Comparison of electronic structure and template function of single-layer graphene and a hexagonal boron nitride nanomesh on Ru(0001)

被引：178

作者：

Brugger, Thomas ^{[1
]}

Guenther, Sebastian ^{[2
]}

Wang, Bin ^{[3
]}

Dil, J. Hugo ^{[1
,4
]}

Bocquet, Marie-Laure ^{[2
,3
]}

Osterwalder, Juerg ^{[1
]}

Wintterlin, Joost ^{[2
]}

Greber, Thomas ^{[1
]}

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[2] Univ Munich, Dept Chem, D-81377 Munich, Germany

[3] Univ Lyon, CNRS, Chim Lab, Ecole Normale Super Lyon, F-69007 Lyon, France

[4] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

H-BN; SURFACE; MONOLAYER; GRAPHITE; NI(111); DECOMPOSITION; PHOTOEMISSION; PT(111);

D O I：

10.1103/PhysRevB.79.045407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structure of a single-layer graphene on Ru(0001) is compared with that of a single-layer hexagonal boron nitride nanomesh on Ru(0001). Both are corrugated sp(2) hybridized networks and display a pi band gap at the (K) over bar point of their 1 x 1 Brillouin zone. In contrast to h-BN/Ru(0001), g/Ru(0001) has a distinct Fermi surface. Together with the band structure measurements this indicates that 0.1e per 1 x 1 unit cell are transferred from the Ru substrate to the graphene. Photoemission from adsorbed xenon on g/Ru(0001) identifies two Xe 5p(1/2) lines, separated by 240 meV, which reveals a corrugated electrostatic potential energy surface like on h-BN/Rh(111). These two Xe species are related to the topography of the template and have different desorption energies.

引用

页数：6

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