Two-dimensional electron system with extremely low disorder

M. Shayegan; V. J. Goldman; M. Santos; T. Sajoto; L. Engel; D. C. Tsui

doi:10.1063/1.100306

Two-dimensional electron system with extremely low disorder

M. Shayegan, V. J. Goldman, M. Santos, T. Sajoto, L. Engel, D. C. Tsui

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25 Scopus citations

Abstract

We report on the growth of modulation-doped GaAs/Al_xGa _1-x As heterostructures with extremely low disorder by molecular beam epitaxy. In growing these structures we employed the atomic plane doping technique and ultrathick (>1000 Å) spacer layers with graded composition. The structures have mobilities (μ) on the order of 1×10⁶ cm²/V s (at 4.2 K) for areal densities (n _s) as low as 4×10¹⁰ cm^- ². Quantum transport measurements in these structures exhibit new fractional quantum Hall states and demonstrate their exceptionally high quality.

Original language	English (US)
Pages (from-to)	2080-2082
Number of pages	3
Journal	Applied Physics Letters
Volume	53
Issue number	21
DOIs	https://doi.org/10.1063/1.100306
State	Published - 1988

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.100306

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title = "Two-dimensional electron system with extremely low disorder",

abstract = "We report on the growth of modulation-doped GaAs/AlxGa 1-x As heterostructures with extremely low disorder by molecular beam epitaxy. In growing these structures we employed the atomic plane doping technique and ultrathick (>1000 {\AA}) spacer layers with graded composition. The structures have mobilities (μ) on the order of 1×106 cm2/V s (at 4.2 K) for areal densities (n s) as low as 4×1010 cm- 2. Quantum transport measurements in these structures exhibit new fractional quantum Hall states and demonstrate their exceptionally high quality.",

author = "M. Shayegan and Goldman, {V. J.} and M. Santos and T. Sajoto and L. Engel and Tsui, {D. C.}",

year = "1988",

doi = "10.1063/1.100306",

language = "English (US)",

volume = "53",

pages = "2080--2082",

journal = "Applied Physics Letters",

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T1 - Two-dimensional electron system with extremely low disorder

AU - Shayegan, M.

AU - Goldman, V. J.

AU - Santos, M.

AU - Sajoto, T.

AU - Engel, L.

AU - Tsui, D. C.

PY - 1988

Y1 - 1988

N2 - We report on the growth of modulation-doped GaAs/AlxGa 1-x As heterostructures with extremely low disorder by molecular beam epitaxy. In growing these structures we employed the atomic plane doping technique and ultrathick (>1000 Å) spacer layers with graded composition. The structures have mobilities (μ) on the order of 1×106 cm2/V s (at 4.2 K) for areal densities (n s) as low as 4×1010 cm- 2. Quantum transport measurements in these structures exhibit new fractional quantum Hall states and demonstrate their exceptionally high quality.

AB - We report on the growth of modulation-doped GaAs/AlxGa 1-x As heterostructures with extremely low disorder by molecular beam epitaxy. In growing these structures we employed the atomic plane doping technique and ultrathick (>1000 Å) spacer layers with graded composition. The structures have mobilities (μ) on the order of 1×106 cm2/V s (at 4.2 K) for areal densities (n s) as low as 4×1010 cm- 2. Quantum transport measurements in these structures exhibit new fractional quantum Hall states and demonstrate their exceptionally high quality.

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VL - 53

SP - 2080

EP - 2082

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 21

ER -

Two-dimensional electron system with extremely low disorder

Abstract

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