Diffusion quantum Monte Carlo study of excitonic complexes in two-dimensional transition-metal dichalcogenides

@article{Mostaani2017DiffusionQM,
  title={Diffusion quantum Monte Carlo study of excitonic complexes in two-dimensional transition-metal dichalcogenides},
  author={Elaheh Mostaani and Marcin Szyniszewski and Cameron Alexander Hurd Price and Ryo Maezono and Mark Danovich and Ryan James Hunt and N D Drummond and Vladimir I. Fal’ko},
  journal={Physical Review B},
  year={2017},
  volume={96},
  pages={075431}
}
Excitonic effects play a particularly important role in the optoelectronic behavior of two dimensional semiconductors. To facilitate the interpretation of experimental photoabsorption and photoluminescence spectra we provide (i) statistically exact diffusion quantum Monte Carlo bindingenergy data for a Mott-Wannier model of (donor/acceptor-bound) excitons, trions, and biexcitons in two-dimensional semiconductors in which charges interact via the Keldysh potential, (ii) contact pair-distribution… Expand
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References

SHOWING 1-10 OF 73 REFERENCES
In-Plane Propagation of Light in Transition Metal Dichalcogenide Monolayers: Optical Selection Rules.
TLDR
Experimental results are in agreement with the optical selection rules deduced from group theory analysis, highlighting the key role played by the different symmetries of the conduction and valence bands split by the spin-orbit interaction. Expand
Monte Carlo Methods in Statistical Physics
This book provides an introduction to Monte Carlo simulations in classical statistical physics and is aimed both at students beginning work in the field and at more experienced researchers who wishExpand
"J."
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)Expand
APPL
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variablesExpand
Phys
  • Rev. B 92, 161404
  • 2015
A and V
Phys
  • Rev. B 92, 195305
  • 2015
Nat
  • Commun. 8, 15552
  • 2017
Phys
  • Rev. Lett. 113, 166801 (2014). 075431-23 E. MOSTAANI et al. PHYSICAL REVIEW B 96, 075431
  • 2017
Phys
  • Rev. Lett. 119, 047401
  • 2017
...
1
2
3
4
5
...