Journal
PHYSICAL REVIEW B
Volume 93, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.93.125423
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Funding
- National Science Foundation (NSF) [Phy 1314463, IIA126117]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1314463] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1307368] Funding Source: National Science Foundation
- Office Of The Director
- Office Of Internatl Science &Engineering [1261117] Funding Source: National Science Foundation
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The stochastic variational method is applied to excitonic formations within semiconducting transition metal dichalcogenides using a correlated Gaussian basis. The energy and structure of two- to six-particle systems are investigated along with their dependence on the effective screening length of the two-dimensional Keldysh potential and the electron-hole effective mass ratio. Excited state biexcitons are shown to be bound, with binding energies of the L = 0 state showing good agreement with experimental measurements of biexciton binding energies. Ground and newly discussed excited state exciton-trions are predicted to be bound and their structures are investigated.
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