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Boron nitride on Cu(111): an electronically corrugated monolayer


Joshi, Sushobhan; Ecija, David; Koitz, Ralph; Iannuzzi, Marcella; Seitsonen, Ari P; Hutter, Juerg; Sachdev, Hermann; Vijayaraghavan, Saranyan; Bischoff, Felix; Seufert, Knud; Barth, Johannes V; Auwaerter, Willi (2012). Boron nitride on Cu(111): an electronically corrugated monolayer. Nano letters, 12(11):5821-5828.

Abstract

Ultrathin films of boron nitride (BN) have recently attracted considerable interest given their successful incorporation in graphene nanodevices and their use as spacer layers. to electronically decouple and order functional adsorbates. Here, we introduce a BN monolayer grown by chemical Vapor deposition of borazine on a single crystal Cu support, representing a model system for an electronically patterned but topographically smooth substrate. Scanning tunneling microscopy and spectroscopy experiments evidence a weak bonding Of the single BN sheet to Cu, preserving the insulating character of bulk hexagonal boron nitride combined with a periodic lateral variation of the local work function and the surface potential. Complementary, density functional theory calculations reveal a varying registry of the BN relative to the Cu lattice as origin of this electronic Moire-like superstructure.

Abstract

Ultrathin films of boron nitride (BN) have recently attracted considerable interest given their successful incorporation in graphene nanodevices and their use as spacer layers. to electronically decouple and order functional adsorbates. Here, we introduce a BN monolayer grown by chemical Vapor deposition of borazine on a single crystal Cu support, representing a model system for an electronically patterned but topographically smooth substrate. Scanning tunneling microscopy and spectroscopy experiments evidence a weak bonding Of the single BN sheet to Cu, preserving the insulating character of bulk hexagonal boron nitride combined with a periodic lateral variation of the local work function and the surface potential. Complementary, density functional theory calculations reveal a varying registry of the BN relative to the Cu lattice as origin of this electronic Moire-like superstructure.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:2012
Deposited On:13 Mar 2013 14:49
Last Modified:05 Apr 2016 16:40
Publisher:American Chemical Society
ISSN:1530-6984
Publisher DOI:https://doi.org/10.1021/nl303170m
PubMed ID:23083003

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