Optical absorption and transmission in a molybdenum disulfide monolayer

Scientific paper - Original scientific paper

• Author: Zoran Rukelj; MBZ: 330912
• Author: Antonio Štrkalj
• Author: Vito Despoja; MBZ: 255255
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

Our recently proposed theoretical formulation [presented in D. Novko et al., Phys. Rev. B 93, 125413 (2016)] is used to study optical absorption and transmission in molybdenum disulfide (MoS2 ) monolayer as a function of incident photon energy and angle. The investigation is not focused on exploration of well-documented spin-orbit split excitons around optical absorption onset, but rather on the most intensive features in absorption spectrum in the visible and near-ultraviolet photon energy range (1.7–4 eV). It is shown that three most intensive peaks, at 2.7, 3.1, and 3.7 eV, result from transitions between Mo(d) and S(p) valence and conduction bands and that the character of their charge/current density fluctuations is intrinsically in plane, located in the molybdenum plane. This also implies that MoS2 monolayer is completely transparent when illuminated by grazing incidence p-polarized light. The validity of the presented results is supported by our effective two-band tight-binding model and finally by good agreement with some recent experimental results

• Keywords (english): molybdenum disulfide; optical absorption; transmission
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review B
• Numbering: vol. 94, no. 11, 115428
• p-ISSN: 2469-9969
• DOI: https://doi.org/10.1103/PhysRevB.94.115428
• URN:NBN: urn:nbn:hr:217:668545
• Publication: 2016
• Document URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.115428
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2016 American Physical Society. Received 18 May 2016; revised manuscript received 21 August 2016; published 21 September 2016.
• Created on: 2020-02-23 19:54:20