Hole spin precession and dephasing induced by nuclear hyperfine fields in CsPbBr3 and CsPb(Cl,Br)3 nanocrystals in a glass matrix

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Hole spin precession and dephasing induced by nuclear hyperfine fields in CsPbBr3 and CsPb(Cl,Br)3 nanocrystals in a glass matrix. / Кузнецова, Мария Сергеевна; Belykh, Vasilii; Zhukov, Evgeny A.; Yakovlev, Dmitri R.; Bayer, ‪Manfred; Колобкова, Елена; Меляков, Сергей.

In: Physical Review B-Condensed Matter, Vol. 110, No. 23, 235301, 02.12.2024.

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

Author

Кузнецова, Мария Сергеевна ; Belykh, Vasilii ; Zhukov, Evgeny A. ; Yakovlev, Dmitri R. ; Bayer, ‪Manfred ; Колобкова, Елена ; Меляков, Сергей. / Hole spin precession and dephasing induced by nuclear hyperfine fields in CsPbBr3 and CsPb(Cl,Br)3 nanocrystals in a glass matrix. In: Physical Review B-Condensed Matter. 2024 ; Vol. 110, No. 23.

BibTeX

@article{be9a30f584f64ba4b68f53810cba79b2,

title = "Hole spin precession and dephasing induced by nuclear hyperfine fields in CsPbBr3 and CsPb(Cl,Br)3 nanocrystals in a glass matrix",

abstract = "The coherent spin dynamics of holes are investigated for CsPbBr3 and CsPb(Cl,Br)3 perovskite nanocrystals in a glass matrix using the time-resolved Faraday rotation/ellipticity techniques. In an external magnetic field, pronounced Larmor spin precession of the hole spins is detected across a wide temperature range from 5 to 300 K. The hole Land{\'e} g-factor varies in the range of 0.8-1.5, in which it increases with increasing optical transition energy due to enhanced confinement in small nanocrystals. The hole spin dephasing time decreases from 1 ns to 50 ps in this temperature range. Nuclear spin fluctuations have a pronounced impact on the hole spin dynamics. The hyperfine interaction of the holes with nuclear spins modifies their spin polarization decay and induces their spin precession in zero external magnetic field. The results can be well described by the model developed in [I. A. Merkulov, Phys. Rev. B 65, 205309 (2002)0163-182910.1103/PhysRevB.65.205309], from which the hyperfine interaction energy of a hole spin with the nuclear spin fluctuation in the range of 2-5μeV is evaluated.",

author = "Кузнецова, {Мария Сергеевна} and Vasilii Belykh and Zhukov, {Evgeny A.} and Yakovlev, {Dmitri R.} and ‪Manfred Bayer and Елена Колобкова and Сергей Меляков",

year = "2024",

month = dec,

day = "2",

doi = "10.1103/physrevb.110.235301",

language = "English",

volume = "110",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "23",

}

RIS

TY - JOUR

T1 - Hole spin precession and dephasing induced by nuclear hyperfine fields in CsPbBr3 and CsPb(Cl,Br)3 nanocrystals in a glass matrix

AU - Кузнецова, Мария Сергеевна

AU - Belykh, Vasilii

AU - Zhukov, Evgeny A.

AU - Yakovlev, Dmitri R.

AU - Bayer, ‪Manfred

AU - Колобкова, Елена

AU - Меляков, Сергей

PY - 2024/12/2

Y1 - 2024/12/2

N2 - The coherent spin dynamics of holes are investigated for CsPbBr3 and CsPb(Cl,Br)3 perovskite nanocrystals in a glass matrix using the time-resolved Faraday rotation/ellipticity techniques. In an external magnetic field, pronounced Larmor spin precession of the hole spins is detected across a wide temperature range from 5 to 300 K. The hole Landé g-factor varies in the range of 0.8-1.5, in which it increases with increasing optical transition energy due to enhanced confinement in small nanocrystals. The hole spin dephasing time decreases from 1 ns to 50 ps in this temperature range. Nuclear spin fluctuations have a pronounced impact on the hole spin dynamics. The hyperfine interaction of the holes with nuclear spins modifies their spin polarization decay and induces their spin precession in zero external magnetic field. The results can be well described by the model developed in [I. A. Merkulov, Phys. Rev. B 65, 205309 (2002)0163-182910.1103/PhysRevB.65.205309], from which the hyperfine interaction energy of a hole spin with the nuclear spin fluctuation in the range of 2-5μeV is evaluated.

AB - The coherent spin dynamics of holes are investigated for CsPbBr3 and CsPb(Cl,Br)3 perovskite nanocrystals in a glass matrix using the time-resolved Faraday rotation/ellipticity techniques. In an external magnetic field, pronounced Larmor spin precession of the hole spins is detected across a wide temperature range from 5 to 300 K. The hole Landé g-factor varies in the range of 0.8-1.5, in which it increases with increasing optical transition energy due to enhanced confinement in small nanocrystals. The hole spin dephasing time decreases from 1 ns to 50 ps in this temperature range. Nuclear spin fluctuations have a pronounced impact on the hole spin dynamics. The hyperfine interaction of the holes with nuclear spins modifies their spin polarization decay and induces their spin precession in zero external magnetic field. The results can be well described by the model developed in [I. A. Merkulov, Phys. Rev. B 65, 205309 (2002)0163-182910.1103/PhysRevB.65.205309], from which the hyperfine interaction energy of a hole spin with the nuclear spin fluctuation in the range of 2-5μeV is evaluated.

UR - https://www.mendeley.com/catalogue/bf56e3a5-e797-3015-a7e4-f3b5f579fec6/

U2 - 10.1103/physrevb.110.235301

DO - 10.1103/physrevb.110.235301

M3 - Article

VL - 110

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 23

M1 - 235301

ER -

ID: 127413699