Spin-dependent electron attenuation lengths and influence on spectroscopic data

被引：23

作者：

Passek, F ^{[1
]}

Donath, M ^{[1
]}

Ertl, K ^{[1
]}

机构：

[1] EURATOM, MAX PLANCK INST PLASMAPHYS, SURFACE PHYS DIV, D-85740 GARCHING, GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 159卷 / 1-2期

关键词：

electron attenuation lengths; spin-polarized electron spectroscopies; ultrathin magnetic films;

D O I：

10.1016/0304-8853(95)00940-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inverse photoemission from W(110) becomes spin dependent when the surface is covered with ultrathin ferromagnetic iron films. The spin asymmetry is not intrinsic to the tungsten electronic structure but is caused by spin-dependent electron attenuation within the ferromagnetic overlayer. The ratio of 1.7 +/- 0.3 between the spin-down and spin-up attenuation lengths for an electron energy of 12.6 eV above the Fermi level can be explained within a simple model by inelastic scattering. The influence of spin-dependent attenuation lengths on experimental data from electron spectroscopy is discussed and demonstrated by simulations. The observed electron spin polarization or spin asymmetry is strongly affected, while the energetic positions of features in spin-up and spin-down spectra are not.

引用

页码：103 / 108

页数：6

共 29 条

[1] THE MAGNETIC PROBING DEPTH OF SPIN POLARIZED SECONDARY ELECTRONS AND THE INFLUENCE OF ELASTIC SPIN-FLIP PROCESSES
ABRAHAM, DL
HOPSTER, H
[J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1988, 6 (03): : 585 - 586
[2] MAGNETIC PROBING DEPTH IN SPIN-POLARIZED SECONDARY-ELECTRON SPECTROSCOPY
ABRAHAM, DL
HOPSTER, H
[J]. PHYSICAL REVIEW LETTERS, 1987, 58 (13) : 1352 - 1354
[3] ENHANCEMENT OF THE ELECTRON-SPIN POLARIZATION IN THE PHOTOYIELD OF NI(111) IN THE VACUUM ULTRAVIOLET
BRINGER, A
CAMPAGNA, M
FEDER, R
GUDAT, W
KISKER, E
KULHMANN, E
[J]. PHYSICAL REVIEW LETTERS, 1979, 42 (25) : 1705 - 1708
[4] SURFACE MAGNETIZATION OF FERROMAGNETIC NI(110) - POLARIZED LOW-ENERGY ELECTRON-DIFFRACTION EXPERIMENT
CELOTTA, RJ
PIERCE, DT
WANG, GC
BADER, SD
FELCHER, GP
[J]. PHYSICAL REVIEW LETTERS, 1979, 43 (10) : 728 - 731
[5] POLARIZATION EFFECTS IN INVERSE-PHOTOEMISSION SPECTRA FROM NI(110)
DONATH, M
DOSE, V
ERTL, K
KOLAC, U
[J]. PHYSICAL REVIEW B, 1990, 41 (09): : 5509 - 5518
[6] SPIN-DEPENDENT ELECTRONIC-STRUCTURE AT MAGNETIC-SURFACES - THE LOW-MILLER-INDEX SURFACES OF NICKEL
DONATH, M
[J]. SURFACE SCIENCE REPORTS, 1994, 20 (5-6) : 251 - 316
[7] PROBING DEPTH OF THE LOW-ENERGY CASCADE ELECTRONS FROM A TRANSITION-METAL
DONATH, M
SCHOLL, D
SIEGMANN, HC
KAY, E
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1991, 52 (03): : 206 - 209
[8] THEORY OF IMAGE STATES AT METAL-SURFACES
ECHENIQUE, PM
PENDRY, JB
[J]. PROGRESS IN SURFACE SCIENCE, 1989, 32 (02) : 111 - 172
[9] THEORY OF SPIN-POLARIZED LOW-ENERGY ELECTRON-DIFFRACTION FROM FERROMAGNETS
FEDER, R
[J]. SOLID STATE COMMUNICATIONS, 1979, 31 (11) : 821 - 823
[10] MOMENTUM RESOLVED INVERSE PHOTOEMISSION AND TOTAL CURRENT SPECTRA OF W(110)
FUNNEMANN, D
MERZ, H
[J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1987, 5 (04): : 657 - 658

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