Project description DEENESFRITPL Topological structures based on chalcogenide superlattices Funded by the Marie Skłodowska-Curie Actions programme, the MagTopCSL project aims to investigate superlattices and heterostructures in chalcogenide materials to be used as platforms in topological devices. To this end, superlattices created by superimposing single and double layers of transition-metal dichalcogenides with periodic arrays of magnetic adatoms in various configurations will be studied. Moreover, the project will investigate multilayer heterostructures of group-II monochalcogenides. The interplay of the underlying electronic structures with the superstructure ingredients and configurations could lead to new Hall phases with highly altered properties. Show the project objective Hide the project objective Objective I will explore superlattices and heterostructures in chalcogenide materials as a platform for Berry-curvature engineering and topological devices. To this end, I will study superlattices created by superimposing single- and bilayers of transition-metal dichalcogenides with periodic arrays of magnetic adatoms in various configurations. Moreover, I will study multilayer heterostructures of group-II monochalcogenides with a compositional gradient across layers. The interplay of the underlying electronic structures with the ingredients and configurations of the superstructures is envisioned to lead to new phases with highly altered properties. I will study this interplay theoretically with a focus on three main objectives: (i) designing quantum anomalous Hall phases with large Chern numbers, which is highly relevant for electronic devices with low-power consumption; (ii) realizing topological superconductors as a platform for Majorana quasiparticles, which hold potential for exotic nonlocal phenomena and quantum computers; and (iii) realizing stable intertwined order in a 3D material with flat energy bands, a research direction I will pioneer with this project.I will model the proposed setups numerically using low-energy tight-binding models of the materials. The models will be constructed in close collaboration with experimentalists and DFT experts at the host institution MagTop within IF PAN. I will calculate Berry curvature, topological invariants, magnetic order, phase diagrams, and signatures of the emerging phases with regard to charge, spin, and thermal transport. The code used for the calculation of these quantities will be implemented as a software package, which I will utilize and develop during this project. My investigations will provide concrete guidelines for accompanying experimental studies at MagTop. In this way, the outcomes of my project will lay the foundation for tunable topological devices based on chalcogenide superlattices and heterostructures. Fields of science natural sciencescomputer and information sciencessoftwarenatural sciencesmathematicspure mathematicstopologyengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computersnatural sciencesphysical scienceselectromagnetism and electronicssuperconductivity Keywords Berry curvature Chern number topological insulator topological superconductor chalcogenides superlattice multilayer moiré superlattice magnetic impurities flat bands intertwined order Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Topic(s) MSCA-IF-2020 - Individual Fellowships Call for proposal H2020-MSCA-IF-2020 See other projects for this call Funding Scheme MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinator INSTYTUT FIZYKI POLSKIEJ AKADEMII NAUK Net EU contribution € 137 625,60 Address AL LOTNIKOW 32/46 02 668 Warszawa Poland See on map Region Makroregion województwo mazowieckie Warszawski stołeczny Miasto Warszawa Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 137 625,60
