CAP

Participants
Institutions
  • WG Leitenstorfer (Experimentalphysik mit SP Ultrakurzzeitphysik und Quantenoptik)
Publications
    Trushin, Maxim; Goerbig, Mark Oliver; Belzig, Wolfgang (2016): Optical absorption by Dirac excitons in single-layer transition-metal dichalcogenides Physical Review B. 2016, 94(4), 041301. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.94.041301

Optical absorption by Dirac excitons in single-layer transition-metal dichalcogenides

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We develop an analytically solvable model able to qualitatively explain nonhydrogenic exciton spectra observed recently in two-dimensional (2D) semiconducting transition-metal dichalcogenides. Our exciton Hamiltonian explicitly includes additional angular momentum associated with the pseudospin degree of freedom unavoidable in 2D semiconductingmaterials with honeycomb structure.We claim that this is the key ingredient for understanding the nonhydrogenic exciton spectra that was missing so far.

Origin (projects)

Funding sources
Name Finanzierungstyp Kategorie Project no.
Exzellenzinitiative third-party funds research funding program 653/13
Further information
Period: since 30.09.2017