The role of electron-phonon interactions on the coherence lifetime of monolayer transition metal dichalcogenides

C. E. Stevens; P. Dey; J. Paul; Z. Wang; H. Zhang; A. H. Romero; J. Shan; D. J. Hilton; D. Karaiskaj

doi:10.1016/j.ssc.2017.08.017

The role of electron-phonon interactions on the coherence lifetime of monolayer transition metal dichalcogenides

C. E. Stevens, P. Dey, J. Paul, Z. Wang, H. Zhang, A. H. Romero, J. Shan, D. J. Hilton, D. Karaiskaj

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

2 Scopus citations

Abstract

We investigate the excitonic dephasing of transition metal dichalcogenides, namely MoS₂, MoSe₂ and WSe₂ atomic monolayer thick and bulk crystals, in order to understand the factors that determine the optical coherence in these materials. Coherent nonlinear optical spectroscopy, temperature dependent absorption combined with theoretical calculations of the phonon spectra, reveal the important role electron-phonon interactions plat in dephasing process. The temperature dependence of the electronic band gap and the excitonic linewidth combined with ‘ab initio’ calculations of the phonon energies and the phonon density of state reveal strong interaction with the E′ and E″ phonon modes.

Original language	English (US)
Pages (from-to)	30-33
Number of pages	4
Journal	Solid State Communications
Volume	266
DOIs	https://doi.org/10.1016/j.ssc.2017.08.017
State	Published - Oct 2017

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/j.ssc.2017.08.017

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title = "The role of electron-phonon interactions on the coherence lifetime of monolayer transition metal dichalcogenides",

abstract = "We investigate the excitonic dephasing of transition metal dichalcogenides, namely MoS2, MoSe2 and WSe2 atomic monolayer thick and bulk crystals, in order to understand the factors that determine the optical coherence in these materials. Coherent nonlinear optical spectroscopy, temperature dependent absorption combined with theoretical calculations of the phonon spectra, reveal the important role electron-phonon interactions plat in dephasing process. The temperature dependence of the electronic band gap and the excitonic linewidth combined with {\textquoteleft}ab initio{\textquoteright} calculations of the phonon energies and the phonon density of state reveal strong interaction with the E′ and E″ phonon modes.",

author = "Stevens, {C. E.} and P. Dey and J. Paul and Z. Wang and H. Zhang and Romero, {A. H.} and J. Shan and Hilton, {D. J.} and D. Karaiskaj",

note = "Funding Information: The research at USF, Penn. State, and UAB is supported by the U.S. Department of Energy , Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award DE-SC0012635 . AHR acknowledges the support from the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. ACI-1053575 , the support of NSF under project 1434897 and the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research under contract 54075-ND10 . Publisher Copyright: {\textcopyright} 2017",

year = "2017",

month = oct,

doi = "10.1016/j.ssc.2017.08.017",

language = "English (US)",

volume = "266",

pages = "30--33",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

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T1 - The role of electron-phonon interactions on the coherence lifetime of monolayer transition metal dichalcogenides

AU - Stevens, C. E.

AU - Dey, P.

AU - Paul, J.

AU - Wang, Z.

AU - Zhang, H.

AU - Romero, A. H.

AU - Shan, J.

AU - Hilton, D. J.

AU - Karaiskaj, D.

N1 - Funding Information: The research at USF, Penn. State, and UAB is supported by the U.S. Department of Energy , Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award DE-SC0012635 . AHR acknowledges the support from the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. ACI-1053575 , the support of NSF under project 1434897 and the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research under contract 54075-ND10 . Publisher Copyright: © 2017

PY - 2017/10

Y1 - 2017/10

N2 - We investigate the excitonic dephasing of transition metal dichalcogenides, namely MoS2, MoSe2 and WSe2 atomic monolayer thick and bulk crystals, in order to understand the factors that determine the optical coherence in these materials. Coherent nonlinear optical spectroscopy, temperature dependent absorption combined with theoretical calculations of the phonon spectra, reveal the important role electron-phonon interactions plat in dephasing process. The temperature dependence of the electronic band gap and the excitonic linewidth combined with ‘ab initio’ calculations of the phonon energies and the phonon density of state reveal strong interaction with the E′ and E″ phonon modes.

AB - We investigate the excitonic dephasing of transition metal dichalcogenides, namely MoS2, MoSe2 and WSe2 atomic monolayer thick and bulk crystals, in order to understand the factors that determine the optical coherence in these materials. Coherent nonlinear optical spectroscopy, temperature dependent absorption combined with theoretical calculations of the phonon spectra, reveal the important role electron-phonon interactions plat in dephasing process. The temperature dependence of the electronic band gap and the excitonic linewidth combined with ‘ab initio’ calculations of the phonon energies and the phonon density of state reveal strong interaction with the E′ and E″ phonon modes.

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EP - 33

JO - Solid State Communications

JF - Solid State Communications

ER -

The role of electron-phonon interactions on the coherence lifetime of monolayer transition metal dichalcogenides

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