Excitonic fine structure splitting in type-II quantum dots

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00080412" target="_blank" >RIV/00216224:14310/15:00080412 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/15:PU116631

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevB.92.195430" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.92.195430</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.92.195430" target="_blank" >10.1103/PhysRevB.92.195430</a>

Result language

angličtina

Original language name

Excitonic fine structure splitting in type-II quantum dots

Original language description

Excitonic fine structure splitting in quantum dots is closely related to the lateral shape of the wave functions. We have studied theoretically the fine structure splitting in InAs quantum dots with a type-II confinement imposed by a GaAsSb capping layer. We show that very small values of the fine structure splitting comparable with the natural linewidth of the excitonic transitions are achievable for realistic quantum dots despite the structural elongation and the piezoelectric field. For example, varying the capping layer thickness allows for a fine tuning of the splitting energy. The effect is explained by a strong sensitivity of the hole wave function to the quantum dot structure and a mutual compensation of the electron and hole anisotropies. Theoscillator strength of the excitonic transitions in the studied quantum dots is comparable to those with a type-I confinement which makes the dots attractive for quantum communication technology as emitters of polarization-entangled photo

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review B

ISSN

1098-0121

e-ISSN

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Volume of the periodical

92

Issue of the periodical within the volume

19

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

"nestránkováno"

UT code for WoS article

000365507900004

EID of the result in the Scopus database

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