Articolo in rivista, 2015, ENG, 10.1103/PhysRevB.91.075303

Nearly-free electronlike surface resonance of a beta-Si3N4(0001)/Si(111)-8 × 8 interface

R. Flammini,1,* P. Allegrini,2 F. Wiame,3 R. Belkhou,4 F. Ronci,1 S. Colonna,1 D. M. Trucchi,5 F. Filippone,5 S. K. Mahatha,6,7 P. M. Sheverdyaeva,7 and P. Moras7

1 CNR-ISM Istituto di Struttura della Materia, Via del Fosso del Cavaliere 100, I-00133 Roma, Italy 2 CNR-IFN Istituto di Fotonica e Nanotecnologie, Via Cineto Romano 42, I-00156 Roma, Italy 3 Institut de Recherche de Chimie Paris (CNRS - Chimie ParisTech), Ecole Nationale Sup´erieure de Chimie de Paris (ENSCP), 11 rue Pierre et Marie Curie, F-75005 Paris, France 4 Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, B.P. 48F, F-91192 Gif Sur Yvette, France 5 CNR-ISM Istituto di Struttura della Materia, Via Salaria km 29.300, I-00019 Monterotondo Scalo (RM), Italy 6 International Center for Theoretical Physics (ICTP), I-34014 Trieste, Italy 7 CNR-ISM, Istituto di Struttura della Materia, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy

We report the discovery of a nearly-free electronlike resonant state for a ?-Si3N4(0001)-8×8 layer grown on Si(111), as observed by angle-resolved photoemission and scanning tunneling spectroscopy. Comparison with measurements performed on a Si(111)-7×7 surface helped us in the identification of the band. It is found that this parabolic state is degenerate with surface projected bulk bands of the Si(111) substrate.

Physical Review B 91 , pp. 075303-1–075303-7

Keywords

SILICON-NITRIDE; SI(111) SURFACE; MICROSCOPY; FILMS; SEMICONDUCTORS; BETA-SI3N4; GROWTH

CNR authors

Sheverdyaeva Polina, Allegrini Paolo, Colonna Stefano, Ronci Fabio, Filippone Francesco, Moras Paolo, Trucchi Daniele Maria, Flammini Roberto

CNR institutes

IFN – Istituto di fotonica e nanotecnologie, ISM – Istituto di struttura della materia, ISM – Istituto di struttura della materia

ID: 307143

Year: 2015

Type: Articolo in rivista

Creation: 2015-02-13 10:23:27.000

Last update: 2022-06-08 13:27:48.000

External links

OAI-PMH: Dublin Core

OAI-PMH: Mods

OAI-PMH: RDF

DOI: 10.1103/PhysRevB.91.075303

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:307143

DOI: 10.1103/PhysRevB.91.075303

Scopus: 2-s2.0-84922423143

ISI Web of Science (WOS): 000350170900003