Angle-resolved photoemission extended fine structure: Multiple layers of emitters and multiple initial states

Conference · Tue Aug 01 04:00:00 EDT 1995

OSTI ID:114033

Huff, W R.A.; Kellar, S A; Moler, E J ^[1]; Chen, Y; Wu, H; Shirley, D A ^[2]; Hussain, Z ^[3]

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1. Lawrence Berkeley Lab., CA (US)
2. Pennsylvania State Univ., University Park, PA (US). Dept. of Chemistry and Physics
3. California Univ., Berkeley, CA (US). Dept. of Chemistry

Recently, angle-resolved photoemission extended fine structure (ARPEFS) has been applied to experimental systems involving multiple layers of emitters and non-s core-level photoemission in an effort to broaden the utility of the technique. Most of the previous systems have been comprised of atomic or molecular overlayers adsorbed onto a single-crystal, metal surface and the photoemission data were taken from an s atomic core-level in the overlayer. For such a system, the acquired ARPEFS data is dominated by the p{sub o} final state wave backscattering from the substrate atoms and is well understood. In this study, we investigate ARPEFS as a surface-region structure determination technique when applied to experimental systems comprised of multiple layers of photoemitters and arbitrary initial state core-level photoemission. Understanding the data acquired from multiple layers of photoemitters is useful for studying multilayer interfaces, ''buried'' surfaces, and clean crystals in ultra- high vacuum. The ability to apply ARPEFS to arbitrary initial state core-level photoemission obviously opens up many systems to analysis. Efforts have been ongoing to understand such data in depth. We present clean Cu(111) 3s, 3p, and 3d core-level, normal photoemission data taken on a high resolution soft x-ray beamline 9.3.2 at the Advanced Light Source in Berkeley, California and clean Ni(111) 3p normal photoemission data taken at the National Synchrotron Light Source in Upton, New York, USA.

• Research Organization: Lawrence Berkeley Lab., CA (US)
• Sponsoring Organization: USDOE, Washington, DC (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 114033
• Report Number(s): LBL--37640; LSBL-276; CONF-950859-2; ON: DE96001119
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
43 PARTICLE ACCELERATORS
ADVANCED LIGHT SOURCE
ATOMS
BACKSCATTERING
FAR ULTRAVIOLET RADIATION
FINE STRUCTURE
NSLS
PHOTOEMISSION
PHYSICS
RESOLUTION
SUBSTRATES