Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2.

@article{Zhang2014DirectOO,
  title={Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2.},
  author={Yi Zhang and Tay-Rong Chang and Bo Zhou and Yu Cui and Hao Yan and Zhongkai Liu and Felix T Schmitt and J J Lee and Rob G Moore and Yulin Chen and Hsin Lin and Horng-Tay Jeng and Sung-Kwan Mo and Zahid Hussain and Arun Bansil and Zhi-Xun Shen},
  journal={Nature nanotechnology},
  year={2014},
  volume={9 2},
  pages={111-5}
}
Quantum systems in confined geometries are host to novel physical phenomena. Examples include quantum Hall systems in semiconductors and Dirac electrons in graphene. Interest in such systems has also been intensified by the recent discovery of a large enhancement in photoluminescence quantum efficiency and a potential route to valleytronics in atomically thin layers of transition metal dichalcogenides, MX2 (M = Mo, W; X = S, Se, Te), which are closely related to the indirect-to-direct bandgap… CONTINUE READING
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