Formation of nonbonding π electronic states of graphite due to Pt-C hybridization

被引：30

作者：

Kondo, Takahiro ^{[1
]}

Iwasaki, Yosuke ^{[1
]}

Honma, Yujiro ^{[1
]}

Takagi, Yoshiteru ^{[1
,2
,3
]}

Okada, Susumu ^{[1
,2
,3
]}

Nakamura, Junji ^{[1
]}

机构：

[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058573, Japan

[2] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058573, Japan

[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 23期

关键词：

ab initio calculations; density functional theory; Fermi level; graphene; graphite; metal clusters; phonons; platinum; scanning tunnelling spectroscopy; sheet materials; SCANNING-TUNNELING-MICROSCOPY; ORIENTED PYROLYTIC-GRAPHITE; INTERFERENCE MODEL; PLATINUM PARTICLES; EDGE STATES; SURFACE; SPECTROSCOPY; SUPERSTRUCTURES; GRAPHENE; CLUSTERS;

D O I：

10.1103/PhysRevB.80.233408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic states of the graphite surface with platinum clusters have been investigated at the atomic scale by scanning tunneling spectroscopy. The distinct local density of states were observed near the Fermi level for carbon atoms around the Pt clusters, which has been ascribed as nonbonding pi electronic states of graphite due to Pt-C hybridization. This is consistent with the experimentally observed weaker phonon energies of graphite near the Pt cluster as well as the results of first-principles density-functional calculations of a graphene sheet with a Pt cluster.

引用

页数：4

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