Surface state at the (K)over-bar point of the surface brillouin zone on Cu{111}
Yang Y(杨言); Liu FQ(刘凤琴); Kui RX(奎热西); Qian HJ(钱海杰); Yang, Y; Wu, SC; Liu, FQ; Ibrahim, K; Qian, HJ; Lu, SH; Jona, F
刊名PHYSICAL REVIEW B
1996
卷号54期号:7页码:5092-5096
学科分类Physics
DOI10.1103/PhysRevB.54.5092
通讯作者BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA ; SUNY STONY BROOK,DEPT MAT SCI & ENGN,STONY BROOK,NY 11794
文章类型Article
英文摘要The electronic structure of a Cu{111} surface along the (K) over bar-Gamma line of the surface Brillouin zone (SBZ) is studied with synchrotron-radiation angle-resolved photoemission spectroscopy. The experiments reveal the presence of an electron state about 3 eV below the Fermi level near the (K) over bar point of the SBZ. This state has all the conventional attributes of a surface state, namely, (1) its binding energy is independent of the perpendicular photoelectron momentum; (2) its energy-dispersion curve lies in an absolute gap of the projected bulk band structure near the (K) over bar point; and (3) its emission intensity is sensitive to foreign atoms (cobalt, in the present experiments). Hence, this state is interpreted in terms of a localized d-electron Tamm-type surface state. However, its intensity and its energy position are hardly affected by the adsorption of 3500 L, [1 L = 1 x 10(-6) Torr sec] of oxygen. This unconventional behavior was compared to that of the sp-electron Shockley surface state at the Gamma point (binding energy 0.4 eV below the Fermi level), which exhibits the opposite effect with regard to the adsorption of cobalt or oxygen. A tentative explanation of this interesting phenomenon is presented.
类目[WOS]Physics, Condensed Matter
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:A1996VE48800101
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240012
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
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Yang Y,Liu FQ,Kui RX,et al. Surface state at the (K)over-bar point of the surface brillouin zone on Cu{111}[J]. PHYSICAL REVIEW B,1996,54(7):5092-5096.
APA 杨言.,刘凤琴.,奎热西.,钱海杰.,Yang, Y.,...&Jona, F.(1996).Surface state at the (K)over-bar point of the surface brillouin zone on Cu{111}.PHYSICAL REVIEW B,54(7),5092-5096.
MLA 杨言,et al."Surface state at the (K)over-bar point of the surface brillouin zone on Cu{111}".PHYSICAL REVIEW B 54.7(1996):5092-5096.
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