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Seminario: "Imaging 2D materials"

Imaging 2D materials Seminar-img
Amadeo L. Vázquez de Parga
Institución de origen
Departamento de Física de la Materia Condensada
Sala de Seminarios del departamento C03 planta 5

Imaging 2D materials

In the last few years our research has been focused on both the intrinsic properties of 2D materials and the possibility of modifying them at will. In this seminar I am going to summarize the results we have obtained with special emphasis on the most recent results. I will start by discussing the properties of graphene grown on transition metal surfaces and its subsequent functionalization [1]. I will show in detail how the growth of  graphene on Ru(0001) can be used to tune the electronic properties of the surface to enhance the photogeneration of highly reactive molecules on surfaces [2]. Surprisingly enough, graphene on Ru(0001) presents a catalytic activity for the formation of C-C bonds between molecules [3]. I will end the seminar by discussing a couple of results obtained in transition metal dichalcogenides. First, I will report on the growth of different crystallographic phases in TaTe2 and the delicate balance between Te-Te and Ta-Ta interactions that dictate the stability [4] and finally I demonstrate the formation of a Kondo lattice in a van der Waals heterostructure comprising a Mott insulator on a metallic substrate [5].

  1. Graphene grown on transition metal substrates: Versatile templates for organic molecules with new properties and structures”, C. Diaz et al., Surface Science Reports 77, 100575 (2022).
  2. Efficient photogeneration of nonacene on nanostructured graphene”, C. G. Ayani et al., Nanoscale Horizon 6, 744 (2021)
  3. Graphene catalyzes the reversible formation of a C–C bond between two molecules”, J.J. Navarro et al., Science Advances 4,eaau9366 (2018)
  4. Metastable polymorphic phases in monolayer TaTe2”, I. Di Bernardo et al., arXiv:2301.06445 (2023)
  5. Two-dimensional Kondo lattice in a TaS2 van der Waals heterostructure”. C.G. Ayani et al., arXiv:2205.11383 (2022)




(Sala de Seminarios del Departamento C03 planta 5)

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