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Giacomo Sesti

  • CNR Post-Doc
  • giacomo.sesti@nano.cnr.it
  • Modena
  • +39-059-2058118
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Short Bio

I graduated at the University of Modena and Reggio Emilia in 2017. My master thesis work focused on the study of the time Evolution of Magnetic Vector Fields in Layered Antiferromagnets, the work was carried out partly in Modena under the supervision of professor C.M.Bertoni and partly at Radboud University in Nijmegen with ­professor M. Titov.

 

After my master thesis, I started to collaborate with CNR NANO in Modena. In 2017, I won a Fellowship for a first project under the supervision of Dr. Massimo Rontani. The collaboration then continued in the course of my PhD at the school of Physics and Nanosciences of the University of Modena and Reggio Emilia from 2018 to 2022. My work during the PhD has been the study of excitonic properties of Carbon Nanotubes, in particular to study the possible presence of an excitonic instabilities in narrow gap tubes.

 

My first postdoc has been at the University of Modena and Reggio Emilia from 2022 to 2024. In the course of the postdoc, I worked to develop a computational efficient method within the Yambo code to properly treat metallic screening in first-principles many-body calculations within the GW approximation.

Research Interests

My scientific research focuses on the study of screening properties of materials and electronic instabilities. Such a study is performed combining computational many-body calculations with model theory. In particular, the model calculations are used to investigate the macroscopic coherent state of material, which is of difficult analysis within the first-principle framework. The starting point of the model theory is the result of the many-band calculations.

 

The many-body calculations, in the GW approximation, have become the standard for predicting quasi-particle band structures of materials. Quasi-particle corrections play an important role chiefly in semiconductors, and are typically smaller in metallic system. At low dimensionality, quasi-particle corrections become however relevant to investigate semimetallic systems, and in particular inspect their excitonic properties. From a more technical point of view, the simulations are performed using the Yambo code, an open source code widely used in the condensed matter community, of which I am also a developer.

Selected Recent Projects

PRIN 2022 TUNES https://prin.mur.gov.it/

Selected Publications

Optical properties of metallic MXene multilayers through advanced first-principles calculations. Zafer Kandemir Z., D'Amico P., Sesti G., Cardoso C., Milošević M. V., and Sevik C. Phys. Rev. Materials 8, 075201 (2024).

 

Anomalous screening in narrow-gap carbon nanotubes. Sesti G., Varsano D., Molinari E., and Rontani M. Phys. Rev. B 105, 195404 (2022).

Istituto Nanoscienze 

Consiglio Nazionale delle Ricerche

 

PEC: protocollo.nano@pec.cnr.it

Partita IVA 02118311006

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Pisa NEST

Piazza San Silvestro 12

56127 Pisa, Italy

phone +39 050 509418

fax +39 050 509550

segreteria.nest@nano.cnr.it

Modena S3
via Campi 213/A
41125 Modena, Italy
phone +39 059 2055629
fax +39 059 2055651
segreteria.s3@nano.cnr.it

Istituto Nanoscienze Consiglio Nazionale delle Ricerche

Facebook-f Instagram Twitter Linkedin
Pisa NEST

Piazza San Silvestro 12, I
56127 Pisa

phone +39 050 509525/418

fax +39 050 509550

Modena S3

via Campi 213/A, I 

41125 Modena 7

phone +39 059 2055629

fax +39 059 2055651″