Date: Wednesday 19th of May 2021, 13:30.
Location: Online (MS Teams meeting).

‘Graphene nanoribbons as building blocks for nanodevices’

by Dr Vasil Saroka, Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway.

Abstract:

Graphene nanoribbons are nanometer size strips of graphene that are considered as building-block of future carbon opto-electronic and spintronics devices. The past decade has proven them can be produced in high variety and with atomic precision quality. This makes important revealing their structure-function relations required in atomically precise device designs. In this seminar, I am going to present an overview of my research on graphene nanoribbons, their electronic and optical properties studied within the tight-binding analytical and first principles numerical methods, with some consequences for their absorption spectroscopy [1,2,3]. Also, I will present some new ideas moving towards carbon based spin qubits.

1. R. B. Payod, D. Grassano, G. N. C. Santos, D. I. Levshov, O. Pulci, and V. A. Saroka, “2N+4-rule and an atlas of bulk optical resonances of zigzag graphene nanoribbons”, Nat. Commun. 11, 82 (2020).
2. V. A. Saroka, M. V. Shuba and M. E. Portnoi, “Optical selection rules of zigzag graphene nanoribbons”, Phys. Rev. B 95, 155438 (2017).
3. V. A. Saroka, K. G. Batrakov, V. A. Demin, and L. A. Chernozatonskii, “Band gaps in jagged and straight graphene nanoribbons tunable by an external electric field”, J. Phys.: Condens. Matter 27, 145305 (2015).