Project abstract

Recently, layered two-dimensional (2D) semiconducting materials have attracted a lot of attention due to their extraordinary electronic properties, representing the currently most active field of materials science research. We propose to focus on the computer design of spintronics properties of 2D materials via van der Waals proximity effects (vdW-PE) and application of strain. vdW-PE in 2D have already demonstrated the ability to modify/induce electronic, optical, magnetic, and spin properties. For example, a ferromagnet in proximity to nonmagnetic graphene can make graphene magnetic or a strong spin-orbit (SO) coupling material, such as WSe2, can induce giant SO coupling into another 2D material, without destroying its essential electronic properties. Besides the vdW-PE, the application of strain can also lead to modification of the electronic and SO properties of the material. It has been shown that in carbon nanotubes strain can significantly alter SO effects in electrons and holes, motivating by analogy the search for 2D materials that can be modulated by strain. For example, a sizable direct semiconducting gap and high carrier mobility make phosphorene very promising for replacing gapless graphene in future electronics. However, weak SO coupling does not make it useful for spintronics applications. Using sophisticated simulation techniques, we propose to study strain and vdW-PE effects in different 2D materials with the quest to enhance their spin-dependent properties. The project builds on strong applicant/host expertise complementarity and strong national and international collaborations. While computational, the project has strong links to experiments via international collaborations. In the short term, the project is expected to generate cutting-edge publications which in longer-term will be useful for integrating the designed 2D materials into spintronics circuits with novel transport, spin relaxation, and spin manipulation effects.

PUBLICATIONS

  1. Karol Szałowski, Marko Milivojević, Denis Kochan, and Martin Gmitra, Spin–orbit and exchange proximity couplings in graphene/1T-TaS2 heterostructure triggered by a charge density wave, 2D Materials 10, 025013 (2023)

  2. Marko Milivojević,  Martin Gmitra, Marcin Kurpas, Ivan Štich, and Jaroslav Fabian, Proximity-induced spin-orbit coupling in phosphorene on a WSe2 monolayer, Phys. Rev. B 108, 115311 (2023)

  3. Yongda Huang, Mumtaz Manzoor, Jan Brndiar, Marko Milivojević, and Ivan Štich, Straintronics with single-layer MoS2: A quantum Monte Carlo study, Phys. Rev. Research 6, 013007 (2024)

  4. Marko Milivojević, Martin Gmitra, Marcin Kurpas, Ivan Štich, and Jaroslav Fabian,  Proximity-enabled control of spin-orbit coupling in phosphorene symmetrically and asymmetrically encapsulated by WSe2 monolayers, Phys. Rev. B 109, 075305 (2024)

  5. Marko Milivojević, Martin Gmitra, Marcin Kurpas, Ivan Štich, and Jaroslav Fabian, Giant asymmetric proximity-induced spin–orbit coupling in twisted graphene/SnTe heterostructure, 2D Materials 11, 035036 (2024)
  6. Marko Milivojević, Marko Orozović, Silvia Picozzi, Martin Gmitra, Srđan Stavrić, Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4, 2D Materials 11, 035025 (2024)
  7. Marko Milivojević, Marcin Kurpas, Maedeh Rassekh, Dominik Legut, Martin Gmitra,  Hydrostatic pressure control of the spin-orbit proximity effect, spin relaxation, and thermoelectricity in a phosphorene-WSe2 heterostructure, Phys. Rev. B 110, 085306 (2024)

  8. Jozef Haniš, Marko Milivojević, Martin Gmitra, Distinguishing nodal and nonunitary superconductivity in quasiparticle interference of an Ising superconductor with Rashba spin-orbit coupling: an example of NbSe2, Phys. Rev. B 110, 104502 (2024)

  9. Marcin Kurpas, Marko Milivojević, Martin Gmitra, Armchair carbon nanotube on Pt and hBN/Pt: from strong metallic contact to coherent spin transport regime, arXiv:2409.01105 

CONFERENCES

1. 28th International Conference Applied Physics of Condensed Matter, Štrbské Pleso, Slovakia, June 21 - 23, 2023, Proximity Induced Spin-Orbit Coupling in Phosphorene on WSe2 Monolayer, Contributed talk

2. The 21st Symposium on Condensed Matter Physics, Belgrade, Serbia, June 26 - 30 2023, Proximity Induced Spin-Orbit Coupling In Phosphorene/WSe2 and WSe2 /Phosphorene /WSe2 van der Waals heterostructures, Contributed talk

3. IEEE 13th International Conference Nanomaterials: Applications & Properties, Bratislava, Slovakia, September 10-15, 2023,  Stacking Control of Spin-Orbit Proximity Effect in a WSe2-P-WSe2 Heterostructure, Contributed talk

4. DPG Meeting of the Condensed Matter Section in Berlin, Germany, March 17 - 22, 2024, Giant asymmetric proximity-induced spin–orbit coupling in twisted graphene/SnTe heterostructure, Contributed talk

5. 29th International Conference Applied Physics of Condensed Matter, Štrbské Pleso, Slovakia, June 19 - 21, 2024, Hydrostatic Pressure Control of the Spin-Orbit Proximity Effect and Spin Relaxation in a Phosphorene-WSe2 Heterostructure, Contributed talk

6. International Conference on Magnetism, Bologna, Italy, 30th June – 5th July 2024, Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4, Poster presentation

7. IEEE 14th International Conference Nanomaterials: Applications & Properties, Riga, Latvia, September 8 - 13, 2024, Canted antiferromagnetism in two-dimensional altermagnets, Contributed talk

COLLABORATORS

  1. Martin Gmitra, Institute of Physics, University Pavol Jozef Šafarik, Košice, Slovakia   
  2. Jaroslav Fabian, Faculty of Physics, University of Regensburg,  Regensburg, Germany
  3. Ivan Štich, Institute of Informatics, Slovak Academy of Sciences, Bratislava, Slovakia 
  4. Denis Kochan, Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia
  5. Karol Szałowski, Faculty of Physics, University of Łódź, Łódź, Poland       
  6. Marcin Kurpas, Institute of Physics, University of Silesia in Katowice, Chorzów, Poland
  7. Silvia Picozzi, CNR SPIN, Chiety, Italy
  8. Dominik Legut, VŠB - Technical University of Ostrava, Ostrava, Czech Republic
  9. Srđan Stavrić, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
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