@inproceedings{a06639a1b8dd4e80ad42982c2461cbda,
title = "Helicity resolved ultrafast pump-probe spectroscopy of monolayer molybdenum disulphide",
abstract = "We investigate the valley related carrier dynamics in monolayer MoS2 using helicity resolved non-degenerate ultrafast pump-probe spectroscopy at the vicinity of the high-symmetry K point under the temperature down to 78 K. Monolayer MoS2 shows remarkable transient reflection signals, in stark contrast to bilayer and bulk MoS2 due to the enhancement of many-body effect at reduced dimensionality. The helicity resolved ultrafast time-resolved result shows that the valley polarization is preserved for only several ps before scattering process makes it undistinguishable. We suggest that the dynamical degradation of valley polarization is attributable primarily to the exciton trapping by defect states in the exfoliated MoS2 samples.",
keywords = "Disorder, Molybdenum disulphide, Ultrafast spectroscopy, Valley carrier dynamics",
author = "Jun Qiu and Qinsheng Wang and Shaofeng Ge and Yanxin Ji and Dong Sun",
note = "Publisher Copyright: {\textcopyright} 2014 SPIE.; Ultrafast Nonlinear Imaging and Spectroscopy II ; Conference date: 17-08-2014 Through 18-08-2014",
year = "2014",
doi = "10.1117/12.2063225",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Khoo, {Iam Choon} and Zhiwen Liu and Demetri Psaltis",
booktitle = "Ultrafast Nonlinear Imaging and Spectroscopy II",
address = "United States",
}