News from the group of theoretical physics

11. 05. 2023
Stretching a single molecule

In contrast to silicon-based transistors, single-molecule junctions can be gated by simple mechanical means: by either stretching or pulling the electrodes. The detailed impact of gating on the conductance has to be evaluated by using quantum theory. Our team has paired with an experimental lab to understand what is going on when you stretch a single molecule.

31. 03. 2023
Revolutionizing Electronics: Innovative Way to Control Excitons in Semiconductors

Scientists from our faculty have made a groundbreaking discovery in the field of optoelectronics. Our research demonstrates a new way to manipulate excitons in semiconductors using coherent optical interactions, opening the door for ultrafast valleytronics operating at multiterahertz frequencies.

15. 02. 2023
Exciting bilayers of MoSe2

An electron and a hole can create bound states known as excitons. When these states occur in an atomically thin semiconducter layer, they behave like two-dimensional hydrogen atoms. Well, not exactly. Find more details in our recent paper.

03. 01. 2023
Physics in the valleys

Materials called transition metal dichalcogenides can hold electrons in band minimas called valleys. We have investigated the possibility to control these electronic states by light pulses. Find the thorough theoretical analysis in our recent paper!

02. 12. 2022
Dark excitons lighten up in a magnetic field

The luminescence spectrum of excitons in ReS2 resembles the transitions in a free atom (Rydberg series), except that some transitions are missing, they are “dark”. This is due to interactions, as detailed by the theoretical calculations of A. Slobodenyuk, and verified by measurements in magnetic fields. Find more details in our recent paper.

11. 11. 2022
We welcome a new member of our group

We welcome Dr. Athanasios Koliogiorgos and wish him a successful post-doctoctoral stay

19. 07. 2022
Dark excitons lighten up in a magnetic field

The luminescence spectrum of excitons in ReS2 resembles the transitions in a free atom (Rydberg series), except that some transitions are missing, they are “dark”.