Electronic and electrostatic properties of polar oxide nanostructures: MgO(111) islands on Au(111) (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Electronic and electrostatic properties of polar oxide nanostructures: MgO(111) islands on Au(111) (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.86.205410 (literal)

Alternative label

• Niklas Nilius,1, Stefania Benedetti,2 Yi Pan,1 Philipp Myrach,1 Claudine Noguera,3 Livia Giordano,4 Jacek Goniakowski3 (2012)
  Electronic and electrostatic properties of polar oxide nanostructures: MgO(111) islands on Au(111)
  in Physical review. B, Condensed matter and materials physics (Online)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Niklas Nilius,1, Stefania Benedetti,2 Yi Pan,1 Philipp Myrach,1 Claudine Noguera,3 Livia Giordano,4 Jacek Goniakowski3 (literal)

Pagina inizio

• 205410 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 86 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1 Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany 2 Centro S3, Instituto Nanoscienze-CNR, via Campi 213/a, 41125 Modena, Italy 3CNRS and Université Pierre et Marie Curie-Paris 6, INSP, UMR7588, 4 place Jussieu, 75252 Paris, cedex 05, France 4 Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via Cozzi 53, 20125 Milano, Italy (literal)

Titolo

• Electronic and electrostatic properties of polar oxide nanostructures: MgO(111) islands on Au(111) (literal)

Abstract

• Using scanning tunneling microscopy and density functional theory (DFT), we have analyzed the local electronic properties of (111)-oriented MgO nanoislands on Au(111). Conductance and barrier-height measurements revealed substantial modulations in the electronic structure and electrostatic potential across the islands, with particularly high and low values for band onsets and surface potential occurring at the perimeter and in the island center, respectively. DFT calculations showed that MgO(111) monolayer structures exhibit a strongly reduced distance between the Mg?+ and O?- plane as compared to bulk MgO, which in turn suppresses the polar character of the film. The spatial modulations in the electronic properties originate from gradual changes of the interface registry when approaching the island edges, driven by a small mismatch between the Au(111) and MgO(111) lattices. At the periphery of the islands, additional effects such as band shifts and low-lying electronic states are observed, which arise from the interplay of residual edge polarity and unsaturated chemical bonds. We expect that the peculiar edge properties of MgO(111) islands are decisive for the chemical behavior of the nanostructures. (literal)

Prodotto di

• Nanofabbricazione e fenomeni di superficie interfaccia alla nanoscala (MD.P06.013.002) (Modulo)

Autore CNR

• STEFANIA BENEDETTI (Unità di personale interno)

Incoming links:

Prodotto

• Nanofabbricazione e fenomeni di superficie interfaccia alla nanoscala (MD.P06.013.002) (Modulo)

Autore CNR di

• STEFANIA BENEDETTI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)