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Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells. / Trifonov, A.V.; Khramtsov, E.S.; Kavokin, K.V.; Ignatiev, I.V.; Kavokin, A.V.; Efimov, Y.P.; Eliseev, S.A.; Shapochkin, P/Yu.; Bayer, M.

In: Physical Review Letters, Vol. 122, No. 14, 147401, 11.04.2019.

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

Harvard

Trifonov, AV, Khramtsov, ES, Kavokin, KV, Ignatiev, IV, Kavokin, AV, Efimov, YP, Eliseev, SA, Shapochkin, PY & Bayer, M 2019, 'Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells', Physical Review Letters, vol. 122, no. 14, 147401. https://doi.org/10.1103/PhysRevLett.122.147401

APA

Trifonov, A. V., Khramtsov, E. S., Kavokin, K. V., Ignatiev, I. V., Kavokin, A. V., Efimov, Y. P., Eliseev, S. A., Shapochkin, PY., & Bayer, M. (2019). Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells. Physical Review Letters, 122(14), [147401]. https://doi.org/10.1103/PhysRevLett.122.147401

Vancouver

Trifonov AV, Khramtsov ES, Kavokin KV, Ignatiev IV, Kavokin AV, Efimov YP et al. Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells. Physical Review Letters. 2019 Apr 11;122(14). 147401. https://doi.org/10.1103/PhysRevLett.122.147401

Author

Trifonov, A.V. ; Khramtsov, E.S. ; Kavokin, K.V. ; Ignatiev, I.V. ; Kavokin, A.V. ; Efimov, Y.P. ; Eliseev, S.A. ; Shapochkin, P/Yu. ; Bayer, M. / Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells. In: Physical Review Letters. 2019 ; Vol. 122, No. 14.

BibTeX

@article{e362966bf0f149458d2eb4909f60b774,
title = "Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells",
abstract = "We report on the experimental evidence for a nanosecond timescale spin memory based on nonradiative excitons with large in-plane wave vector. The effect manifests itself in magnetic-field-induced oscillations of the energy of the optically active (radiative) excitons. The oscillations detected by a spectrally resolved pump-probe technique applied to a GaAs/AlGaAs quantum well structure in a transverse magnetic field persist over a timescale, which is orders of magnitude longer than the characteristic decoherence time in the system. The effect is attributed to the spin-dependent electron-electron exchange interaction of the optically active and inactive excitons. The spin relaxation time of the electrons belonging to nonradiative excitons appears to be much longer than the hole spin relaxation time.",
keywords = "EXCITONS, Gallium arsenide, III-V semiconductors, Magnetic fields, Quantum theory, Relaxation time, Semiconducting gallium",
author = "A.V. Trifonov and E.S. Khramtsov and K.V. Kavokin and I.V. Ignatiev and A.V. Kavokin and Y.P. Efimov and S.A. Eliseev and P/Yu. Shapochkin and M. Bayer",
year = "2019",
month = apr,
day = "11",
doi = "10.1103/PhysRevLett.122.147401",
language = "English",
volume = "122",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "14",

}

RIS

TY - JOUR

T1 - Nanosecond Spin Coherence Time of Nonradiative Excitons in GaAs/AlGaAs Quantum Wells

AU - Trifonov, A.V.

AU - Khramtsov, E.S.

AU - Kavokin, K.V.

AU - Ignatiev, I.V.

AU - Kavokin, A.V.

AU - Efimov, Y.P.

AU - Eliseev, S.A.

AU - Shapochkin, P/Yu.

AU - Bayer, M.

PY - 2019/4/11

Y1 - 2019/4/11

N2 - We report on the experimental evidence for a nanosecond timescale spin memory based on nonradiative excitons with large in-plane wave vector. The effect manifests itself in magnetic-field-induced oscillations of the energy of the optically active (radiative) excitons. The oscillations detected by a spectrally resolved pump-probe technique applied to a GaAs/AlGaAs quantum well structure in a transverse magnetic field persist over a timescale, which is orders of magnitude longer than the characteristic decoherence time in the system. The effect is attributed to the spin-dependent electron-electron exchange interaction of the optically active and inactive excitons. The spin relaxation time of the electrons belonging to nonradiative excitons appears to be much longer than the hole spin relaxation time.

AB - We report on the experimental evidence for a nanosecond timescale spin memory based on nonradiative excitons with large in-plane wave vector. The effect manifests itself in magnetic-field-induced oscillations of the energy of the optically active (radiative) excitons. The oscillations detected by a spectrally resolved pump-probe technique applied to a GaAs/AlGaAs quantum well structure in a transverse magnetic field persist over a timescale, which is orders of magnitude longer than the characteristic decoherence time in the system. The effect is attributed to the spin-dependent electron-electron exchange interaction of the optically active and inactive excitons. The spin relaxation time of the electrons belonging to nonradiative excitons appears to be much longer than the hole spin relaxation time.

KW - EXCITONS

KW - Gallium arsenide

KW - III-V semiconductors

KW - Magnetic fields

KW - Quantum theory

KW - Relaxation time

KW - Semiconducting gallium

UR - http://www.scopus.com/inward/record.url?scp=85064377930&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/nanosecond-spin-coherence-time-nonradiative-excitons-gaasalgaas-quantum-wells

U2 - 10.1103/PhysRevLett.122.147401

DO - 10.1103/PhysRevLett.122.147401

M3 - Article

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 14

M1 - 147401

ER -

ID: 36156131