-states of Landau bands resulting from removal of the Landau level degeneracy by the grid gate potential. A model calculation is carried out and the results agree with the experimental observation.",

author = "Liu, \{C. T.\} and Tsui, \{D. C.\} and M. Shayegan and K. Ismail and Antoniadis, \{D. A.\} and Smith, \{Henry I.\}",

note = "Funding Information: Acknowledgement--We thank M. Frei and H.P. Wei for useful discussions, and M. Santos for technical assistance. This work is supported in part by the Air Force Office of Scientific Research under grant AFOSR-88-0248 at Princeton and AFOSR-88-0304 at MIT, and by the National Science Foundation under grant ECS-853110.",

year = "1990",

month = aug,

doi = "10.1016/0038-1098(90)90588-3",

language = "English (US)",

volume = "75",

pages = "395--399",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

number = "5",

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TY - JOUR

T1 - Oscillatory density-of-states of Landau bands in a two-dimensional lateral surface superlattice

AU - Liu, C. T.

AU - Tsui, D. C.

AU - Shayegan, M.

AU - Ismail, K.

AU - Antoniadis, D. A.

AU - Smith, Henry I.

N1 - Funding Information: Acknowledgement--We thank M. Frei and H.P. Wei for useful discussions, and M. Santos for technical assistance. This work is supported in part by the Air Force Office of Scientific Research under grant AFOSR-88-0248 at Princeton and AFOSR-88-0304 at MIT, and by the National Science Foundation under grant ECS-853110.

PY - 1990/8

Y1 - 1990/8

N2 - A new oscillatory phenomenon is observed in the magneto-capacitance between the high mobility two-dimensional electron gas in a GaAs/AlGaAs heterostructure and a metal grid gate of 200nm periodicity. The observed minima reflect the minima in the density-of-states of Landau bands resulting from removal of the Landau level degeneracy by the grid gate potential. A model calculation is carried out and the results agree with the experimental observation.

AB - A new oscillatory phenomenon is observed in the magneto-capacitance between the high mobility two-dimensional electron gas in a GaAs/AlGaAs heterostructure and a metal grid gate of 200nm periodicity. The observed minima reflect the minima in the density-of-states of Landau bands resulting from removal of the Landau level degeneracy by the grid gate potential. A model calculation is carried out and the results agree with the experimental observation.

UR - https://www.scopus.com/pages/publications/0025473177

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U2 - 10.1016/0038-1098(90)90588-3

DO - 10.1016/0038-1098(90)90588-3

M3 - Article

AN - SCOPUS:0025473177

SN - 0038-1098

VL - 75

SP - 395

EP - 399

JO - Solid State Communications

JF - Solid State Communications

IS - 5

ER -

Oscillatory density-of-states of Landau bands in a two-dimensional lateral surface superlattice

Abstract

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