12.12.2019

From metallization of hydrogen to unconventional superconductivity. The role of electronic correlations in selected physical systems


Academic Centre for Materials and Nanotechnology AGH UST invites for a seminar that will be held on 12th December, 2019, at 2.00 pm.

A lecture titled “From metallization of hydrogen to unconventional superconductivity. The role of electronic correlations in selected physical systems” will be given by PhD Andrzej Biborski from Academic Centre for Materials and Nanotechnology AGH UST.

Venue: Academic Centre for Materials and Nanotechnology AGH UST (Kawiory 30 Street, building D-16, auditorium room 1.02A)

An abstract of the lecture

Accurate description of electronic correlations is indispensable for the number of phenomena observed in the solid state physics and materials science. Unfortunately, the exact solution of the non-relativistic Schrödinger equation with electron-electron interactions included explicitly is impossible in most cases. This implies the difficulty in the theoretical description of many physical systems which exhibit unusual features. Therefore the application of approximate, albeit complex, computational methods is necessary, particularly those going beyond the Hartree-Fock method.

In my talk I will compactly present selected situations where such scenario takes place. The examples will cover such an archetypical issue as unconventional superconductivity observed in copper based compounds, as well as, more „exotic”, e.g., still hypothetical – molecular hydrogen metallization or the role of electron-electron interactions in the dot-ring natostructure. Finally, I will sketch the fascitantig properties of Twisted Bilayer Graphene, emphasising the necessity of application of theoretical methods elaborated for the treatment of strong electronic correlations to this system.