Laterally Modulated 2D Electron System in the Extreme Quantum Limit

S. Melinte; Mona Berciu; Chenggang Zhou; E. Tutuc; S. J. Papadakis; C. Harrison; E. P. De Poortere; Mingshaw Wu; P. M. Chaikin; M. Shayegan; R. N. Bhatt; R. A. Register

doi:10.1103/PhysRevLett.92.036802

Laterally Modulated 2D Electron System in the Extreme Quantum Limit

S. Melinte, Mona Berciu, Chenggang Zhou, E. Tutuc, S. J. Papadakis, C. Harrison, E. P. De Poortere, Mingshaw Wu, P. M. Chaikin, M. Shayegan, R. N. Bhatt, R. A. Register

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1 Scopus citations

Abstract

We report on magnetotransport of a two-dimensional electron system (2DES), located 32 nm below the surface, with a surface superlattice gate structure of periodicity 39 nm imposing a periodic modulation of its potential. For low Landau level fillings [Formula presented], the diagonal resistivity displays a rich pattern of fluctuations, even though the disorder dominates over the periodic modulation. Theoretical arguments based on the combined effects of the long-wavelength, strong disorder and the short-wavelength, weak periodic modulation present in the 2DES qualitatively explain the data.

Original language	English (US)
Pages (from-to)	4
Number of pages	1
Journal	Physical review letters
Volume	92
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.92.036802
State	Published - 2004

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.92.036802

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abstract = "We report on magnetotransport of a two-dimensional electron system (2DES), located 32 nm below the surface, with a surface superlattice gate structure of periodicity 39 nm imposing a periodic modulation of its potential. For low Landau level fillings [Formula presented], the diagonal resistivity displays a rich pattern of fluctuations, even though the disorder dominates over the periodic modulation. Theoretical arguments based on the combined effects of the long-wavelength, strong disorder and the short-wavelength, weak periodic modulation present in the 2DES qualitatively explain the data.",

author = "S. Melinte and Mona Berciu and Chenggang Zhou and E. Tutuc and Papadakis, {S. J.} and C. Harrison and {De Poortere}, {E. P.} and Mingshaw Wu and Chaikin, {P. M.} and M. Shayegan and Bhatt, {R. N.} and Register, {R. A.}",

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doi = "10.1103/PhysRevLett.92.036802",

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T1 - Laterally Modulated 2D Electron System in the Extreme Quantum Limit

AU - Melinte, S.

AU - Berciu, Mona

AU - Zhou, Chenggang

AU - Tutuc, E.

AU - Papadakis, S. J.

AU - Harrison, C.

AU - De Poortere, E. P.

AU - Wu, Mingshaw

AU - Chaikin, P. M.

AU - Shayegan, M.

AU - Bhatt, R. N.

AU - Register, R. A.

PY - 2004

Y1 - 2004

N2 - We report on magnetotransport of a two-dimensional electron system (2DES), located 32 nm below the surface, with a surface superlattice gate structure of periodicity 39 nm imposing a periodic modulation of its potential. For low Landau level fillings [Formula presented], the diagonal resistivity displays a rich pattern of fluctuations, even though the disorder dominates over the periodic modulation. Theoretical arguments based on the combined effects of the long-wavelength, strong disorder and the short-wavelength, weak periodic modulation present in the 2DES qualitatively explain the data.

AB - We report on magnetotransport of a two-dimensional electron system (2DES), located 32 nm below the surface, with a surface superlattice gate structure of periodicity 39 nm imposing a periodic modulation of its potential. For low Landau level fillings [Formula presented], the diagonal resistivity displays a rich pattern of fluctuations, even though the disorder dominates over the periodic modulation. Theoretical arguments based on the combined effects of the long-wavelength, strong disorder and the short-wavelength, weak periodic modulation present in the 2DES qualitatively explain the data.

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Laterally Modulated 2D Electron System in the Extreme Quantum Limit

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