Quantum confined Rydberg excitons in Cu2O nanoparticles

被引：17

作者：

Orfanakis, Konstantinos ^{[1
]}

Rajendran, Sai Kiran ^{[1
]}

Ohadi, Hamid ^{[1
]}

Zielinska-Raczynska, Sylwia ^{[2
]}

Czajkowski, Gerard ^{[2
]}

Karpinski, Karol ^{[2
]}

Ziemkiewicz, David ^{[2
]}

机构：

[1] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

[2] UTP Univ Sci & Technol, PL-85796 Bydgoszcz, Poland

来源：

PHYSICAL REVIEW B | 2021年 / 103卷 / 24期

基金：

英国工程与自然科学研究理事会;

关键词：

SIZE QUANTIZATION; SEMICONDUCTOR; ABSORPTION; MICROCRYSTALS; CRYSTAL;

D O I：

10.1103/PhysRevB.103.245426

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in natural nanoparticles of Cu2O. We resolve up to the principal quantum number n = 12 in a bulk Cu2O crystal and up to n = 6 in nanoparticles extracted from the same crystal. The exciton transitions in nanoparticles are broadened and their oscillator strengths decrease as alpha n(-4) compared to those in the bulk (decreasing as alpha n(-3)). We explain our results by including the effect of quantum confinement of exciton states in the nanoparticles. Our results provide an understanding of the physics of Cu2O Rydberg excitons in confined dimensions.

引用

页数：6

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