The microscopic study of complex systems has reached a high level of accuracy that allows for a deep understanding of their structure, electronic properties, and optical spectra. The theoretical investigation of surfaces is nowadays routinely done within density functional theory, for ground state properties, and, with a larger computational load, within many-body perturbation theory, for excited states properties. In this paper we present and discuss examples of calculations for group IV two-dimensional systems such as a clean silicon surface, a tin–germanium interface, graphene, and graphane, pointing out the importance of a pertinent treatment of many-body effects.
Electronic and optical properties of group IV 2-dimensional materials / PULCI, OLIVIA; Gori, P; MARSILI, MARGHERITA; Garbuio, V; Seitsonen, A. P; Bechstedt, F; Cricenti, A; DEL SOLE, RODOLFO. - In: PHYSICA STATUS SOLIDI. A, APPLICATIONS AND MATERIALS SCIENCE. - ISSN 1862-6300. - STAMPA. - 207:2(2010), pp. 291-299. [10.1002/pssa.200982503]
Electronic and optical properties of group IV 2-dimensional materials
MARSILI, MARGHERITA;
2010
Abstract
The microscopic study of complex systems has reached a high level of accuracy that allows for a deep understanding of their structure, electronic properties, and optical spectra. The theoretical investigation of surfaces is nowadays routinely done within density functional theory, for ground state properties, and, with a larger computational load, within many-body perturbation theory, for excited states properties. In this paper we present and discuss examples of calculations for group IV two-dimensional systems such as a clean silicon surface, a tin–germanium interface, graphene, and graphane, pointing out the importance of a pertinent treatment of many-body effects.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.