Eötvös Loránd UniversityUndergraduate Research Fellow
Jan. 2020 - Jan. 2021Title: Investigation of the transport effects of MoS2 based quantum dots Abstract:
The theory of electron transport processes taking place in mesoscopic systems, which I have examined, can be investigated with the so-called rate equation formalism. This allows us to theoretically test the quantum dots' transport processes which are defined on a few-layer transition-metal dichalcogenide (e.g. MoS2) systems. In such systems, quantum dots’ energy levels have three-fold degeneracy, the behaviour of electrons can be described by a three-fold symmetry which is rare in solid-state physics, resulting an interesting and novel behaviour in the transport processes. I have analytically examined the transport processes of single quantum dots controlled by the so-called Coulomb blockade with the help of rate equations, while the degeneracy of the energy level is 3- or m-fold. I have determined the dependency of system-specific quantities (transport current, current noise, Fano factor and conductivity) on the external parameters. As a next step, I examined the transport properties of double quantum dots in the case when the degeneracy of the energy levels is m-fold. In addition to determining the optimal charge configuration, I also analyzed the effects in the transport current due to the so-called Pauli blockade. Publications, presentations:
I have summarized my results and wrote a thesis to the Conference of Scientific Students' Associations (TDK). This thesis get 2nd prize in the Faculty's Conference and therefore I was able to take part in the National Conference.
Moreover, I was fortunate enough to present my results on the IV. Móra Interdisciplinary and the XXV. Bolyai College Conferences and wrote a Hungarian scientific paper in the Móra Akadémia: szakkollégiumi tanulmánykötet 10. collection of essays.