Reversible graphene-metal contact through hydrogenation

被引：27

作者：

Rajasekaran, Srivats ^{[1
,2
]}

Kaya, Sarp ^{[2
,3
]}

Abild-Pedersen, Frank ^{[4
]}

Anniyev, Toyli ^{[2
]}

Yang, Fan ^{[5
]}

Stacchiola, Dario ^{[5
]}

Ogasawara, Hirohito ^{[3
]}

Nilsson, Anders ^{[2
,3
,4
]}

机构：

[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[2] SLAC Natl Accelerator Lab, SIMES, Menlo Pk, CA 94025 USA

[3] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[4] SLAC Natl Accelerator Lab, SUNCAT Ctr Interface Sci & Catalysis, Menlo Pk, CA 94025 USA

[5] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 07期

关键词：

ELECTRONIC-STRUCTURE; ATOMIC-HYDROGEN; SPECTROSCOPY; ADSORPTION; CU(111);

D O I：

10.1103/PhysRevB.86.075417

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We use x-ray spectroscopy and density functional theory to investigate the hydrogenation-induced electronic structure changes in graphene on Pt(111). The atom-specific properties of the spectroscopy allow for a direct projection of the band structure onto the carbon atoms; this was compared with the calculated density of states. Instead of the generally expected band opening behavior, we observe states at the Fermi level in the carbon-projected density of states. Hydrogenation is accompanied by pinning of the graphene to the substrate through the formation of local C-Pt bonds which cause the graphene layer to become metallic upon hydrogenation.

引用

页数：6

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