Coherent dynamics of localized excitons and trions in ZnO/(Zn,Mg)O quantum wells studied by photon echoes

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Coherent dynamics of localized excitons and trions in ZnO/(Zn,Mg)O quantum wells studied by photon echoes. / Solovev, I. A.; Poltavtsev, S. V.; Kapitonov, Yu V.; Akimov, I. A.; Sadofev, S.; Puls, J.; Yakovlev, D. R.; Bayer, M.

в: Physical Review B, Том 97, № 24, 245406, 11.06.2018.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{69e9cc917c78453f95df2dc2456b5fbd,

title = "Coherent dynamics of localized excitons and trions in ZnO/(Zn,Mg)O quantum wells studied by photon echoes",

abstract = "We study optically the coherent evolution of trions and excitons in a δ-doped 3.5-nm-thick ZnO/Zn0.91Mg0.09O multiple quantum well by means of time-resolved four-wave mixing at a temperature of 1.5 K. Employing spectrally narrow picosecond laser pulses in the χ(3) regime allows us to address differently localized trion and exciton states, thereby avoiding many-body interactions and excitation-induced dephasing. The signal in the form of photon echoes from the negatively charged A excitons (TA, trions) decays with coherence times varying from 8 up to 60 ps, depending on the trion energy: more strongly localized trions reveal longer coherence dynamics. The localized neutral excitons decay on the picosecond time scale with coherence times up to T2=4.5 ps. The coherent dynamics of the XB exciton and TB trion are very short (T2<1 ps), which is attributed to the fast energy relaxation from the trion and exciton B states to the respective A states. The trion population dynamics is characterized by the decay time T1, rising from 30 to 100 ps with decreasing trion energy.",

keywords = "ZNO, TEMPERATURE, DISORDER",

author = "Solovev, {I. A.} and Poltavtsev, {S. V.} and Kapitonov, {Yu V.} and Akimov, {I. A.} and S. Sadofev and J. Puls and Yakovlev, {D. R.} and M. Bayer",

year = "2018",

month = jun,

day = "11",

doi = "10.1103/PhysRevB.97.245406",

language = "English",

volume = "97",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "24",

}

RIS

TY - JOUR

T1 - Coherent dynamics of localized excitons and trions in ZnO/(Zn,Mg)O quantum wells studied by photon echoes

AU - Solovev, I. A.

AU - Poltavtsev, S. V.

AU - Kapitonov, Yu V.

AU - Akimov, I. A.

AU - Sadofev, S.

AU - Puls, J.

AU - Yakovlev, D. R.

AU - Bayer, M.

PY - 2018/6/11

Y1 - 2018/6/11

N2 - We study optically the coherent evolution of trions and excitons in a δ-doped 3.5-nm-thick ZnO/Zn0.91Mg0.09O multiple quantum well by means of time-resolved four-wave mixing at a temperature of 1.5 K. Employing spectrally narrow picosecond laser pulses in the χ(3) regime allows us to address differently localized trion and exciton states, thereby avoiding many-body interactions and excitation-induced dephasing. The signal in the form of photon echoes from the negatively charged A excitons (TA, trions) decays with coherence times varying from 8 up to 60 ps, depending on the trion energy: more strongly localized trions reveal longer coherence dynamics. The localized neutral excitons decay on the picosecond time scale with coherence times up to T2=4.5 ps. The coherent dynamics of the XB exciton and TB trion are very short (T2<1 ps), which is attributed to the fast energy relaxation from the trion and exciton B states to the respective A states. The trion population dynamics is characterized by the decay time T1, rising from 30 to 100 ps with decreasing trion energy.

AB - We study optically the coherent evolution of trions and excitons in a δ-doped 3.5-nm-thick ZnO/Zn0.91Mg0.09O multiple quantum well by means of time-resolved four-wave mixing at a temperature of 1.5 K. Employing spectrally narrow picosecond laser pulses in the χ(3) regime allows us to address differently localized trion and exciton states, thereby avoiding many-body interactions and excitation-induced dephasing. The signal in the form of photon echoes from the negatively charged A excitons (TA, trions) decays with coherence times varying from 8 up to 60 ps, depending on the trion energy: more strongly localized trions reveal longer coherence dynamics. The localized neutral excitons decay on the picosecond time scale with coherence times up to T2=4.5 ps. The coherent dynamics of the XB exciton and TB trion are very short (T2<1 ps), which is attributed to the fast energy relaxation from the trion and exciton B states to the respective A states. The trion population dynamics is characterized by the decay time T1, rising from 30 to 100 ps with decreasing trion energy.

KW - ZNO

KW - TEMPERATURE

KW - DISORDER

UR - http://www.scopus.com/inward/record.url?scp=85048345385&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/coherent-dynamics-localized-excitons-trions-znoznmgo-quantum-wells-studied-photon-echoes

U2 - 10.1103/PhysRevB.97.245406

DO - 10.1103/PhysRevB.97.245406

M3 - Article

AN - SCOPUS:85048345385

VL - 97

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 24

M1 - 245406

ER -

ID: 28203343