We are focused on selected aspects of fundamental solid-state physics and magnetism, which may support the main concept of spintronics: efficient control of the spin state and its utilization on equal footing with quasiparticle charge. In principle, we focus on such subfields of spin electronics as spin-orbitronics, magnonics, and antiferromagnetic spintronics, where the symmetries and topological properties of the systems play an essential role. We wish to focus on novel materials that may serve as a platform for phenomena where the topological nature of quasiparticle states plays an essential role and which allow for a variety of spin-to-charge interconversion phenomena. We wish to combine altogether the spin and valley degrees of freedom with the symmetries and topological properties of the system to describe and propose phenomena that enable us to work out new protocols for electronic and logic devices. Additionally, we want to study the presence of some emergent phenomena in low dimensional quantum magnetic systems, like magnon Bose-Einestein condensation and spin superfluidity, which are important from both academic and application points of view. Another important question that we address in our research is the effect of many-body interactions in low dimensional magnetic quantum materials.
Central questions:
- How to modify the topological properties of 2D systems by external fields and forces?
- How to exploit emergent phenomena observed in 2D crystals and interfaces in the new generation of spintronic devices?
- How to describe recently discussed non-linear effects in quantum materials (non-linear system response, non-linear interactions)?
- How to achieve the low-dissipation and long-range spin transport and possibility of supermagnonics phenomena in novel low-dimensional magnetic systems?
- How important are many-body effects in these low-dimensional quantum materials?
Tasks:
- Work Package A: Transport through hybrid structures consisted of Quantum Materials. Role of symmetry, external fields, and geometry
- Task 1: Examination of model Hamiltonians describing topologically-nontrivial electronic states in selected 2D quantum materials for possible manipulation of quasi-particles degrees of freedom by external fields.
- Task 2: Theoretical description of non-linear phenomena induced by the topologically nontrivial band structure in selected 2D systems.
- Task 3: Transport through hybrid structures consisted of Quantum Materials. Role of symmetry, external fields, and geometry
- Task 4: Calculation of magneto-optical effects which may be used as a powerful tool to examine the structure and symmetry-related phenomena in magnetic materials
- Work Package B: Magnonics and Spin Transport in Magnetically Ordered Systems
- Task 1: Calculation of the magnetoresistance of 1D domain walls and 2D skyrmions in metallic AFM systems.
- Task 2: Micromagnetic simulation of magnon BEC in AFM systems. Investigation of stability of BEC phase. Finding equations of motion for magnon superfluids.
- Task 3: Developing a theory for magnon-plasmon hybridization and application of that in ultrafast spin-current generation and spin pumping
- Task 4: Unified theory of transport mediated by quasiparticles with topologically non-trivial energy dispersions
