Title
Theoretical investigation of electron-hole complexes in anisotropic two-dimensional materials Theoretical investigation of electron-hole complexes in anisotropic two-dimensional materials
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Subject
Physics
Source (journal)
PHYSICAL REVIEW B
Volume/pages
93(2016) :11 , 5 p.
ISSN
2469-9950
Article Reference
115314
ISI
000372715700001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Trions and biexcitons in anisotropic two-dimensional materials are investigated within an effective mass theory. Explicit results are obtained for phosphorene and arsenene, materials that share features such as a direct quasiparticle gap and anisotropic conduction and valence bands. Trions are predicted to have remarkably high binding energies and an elongated electron-hole structure with a preference for alignment along the armchair direction, where the effective masses are lower. We find that biexciton binding energies are also notably large, especially for monolayer phosphorene, where they are found to be twice as large as those for typical monolayer transition metal dichalcogenides.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/795c02/133191.pdf
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