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Contrast Dysl
Nastupno predavanje: Exciton-polaritons in layered van der Waals heterostructures Dr. sc. Vito Despoja
Institut za fiziku
07/07/2023/ at 11:00h
Institut za fiziku, predavaonica 1. krila i putem interneta

In the first part of the presentation, I will reflect on the latest achievements regarding the development of the theoretical formalism that describes the interaction of photons and electronic excitations in layered van der Waals crystals [1].  In the following I will talk about the results of that formalism which relate to; 1. the excitons intensity vs doping in black phosphorus [1]; 2. the interaction between cavity photons and excitons in transition-metal dichalcogenides (TMDs) and in fullerene (C60) thin films [2,3] and; 3. the interaction between  ‘free’  s(TE) photons and excitons  (formation of trapped photons) in  WS2/hBN and in C60  multilayers [4,5]. Finally, I will show the advantages and disadvantages of the current research and in which direction the research will continue. 


The spectral intensity of the s(TE) cavity photon n=1 in the (a) empty Al/Al2O3/vacuum/Al cavity (N = 0)  and in the cavity supporting C60 film of thicknesses (b) N = 5,  and (c) N = 25 molecular layers. Here, ωex1, ωex2  and ωex3 denote three of the most intensive π-excitons in C60.

[1] D. Novko, K. Lyon, D. J. Mowbray, and V. Despoja Phys. Rev. B 104, 115421 (2021)

[2] D. Novko and V. Despoja, Phys. Rev. Research 3, L032056 (2021)

[3] V. Despoja and D. Novko, Phys. Rev. B 106, 205401 (2022)

[4] V. Despoja and L. Marušić, Int. J. Mol. Sci. 23, 6943  (2022)

[5] N. Golenić and V. Despoja, Phys. Rev. B Lett., under review

Nastupno predavanje će se održati u predavaonici u 1. krilu Instituta.
Predsjednik Znanstvenog vijeća Instituta za fiziku
dr. sc. Damir Starešinić
IF Ⓒ 2017