Surface core-level shifts of Ge(100)-2X1

被引：20
|
作者：
Pi, TW [1 ]
Wen, JF
Ouyang, CP
Wu, RT
机构：
[1] Synchrotron Radiat Res Ctr, Hsinchu, Taiwan
[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan
来源：
PHYSICAL REVIEW B | 2001年 / 63卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.63.153310
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Core-level photoemission spectra of the buckled Ge(001)-2x1 surface taken at various energies and emission angles are analyzed, using the inelastic mean free path (IMFP) to constrain the intensities of the contributions to the 3d signal of the first two surface layers and the bulk. This ansatz successfully represents data from the clean Ge(100) surface at all emission angles and photon energies. The surface core-level shifts of the up-dimer atom, down-dimer atom, and subsurface atom are then found at -442, -183, and +93 meV, respectively. They are in good agreement with the final-state theoretical calculations by Pehlke and Scheffler [Phys. Rev. Lett. 71, 2338 (1993)]. The IMFP is 3.5+/-0.2 Angstrom at 26 eV kinetic energy. Furthermore, we found that hulk and surface atoms have distinct spin-orbit splittings of 594 and 561 meV, respectively.
引用
收藏
页数：3
相关论文
共 50 条
  • [1] SURFACE CORE-LEVEL SHIFTS FOR GE(100)-(2X1)
    MILLER, T
    ROSENWINKEL, E
    CHIANG, TC
    SOLID STATE COMMUNICATIONS, 1983, 47 (11) : 935 - 938
  • [2] CORE-LEVEL SHIFTS OF THE GE(100)-(2X1) SURFACE AND THEIR ORIGINS
    CAO, R
    YANG, X
    TERRY, J
    PIANETTA, P
    PHYSICAL REVIEW B, 1992, 45 (23) : 13749 - 13752
  • [3] CORE-LEVEL SHIFTS ON THE H2O EXPOSED GE(100)2X1 SURFACE
    LARSSON, CUS
    FLODSTROM, AS
    KARLSSON, UO
    YANG, Y
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1989, 7 (03): : 2044 - 2048
  • [4] SURFACE CORE-LEVEL SHIFTS ON GE(100) - C(4X2) TO 2X1 AND 1X1 PHASE-TRANSITIONS
    LELAY, G
    KANSKI, J
    NILSSON, PO
    KARLSSON, UO
    HRICOVINI, K
    PHYSICAL REVIEW B, 1992, 45 (12): : 6692 - 6699
  • [5] SI INDIFFUSION ON GE(100)-(2X1) STUDIED BY CORE-LEVEL PHOTOEMISSION
    LIN, DS
    MILLER, T
    CHIANG, TC
    PHYSICAL REVIEW B, 1992, 45 (19): : 11415 - 11418
  • [6] FINAL-STATE PSEUDOPOTENTIAL THEORY FOR THE GE 3D CORE-LEVEL SHIFTS ON THE GE/S(100)-(2X1) SURFACE
    CHO, JH
    JEONG, SM
    KANG, MH
    PHYSICAL REVIEW B, 1994, 50 (23): : 17139 - 17142
  • [7] ABSOLUTE DETERMINATION OF SURFACE CORE-LEVEL EMISSION FOR GE(100)-(2X1) AND GE(111)-C(2X8) - SURFACE RECONSTRUCTION AND DEFECTS
    RICH, DH
    MILLER, T
    CHIANG, TC
    PHYSICAL REVIEW LETTERS, 1988, 60 (04) : 357 - 360
  • [8] Evidence for three surface components in the 3d core-level photoemission spectra of Ge(100)-(2x1) surface
    Goldoni, A
    Modesti, S
    Dhanak, VR
    Sancrotti, M
    Santoni, A
    PHYSICAL REVIEW B, 1996, 54 (16): : 11340 - 11345
  • [9] SI(100) AND GE(100) CORE-LEVEL SHIFTS - A REEVALUATION
    YANG, X
    CAO, R
    TERRY, J
    PIANETTA, P
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1992, 10 (04): : 2013 - 2017
  • [10] CORE-LEVEL BINDING-ENERGY SHIFTS DUE TO RECONSTRUCTION ON THE SI(111) 2X1 SURFACE
    BRENNAN, S
    STOHR, J
    JAEGER, R
    ROWE, JE
    PHYSICAL REVIEW LETTERS, 1980, 45 (17) : 1414 - 1418
12345