Magnetic brightening of carbon nanotube photoluminescence through symmetry breaking

Jonah Shaver; Junichiro Kono; Oliver Portugall; Vojislav Krstic̀; Geert L.J.A. Rikken; Yuhei Miyauchi; Shigeo Maruyama; Vasili Perebeinos

doi:10.1021/nl070260f

Magnetic brightening of carbon nanotube photoluminescence through symmetry breaking

Jonah Shaver
, Junichiro Kono
, Oliver Portugall
, Vojislav Krstic̀
, Geert L.J.A. Rikken
, Yuhei Miyauchi
, Shigeo Maruyama
, Vasili Perebeinos

Department of Electrical Engineering

University at Buffalo

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

126 Scopus citations

Abstract

We report that symmetry breaking by a magnetic field can drastically increase the photoluminescence quantum yield of single-walled carbon nanotubes, by as much as a factor of 6, at low temperatures. To explain this we have developed a theoretical model based on field-dependent exciton band structure and the interplay of Coulomb interactions and the Aharonov-Bohm effect. This conclusively explains our data as the first experimental observation of dark excitons 5-10 meV below the bright excitons.

Original language	English
Pages (from-to)	1851-1855
Number of pages	5
Journal	Nano Letters
Volume	7
Issue number	7
DOIs	https://doi.org/10.1021/nl070260f
State	Published - Jul 2007

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10.1021/nl070260f

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abstract = "We report that symmetry breaking by a magnetic field can drastically increase the photoluminescence quantum yield of single-walled carbon nanotubes, by as much as a factor of 6, at low temperatures. To explain this we have developed a theoretical model based on field-dependent exciton band structure and the interplay of Coulomb interactions and the Aharonov-Bohm effect. This conclusively explains our data as the first experimental observation of dark excitons 5-10 meV below the bright excitons.",

author = "Jonah Shaver and Junichiro Kono and Oliver Portugall and Vojislav Krsti{\`c} and Rikken, \{Geert L.J.A.\} and Yuhei Miyauchi and Shigeo Maruyama and Vasili Perebeinos",

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T1 - Magnetic brightening of carbon nanotube photoluminescence through symmetry breaking

AU - Shaver, Jonah

AU - Kono, Junichiro

AU - Portugall, Oliver

AU - Krstic̀, Vojislav

AU - Rikken, Geert L.J.A.

AU - Miyauchi, Yuhei

AU - Maruyama, Shigeo

AU - Perebeinos, Vasili

PY - 2007/7

Y1 - 2007/7

N2 - We report that symmetry breaking by a magnetic field can drastically increase the photoluminescence quantum yield of single-walled carbon nanotubes, by as much as a factor of 6, at low temperatures. To explain this we have developed a theoretical model based on field-dependent exciton band structure and the interplay of Coulomb interactions and the Aharonov-Bohm effect. This conclusively explains our data as the first experimental observation of dark excitons 5-10 meV below the bright excitons.

AB - We report that symmetry breaking by a magnetic field can drastically increase the photoluminescence quantum yield of single-walled carbon nanotubes, by as much as a factor of 6, at low temperatures. To explain this we have developed a theoretical model based on field-dependent exciton band structure and the interplay of Coulomb interactions and the Aharonov-Bohm effect. This conclusively explains our data as the first experimental observation of dark excitons 5-10 meV below the bright excitons.

UR - https://www.scopus.com/pages/publications/34547562388

U2 - 10.1021/nl070260f

DO - 10.1021/nl070260f

M3 - Article

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SP - 1851

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JO - Nano Letters

JF - Nano Letters

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ER -

Magnetic brightening of carbon nanotube photoluminescence through symmetry breaking

Abstract

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