Optical properties of a tip-induced quantum dot

M. Kemerink; K. Sauthoff; P.M. Koenraad; J.W. Gerritsen; H. Kempen, van; V. Fomin; J.H. Wolter; J.T. Devreese

doi:10.1007/s003390100668

Optical properties of a tip-induced quantum dot

M. Kemerink
, K. Sauthoff
, P.M. Koenraad
, J.W. Gerritsen
, H. Kempen, van
, V. Fomin
, J.H. Wolter
, J.T. Devreese

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

5 Citations (Scopus)

Abstract

We have performed optical spectroscopy measurements on a STM-tip-induced quantum dot in a GaAs layer. The dominant confinement in the (hole) quantum dot is found to be in the direction parallel to the tip axis. Electron confinement is achieved by a sub-surface AlGaAs barrier. Current-dependent measurements indicate that many-body interactions can cause spectral blueshifts up to 75 meV for a tunneling current of 10 nA. Consequently, a full treatment of the many-body problem is required for an accurate description of this type of system.

Original language	English
Pages (from-to)	S239-S242
Journal	Applied Physics A: Materials Science & Processing
Volume	72
Issue number	Suppl.2
DOIs	https://doi.org/10.1007/s003390100668
Publication status	Published - 2001

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abstract = "We have performed optical spectroscopy measurements on a STM-tip-induced quantum dot in a GaAs layer. The dominant confinement in the (hole) quantum dot is found to be in the direction parallel to the tip axis. Electron confinement is achieved by a sub-surface AlGaAs barrier. Current-dependent measurements indicate that many-body interactions can cause spectral blueshifts up to 75 meV for a tunneling current of 10 nA. Consequently, a full treatment of the many-body problem is required for an accurate description of this type of system.",

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AU - Kemerink, M.

AU - Sauthoff, K.

AU - Koenraad, P.M.

AU - Gerritsen, J.W.

AU - Kempen, van, H.

AU - Fomin, V.

AU - Wolter, J.H.

AU - Devreese, J.T.

PY - 2001

Y1 - 2001

N2 - We have performed optical spectroscopy measurements on a STM-tip-induced quantum dot in a GaAs layer. The dominant confinement in the (hole) quantum dot is found to be in the direction parallel to the tip axis. Electron confinement is achieved by a sub-surface AlGaAs barrier. Current-dependent measurements indicate that many-body interactions can cause spectral blueshifts up to 75 meV for a tunneling current of 10 nA. Consequently, a full treatment of the many-body problem is required for an accurate description of this type of system.

AB - We have performed optical spectroscopy measurements on a STM-tip-induced quantum dot in a GaAs layer. The dominant confinement in the (hole) quantum dot is found to be in the direction parallel to the tip axis. Electron confinement is achieved by a sub-surface AlGaAs barrier. Current-dependent measurements indicate that many-body interactions can cause spectral blueshifts up to 75 meV for a tunneling current of 10 nA. Consequently, a full treatment of the many-body problem is required for an accurate description of this type of system.

U2 - 10.1007/s003390100668

DO - 10.1007/s003390100668

M3 - Article

SN - 0947-8396

VL - 72

SP - S239-S242

JO - Applied Physics A: Materials Science & Processing

JF - Applied Physics A: Materials Science & Processing

IS - Suppl.2

ER -

Optical properties of a tip-induced quantum dot

Abstract

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