[seminar] Nastupno predavanje dr. sc. Vito Despoja u PETAK 07.07.2023. u 11:00h

[Damir Dominko]

**petak, 7. srpnja 2023., u 11:00 sati**

*Exciton-polaritons in layered van der Waals heterostructures***
**Dr. sc. ***Vito Despoja*
*Institute of Physics***

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 (C_60 ) thin films [2,3] and; 3. the interaction between  
'free'  s(TE) photons and excitons (formation of trapped photons) in  
WS_2 /hBN and in C_60 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/Al_2 O_3 /vacuum/Al cavity (N = 0)  and in the cavity supporting C_60 
film of thicknesses (b) N = 5,  and (c) N = 25 molecular layers. Here, 
ω_ex1 , ω_ex2   and ω_ex3 denote three of the most intensive π-excitons 
in C_60 .


[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.

Predavanje ćete moći pratiti i putem Zoom-a:

https://us06web.zoom.us/j/84831165364?pwd=THRSK1VmZDNjS3NBOGplODREYlFTUT09
Meeting ID: 848 3116 5364
Passcode: 098884

Predsjednik Znanstvenog vijeća Instituta za fiziku
dr. sc. Damir Starešinić





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