Surface states of a Pd monolayer formed on a Au(111) surface studied by angle-resolved photoemission spectroscopy

被引：15

作者：

Eguchi, T. ^{[1
]}

Kamoshida, A. ^{[1
]}

Ono, M. ^{[1
]}

Hamada, M. ^{[1
]}

Shoda, R. ^{[1
]}

Nishio, T. ^{[1
]}

Harasawa, A. ^{[1
]}

Okuda, T. ^{[1
]}

Kinoshita, T. ^{[1
]}

Hasegawa, Y. ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 07期

关键词：

BAND;

D O I：

10.1103/PhysRevB.74.073403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electronic states of a Pd-deposited (< 1 ML) Au(111) surface have been studied using angle-resolved ultraviolet photoemission spectroscopy. A shoulder induced by Pd deposition was observed on a peak assigned to the Shockley surface states of the Au(111) substrate in the spectra measured around the surface normal direction. The photoemission study revealed that the Pd-induced states have parabolic energy dispersion with an effective mass identical to that of the substrate states while its binding energy is 0.17 +/- 0.2 eV smaller than the substrate state. It is also found that the binding energy of the Au substrate surface states decreases with Pd deposition. The spectroscopic properties of the Pd-induced states indicate that the states originate from the Au(111) surface states and are modified by the presence of monolayer Pd islands on the substrate.

引用

页数：4

共 12 条

[1] IMAGING STANDING WAVES IN A 2-DIMENSIONAL ELECTRON-GAS [J].