Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe

A. E. Nikolaenko; E. A. Chekhovich; M. N. Makhonin; I. W. Drouzas; A. B. Van'Kov; J. Skiba-Szymanska; M. S. Skolnick; P. Senellart; D. Martrou; A. Lemaître; A. I. Tartakovskii

doi:10.1103/PhysRevB.79.081303

Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe

A. E. Nikolaenko
, E. A. Chekhovich
, M. N. Makhonin
, I. W. Drouzas
, A. B. Van'Kov
, J. Skiba-Szymanska
, M. S. Skolnick
, P. Senellart
, D. Martrou
, A. Lemaître
, A. I. Tartakovskii

Department of Physics and Astronomy
The University of Sheffield
Centre de Nanosciences et de Nanotechnologies

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

26 Citations (Scopus)

Abstract

Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/ Alx Ga1-x As interface quantum dots by detecting the time dependence of the Overhauser shift in photoluminescence spectra. Long nuclear polarization decay times of ≈ 1 min have been found indicating inefficient nuclear spin diffusion from the GaAs dot into the surrounding AlGaAs matrix in externally applied magnetic field. A spin-diffusion coefficient two orders lower than that previously found in bulk GaAs is deduced.

Original language	English
Article number	081303
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.79.081303
Publication status	Published - 27 Feb 2009
Externally published	Yes

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10.1103/PhysRevB.79.081303

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Nikolaenko, A. E., Chekhovich, E. A., Makhonin, M. N., Drouzas, I. W., Van'Kov, A. B., Skiba-Szymanska, J., Skolnick, M. S., Senellart, P., Martrou, D., Lemaître, A., & Tartakovskii, A. I. (2009). Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe. Physical Review B - Condensed Matter and Materials Physics, 79(8), Article 081303. https://doi.org/10.1103/PhysRevB.79.081303

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title = "Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe",

abstract = "Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/ Alx Ga1-x As interface quantum dots by detecting the time dependence of the Overhauser shift in photoluminescence spectra. Long nuclear polarization decay times of ≈ 1 min have been found indicating inefficient nuclear spin diffusion from the GaAs dot into the surrounding AlGaAs matrix in externally applied magnetic field. A spin-diffusion coefficient two orders lower than that previously found in bulk GaAs is deduced.",

author = "Nikolaenko, \{A. E.\} and Chekhovich, \{E. A.\} and Makhonin, \{M. N.\} and Drouzas, \{I. W.\} and Van'Kov, \{A. B.\} and J. Skiba-Szymanska and Skolnick, \{M. S.\} and P. Senellart and D. Martrou and A. Lema{\^i}tre and Tartakovskii, \{A. I.\}",

year = "2009",

month = feb,

day = "27",

doi = "10.1103/PhysRevB.79.081303",

language = "English",

volume = "79",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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Nikolaenko, AE, Chekhovich, EA, Makhonin, MN, Drouzas, IW, Van'Kov, AB, Skiba-Szymanska, J, Skolnick, MS, Senellart, P, Martrou, D, Lemaître, A & Tartakovskii, AI 2009, 'Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe', Physical Review B - Condensed Matter and Materials Physics, vol. 79, no. 8, 081303. https://doi.org/10.1103/PhysRevB.79.081303

TY - JOUR

T1 - Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe

AU - Nikolaenko, A. E.

AU - Chekhovich, E. A.

AU - Makhonin, M. N.

AU - Drouzas, I. W.

AU - Van'Kov, A. B.

AU - Skiba-Szymanska, J.

AU - Skolnick, M. S.

AU - Senellart, P.

AU - Martrou, D.

AU - Lemaître, A.

AU - Tartakovskii, A. I.

PY - 2009/2/27

Y1 - 2009/2/27

N2 - Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/ Alx Ga1-x As interface quantum dots by detecting the time dependence of the Overhauser shift in photoluminescence spectra. Long nuclear polarization decay times of ≈ 1 min have been found indicating inefficient nuclear spin diffusion from the GaAs dot into the surrounding AlGaAs matrix in externally applied magnetic field. A spin-diffusion coefficient two orders lower than that previously found in bulk GaAs is deduced.

AB - Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/ Alx Ga1-x As interface quantum dots by detecting the time dependence of the Overhauser shift in photoluminescence spectra. Long nuclear polarization decay times of ≈ 1 min have been found indicating inefficient nuclear spin diffusion from the GaAs dot into the surrounding AlGaAs matrix in externally applied magnetic field. A spin-diffusion coefficient two orders lower than that previously found in bulk GaAs is deduced.

U2 - 10.1103/PhysRevB.79.081303

DO - 10.1103/PhysRevB.79.081303

M3 - Article

AN - SCOPUS:62349095623

SN - 1098-0121

VL - 79

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 8

M1 - 081303

ER -

Suppression of nuclear spin diffusion at a GaAs/ Alx Ga1-x As interface measured with a single quantum-dot nanoprobe

Abstract

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