Collective excitations in low-density 2D electron systems

M. A. Eriksson; A. Pinczuk; B. S. Dennis; C. F. Hirjibehedin; S. H. Simon; L. N. Pfeiffer; K. W. West

doi:10.1016/S1386-9477(99)00075-2

Collective excitations in low-density 2D electron systems

M. A. Eriksson, A. Pinczuk, B. S. Dennis, C. F. Hirjibehedin, S. H. Simon, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Conference article › peer-review

26 Scopus citations

Abstract

We report the observation of sharp plasmon and magnetoplasmon modes in ultra-low-density 2D electron systems. Well defined dispersions for the modes are observed at densities as low as 1.1×10⁹ cm^-2 and with excitation wave vectors as large as 1.2×10⁵ cm^-1. Interestingly, both modes are found to be more easily measured in low-density systems than in high-density systems. The strength of the light scattering cross-sections at low density suggests potential applications to the study of quantum phase transitions at large r_s.

Original language	English (US)
Pages (from-to)	165-168
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	6
Issue number	1
DOIs	https://doi.org/10.1016/S1386-9477(99)00075-2
State	Published - Feb 2000
Externally published	Yes
Event	13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can Duration: Aug 1 1999 → Aug 6 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(99)00075-2

Cite this

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title = "Collective excitations in low-density 2D electron systems",

abstract = "We report the observation of sharp plasmon and magnetoplasmon modes in ultra-low-density 2D electron systems. Well defined dispersions for the modes are observed at densities as low as 1.1×109 cm-2 and with excitation wave vectors as large as 1.2×105 cm-1. Interestingly, both modes are found to be more easily measured in low-density systems than in high-density systems. The strength of the light scattering cross-sections at low density suggests potential applications to the study of quantum phase transitions at large rs.",

author = "Eriksson, {M. A.} and A. Pinczuk and Dennis, {B. S.} and Hirjibehedin, {C. F.} and Simon, {S. H.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "2000",

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doi = "10.1016/S1386-9477(99)00075-2",

language = "English (US)",

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issn = "1386-9477",

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note = "13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) ; Conference date: 01-08-1999 Through 06-08-1999",

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TY - JOUR

T1 - Collective excitations in low-density 2D electron systems

AU - Eriksson, M. A.

AU - Pinczuk, A.

AU - Dennis, B. S.

AU - Hirjibehedin, C. F.

AU - Simon, S. H.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2000/2

Y1 - 2000/2

N2 - We report the observation of sharp plasmon and magnetoplasmon modes in ultra-low-density 2D electron systems. Well defined dispersions for the modes are observed at densities as low as 1.1×109 cm-2 and with excitation wave vectors as large as 1.2×105 cm-1. Interestingly, both modes are found to be more easily measured in low-density systems than in high-density systems. The strength of the light scattering cross-sections at low density suggests potential applications to the study of quantum phase transitions at large rs.

AB - We report the observation of sharp plasmon and magnetoplasmon modes in ultra-low-density 2D electron systems. Well defined dispersions for the modes are observed at densities as low as 1.1×109 cm-2 and with excitation wave vectors as large as 1.2×105 cm-1. Interestingly, both modes are found to be more easily measured in low-density systems than in high-density systems. The strength of the light scattering cross-sections at low density suggests potential applications to the study of quantum phase transitions at large rs.

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U2 - 10.1016/S1386-9477(99)00075-2

DO - 10.1016/S1386-9477(99)00075-2

M3 - Conference article

AN - SCOPUS:0034138826

SN - 1386-9477

VL - 6

SP - 165

EP - 168

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1

T2 - 13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13)

Y2 - 1 August 1999 through 6 August 1999

ER -

Collective excitations in low-density 2D electron systems

Abstract

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