Reference : Temperature-dependent excitonic effects in the optical properties of single-layer MoS2
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/26872
Temperature-dependent excitonic effects in the optical properties of single-layer MoS2
English
Molina-Sanchez, Alejandro mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Palummo, Maurizia []
Marini, Andrea []
Wirtz, Ludger mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
2016
Physical Review. B : Condensed Matter
American Institute of Physics
93
155435
Yes (verified by ORBilu)
International
0163-1829
1095-3795
New York
NY
[en] The electron-phonon interaction alters substantially the conventional picture of the band structure. It also changes the properties of excitonic states, which are very pronounced in many 2D materials. Using many-body perturbation theory, the authors describe how the inclusion of temperature modifies the electronic bands of single-layer MoS2. Different bands and different regions in the Brillouin zone are affected in different ways by electron-phonon coupling. Using the temperature-broadened bands as input for the Bethe-Salpeter equation, the authors explain why, for the bound A and B excitons, the electron-phonon coupling changes mainly the position, and for the C exciton, only the width is affected by temperature, while the energy is rather constant.
University of Luxembourg: High Performance Computing - ULHPC
Fonds National de la Recherche - FnR ; University of Luxembourg - UL
Researchers ; Students
http://hdl.handle.net/10993/26872
10.1103/PhysRevB.93.155435
FnR ; FNR7731521 > Alejandro Molina-Sanchez > FAST-2DMAT > Modelling of carrier dynamics and ultra-fast spectroscopy in two-dimensional materials > 01/12/2014 > 31/03/2017 > 2014; FNR7490149 > Ludger Wirtz > NANOTMD > 20 Electric transport and superconductivity in Transition Metal Dichalcogenides nanolayers > 01/02/2014 > 31/01/2018 > 2014

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