Spin excitations in few-electrons AlGaAs/GaAs quantum dots probed by inelastic light scattering

César Pascual García; Vittorio Pellegrini; Aron Pinczuk; Massimo Rontani; Guido Goldoni; Elisa Molinari; Brian S. Dennis; Loren N. Pfeiffer; Ken W. West

doi:10.1016/j.physe.2006.03.079

Spin excitations in few-electrons AlGaAs/GaAs quantum dots probed by inelastic light scattering

César Pascual García, Vittorio Pellegrini, Aron Pinczuk, Massimo Rontani, Guido Goldoni, Elisa Molinari, Brian S. Dennis, Loren N. Pfeiffer, Ken W. West

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

3 Scopus citations

Abstract

We present recent studies of electronic excitations in nanofabricated AlGaAs/GaAs semiconductor quantum dots (QDs) by resonant inelastic light scattering. The resonant light scattering spectra are dominated by excitations from parity-allowed inter-shell transitions between Fock-Darwin levels. In QDs with very few electrons the resonant spectra are characterized by distinct charge and spin excitations that reveal the strong impact of both exchange and correlation effects. A sharp inter-shell spin excitation of the triplet spin QD state with four electrons is identified.

Original language	English (US)
Pages (from-to)	304-307
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	34
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physe.2006.03.079
State	Published - Aug 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

Keywords

Correlation
EP2DS-16
Nanosystems
Quantum dots

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10.1016/j.physe.2006.03.079

Cite this

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title = "Spin excitations in few-electrons AlGaAs/GaAs quantum dots probed by inelastic light scattering",

abstract = "We present recent studies of electronic excitations in nanofabricated AlGaAs/GaAs semiconductor quantum dots (QDs) by resonant inelastic light scattering. The resonant light scattering spectra are dominated by excitations from parity-allowed inter-shell transitions between Fock-Darwin levels. In QDs with very few electrons the resonant spectra are characterized by distinct charge and spin excitations that reveal the strong impact of both exchange and correlation effects. A sharp inter-shell spin excitation of the triplet spin QD state with four electrons is identified.",

keywords = "Correlation, EP2DS-16, Nanosystems, Quantum dots",

author = "Garc{\'i}a, {C{\'e}sar Pascual} and Vittorio Pellegrini and Aron Pinczuk and Massimo Rontani and Guido Goldoni and Elisa Molinari and Dennis, {Brian S.} and Pfeiffer, {Loren N.} and West, {Ken W.}",

year = "2006",

month = aug,

doi = "10.1016/j.physe.2006.03.079",

language = "English (US)",

volume = "34",

pages = "304--307",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Spin excitations in few-electrons AlGaAs/GaAs quantum dots probed by inelastic light scattering

AU - García, César Pascual

AU - Pellegrini, Vittorio

AU - Pinczuk, Aron

AU - Rontani, Massimo

AU - Goldoni, Guido

AU - Molinari, Elisa

AU - Dennis, Brian S.

AU - Pfeiffer, Loren N.

AU - West, Ken W.

PY - 2006/8

Y1 - 2006/8

N2 - We present recent studies of electronic excitations in nanofabricated AlGaAs/GaAs semiconductor quantum dots (QDs) by resonant inelastic light scattering. The resonant light scattering spectra are dominated by excitations from parity-allowed inter-shell transitions between Fock-Darwin levels. In QDs with very few electrons the resonant spectra are characterized by distinct charge and spin excitations that reveal the strong impact of both exchange and correlation effects. A sharp inter-shell spin excitation of the triplet spin QD state with four electrons is identified.

AB - We present recent studies of electronic excitations in nanofabricated AlGaAs/GaAs semiconductor quantum dots (QDs) by resonant inelastic light scattering. The resonant light scattering spectra are dominated by excitations from parity-allowed inter-shell transitions between Fock-Darwin levels. In QDs with very few electrons the resonant spectra are characterized by distinct charge and spin excitations that reveal the strong impact of both exchange and correlation effects. A sharp inter-shell spin excitation of the triplet spin QD state with four electrons is identified.

KW - Correlation

KW - EP2DS-16

KW - Nanosystems

KW - Quantum dots

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UR - http://www.scopus.com/inward/citedby.url?scp=33746444233&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2006.03.079

DO - 10.1016/j.physe.2006.03.079

M3 - Article

AN - SCOPUS:33746444233

SN - 1386-9477

VL - 34

SP - 304

EP - 307

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-2

ER -

Spin excitations in few-electrons AlGaAs/GaAs quantum dots probed by inelastic light scattering

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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