TY - JOUR
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.
PY - 2017/8/15
Y1 - 2017/8/15
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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U2 - 10.1088/1742-6596/864/1/012035
DO - 10.1088/1742-6596/864/1/012035
M3 - Conference article
AN - SCOPUS:85028764793
SN - 1742-6588
VL - 864
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012035
T2 - 33rd International Conference on the Physics of Semiconductors, ICPS 2016
Y2 - 31 July 2016 through 5 August 2016
ER -