Department of Complex Matter
Jamova cesta 39, 1000 Ljubljana, Slovenia

Dynamics of Quantum matter

We explore non-equilibrium many-body dynamics in quantum systems that experience symmetry-breaking, topological, or jamming transitions. These systems encompass superconductors, charge-density wave, and magnetic materials.

Experimental Soft Matter Physics

The research is conducted within the “Light and Matter” research program. The interaction of light with matter is one of the most important fields of physics and optical processes are indispensable in many branches of modern industry.

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April 11, 2024
Dr. Dragan Mihailović, a leading researcher in the field of quantum systems at the Jožef Stefan Institute (IJS), has successfully won the third project of the European Research Council (ERC), HIMMS (High-Resolution ...
Home / Events / F7 Seminar “Exotic electronics phases in graphene tuned by a quantum superlatt…

F7 Seminar “Exotic electronics phases in graphene tuned by a quantum superlattice”

January 11, 2024 , F5 seminar room

Prof. Zheng Vitto Han, Institute of Opto-Electronics, Shanxi University, Taiyuan, China

In this talk, we will introduce a model system: synergetic interplay between two layers of 2D interacting interacted electronic system, and the emerging phenomena.

Taking the van der Waal hybrid system of graphene/CrOCl for example, our theoretical considerations suggest that, due to e-e interactions, the electrons filled (charge transferred from graphene with the help of vertical electrical field) in the surface state (mainly in the Cr-3d orbital in CrOCl, which is about 0.7 nm below graphene) of CrOCl can spontaneously form a long wavelength order, i.e., it undergoes a Wigner crystallization. Such a long wavelength charge order can act as a quantum superlattice, which exerts a moiré-like super potential to the graphene placed on top of it, and further leads to a series of exotic interaction-driven phenomena, including unusually robust quantum Hall phase [1], and exciton-enhanced correlated insulator [2].

Our findings suggest that the paradigm of charge transfer can play key roles in the engineering of quantum electronic states, when the e-e interactions are taking effects. And, according to theory, such a quantum superlattice may be a universal phenomenon in many layered materials [3], and enriched physical phenomena are yet to be discovered.