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

@article{34bf783e69f441aca7ba69926dd246e6,

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

UR - https://www.scopus.com/pages/publications/33746444233

UR - https://www.scopus.com/pages/publications/33746444233#tab=citedBy

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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