Seminario

Light-tunable ultrafast phenomena in quantum materials: a first principles approach

3 dicembre 2021
Orario di inizio 
16:30
Polo Ferrari 2 - Via Sommarive 9, Povo (Trento)
Aula B109 e modalità zoom
Organizzato da: 
Department of Physics
Destinatari: 
Comunità universitaria
Partecipazione: 
Ingresso libero
Online
Referente: 
dott. Roberto Menichetti
Contatti: 
Segreteria del Dipartimento di Fisica

Speaker

  • Giovanni Marini, Istituto Italiano di Tecnologia

Abstract

Designing and manipulating materials by means of ultrashort coherent light pulses is a hot research topic as it allows the observation of hidden broken-symmetry states and enables control over a broad range of material properties [1]. The talk aims to provide a comprehensive look at the most recent advances of this field. Special attention is devoted to illustrate the role of first principles techniques in the understanding of ultrafast physical phenomena: in particular, the inherent challenges of out-of-equilibrium system modeling are discussed and the development of a new density-functional theory based approach for treating laser irradiated insulators is presented [2]. I discuss how this new technique can be exploited to gain insights on the material’s behavior after irradiation and predict the appearance of hidden states from first principles, demonstrating the formation of charge-density wave orders in monolayer dichalcogenides [3] and a possible route to induce a magnetic ordered state in non-magnetic insulators.

[1] J. Lloyd-Hughes et al., Journal of Physics: Condensed Matter, 353001, (2021).
[2] G. Marini, M.Calandra, Phys. Rev. B 104, 144103 (2021).
[3] G. Marini, M.Calandra, accepted in Phys. Rev. Lett. (2021).

Who is Giovanni Marini?

Giovanni Marini received his PhD degree at the University of L’Aquila in 2021. Since November 2020 he has been working as a postdoctoral researcher at the Italian Institute of Technology under the supervision of Prof. Matteo Calandra Buonaura. His expertise lies in theoretical solid state physics and his research interests include 2D materials, ultrafast phenomena, charge-density waves, superconductivity, magnetism and topological phases.

Modalità

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