In this paper, we present results concerning ab initio calculations of the optical properties of group IV two-dimensional sheets and compare them with the prediction of an analytical model for excitons in two dimensions, which we explicitly derive. This comparison helps to understand the physics at the basis of the strong many-body effects present in the optical spectra of this class of materials. Although it demonstrates the need of full ab initio calculations for an accurate description of the two-dimensional excitons, it validates, at the same time, this simple approach to estimate, through a density functional theory calculation of the two-dimensional electronic and optical properties, the binding energy and the radius of the excitons in this class of materials.

O. Pulci, MARSILI, M., V. Garbuio, P. Gori, I. Kupchak, F. Bechstedt (2015). Excitons in two-dimensional sheets with honeycomb symmetry. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 252, 72-77 [10.1002/pssb.201350404].

Excitons in two-dimensional sheets with honeycomb symmetry

MARSILI, MARGHERITA;
2015

Abstract

In this paper, we present results concerning ab initio calculations of the optical properties of group IV two-dimensional sheets and compare them with the prediction of an analytical model for excitons in two dimensions, which we explicitly derive. This comparison helps to understand the physics at the basis of the strong many-body effects present in the optical spectra of this class of materials. Although it demonstrates the need of full ab initio calculations for an accurate description of the two-dimensional excitons, it validates, at the same time, this simple approach to estimate, through a density functional theory calculation of the two-dimensional electronic and optical properties, the binding energy and the radius of the excitons in this class of materials.
2015
O. Pulci, MARSILI, M., V. Garbuio, P. Gori, I. Kupchak, F. Bechstedt (2015). Excitons in two-dimensional sheets with honeycomb symmetry. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 252, 72-77 [10.1002/pssb.201350404].
O. Pulci; MARSILI, MARGHERITA; V. Garbuio; P. Gori; I. Kupchak; F. Bechstedt
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/911493
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 23
  • ???jsp.display-item.citation.isi??? 20
social impact