Coherent Spin Dynamics of Colloidal Nanocrystals

Yakovlev, D. R.; Rodina, A. V.; Shornikova, Elena V.; Golovatenko, A. A.; Bayer, Manfred

doi:10.1002/9783527837427.ch15

Cited by 2 publications

(1 citation statement)

References 93 publications

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“…In the case when the cooling from 300 K is performed in darkness and relatively fast (during about 20 min), the hole signal does not appear, and only the electron spin precession is seen at T = 4 K, Figure 2e. Obviously, photocharging of NCs either by electrons or by holes is responsible for this phenomenon [43]. Note that time-resolved FR is a very suitable technique for identifying the type of the resident carriers in colloidal NCs by measuring the Larmor precession of the specific carrier.…”

Section: Time-resolved Faraday Rotationmentioning

confidence: 99%

Coherent Spin Dynamics of Electrons in CsPbBr3 Perovskite Nanocrystals at Room Temperature

Meliakov,

Zhukov,

Kulebyakina

et al. 2023

Nanomaterials

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Coherent spin dynamics of charge carriers in CsPbBr3 perovskite nanocrystals are studied in a temperature range of 4–300 K and in magnetic fields of up to 500 mT using time-resolved pump-probe Faraday rotation and differential transmission techniques. We detect electron spin Larmor precession in the entire temperature range. At temperatures below 50 K, hole spin precession is also observed. The temperature dependences of spin-related parameters, such as Landè g-factor and spin dephasing time are measured and analyzed. The electron g-factor increases with growing temperature, which can not be described by the temperature-induced band gap renormalization. We find that photocharging of the nanocrystals with either electrons or holes depends on the sample cooling regime, namely the cooling rate and illumination conditions. The type of the charge carrier provided by the photocharging can be identified via the carrier spin Larmor precession.

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Section: Time-resolved Faraday Rotationmentioning

confidence: 99%

Coherent Spin Dynamics of Electrons in CsPbBr3 Perovskite Nanocrystals at Room Temperature

Meliakov,

Zhukov,

Kulebyakina

et al. 2023

Nanomaterials

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Лауреаты Нобелевской Премии По Химии 2023 Года — Алексей Екимов, Луис Брюс И Мунги Бавенди, "Природа"

Родина

2023

Priroda

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В 2023 г. Нобелевская премия в области химии присуждена Алексею Екимову, Луису Брюсу и Мунги Бавенди за работы 80-х — начала 90-х годов прошлого века, ставшие фундаментом физики и технологии нульмерных структур — квантовых точек. Квантовыми точками называют кристаллы полупроводников нанометрового размера (нанокристаллы), свойства которых определяются эффектом размерного квантования. В настоящее время квантовые точки широко применяются в целом ряде областей: в оптоэлектронике, фотовольтаике, биологии и медицине, а их синтез продолжает совершенствоваться.

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Coherent Spin Dynamics of Colloidal Nanocrystals

Cited by 2 publications

References 93 publications

Coherent Spin Dynamics of Electrons in CsPbBr3 Perovskite Nanocrystals at Room Temperature

Coherent Spin Dynamics of Electrons in CsPbBr3 Perovskite Nanocrystals at Room Temperature

Лауреаты Нобелевской Премии По Химии 2023 Года — Алексей Екимов, Луис Брюс И Мунги Бавенди, "Природа"

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