Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

H. Htoon; M. Furis; S. A. Crooker; S. Jeong; V. I. Klimov

doi:10.1103/PhysRevB.77.035328

Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

H. Htoon, M. Furis, S. A. Crooker, S. Jeong, V. I. Klimov

Los Alamos National Laboratory

Research output: Contribution to journal › Article

38 Citations (Scopus)

Abstract

We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.

Original language	English
Article number	035328
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.77.035328
Publication status	Published - Jan 22 2008

Fingerprint

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Htoon, H., Furis, M., Crooker, S. A., Jeong, S., & Klimov, V. I. (2008). Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots. Physical Review B - Condensed Matter and Materials Physics, 77(3), [035328]. https://doi.org/10.1103/PhysRevB.77.035328

@article{68c3778d23f6422db6399e7badc1e343,

title = "Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots",

abstract = "We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.",

author = "H. Htoon and M. Furis and Crooker, {S. A.} and S. Jeong and Klimov, {V. I.}",

year = "2008",

month = jan

day = "22",

doi = "10.1103/PhysRevB.77.035328",

language = "English",

volume = "77",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

AU - Htoon, H.

AU - Furis, M.

AU - Crooker, S. A.

AU - Jeong, S.

AU - Klimov, V. I.

PY - 2008/1/22

Y1 - 2008/1/22

N2 - We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.

AB - We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.

UR - http://www.scopus.com/inward/record.url?scp=38549136845&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38549136845&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.77.035328

DO - 10.1103/PhysRevB.77.035328

M3 - Article

AN - SCOPUS:38549136845

VL - 77

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 3

M1 - 035328

ER -

Access to Document

10.1103/PhysRevB.77.035328