DICHROISM IN ANGLE-RESOLVED PHOTOEMISSION FROM Pt(111)

2002 ◽  
Vol 09 (02) ◽  
pp. 883-888 ◽  
Author(s):  
G. H. FECHER ◽  
J. BRAUN ◽  
A. OELSNER ◽  
CH. OSTERTAG ◽  
G. SCHÖNHENSE
Keyword(s):  
Circular Dichroism ◽  
Band Structure ◽  
Valence Band ◽  
Single Step ◽  
Core Level ◽  
X Ray ◽  
Photoelectron Diffraction ◽  
Band Emission ◽  
First Results ◽  
Circular Dichroïsm

The angular dependence of the circular dichroism in photoemission from Pt(111) was investigated for excitation with VUV and soft X-ray radiation. VUV excitation was used to probe band structure and the circular dichroism for valence band emission. The measurements are compared to full relativistic single step photoemission calculations. XPS was used to investigate the circular dichroism in emission from the 4f core level. In this case, the dichroism is induced by photoelectron diffraction. First results from single step core level calculations are compared to the experimental observations.

scholarly journals Photoelectron-diffraction effects and circular dichroism in core-level photoemission

1994 ◽  
Vol 50 (9) ◽  
pp. 6203-6208 ◽  
Author(s):  
C. Westphal ◽  
A. P. Kaduwela ◽  
C. S. Fadley ◽  
M. A. Van Hove
Keyword(s):  
Circular Dichroism ◽  
Core Level ◽  
Photoelectron Diffraction ◽  
Diffraction Effects ◽  
Circular Dichroïsm

scholarly journals Spin‐specific photoelectron diffraction using magnetic x‐ray circular dichroism

1994 ◽  
Vol 76 (10) ◽  
pp. 6465-6467 ◽  
Author(s):  
J. G. Tobin ◽  
G. D. Waddill ◽  
X. Guo ◽  
S. Y. Tong
Keyword(s):  
Circular Dichroism ◽  
X Ray ◽  
Photoelectron Diffraction ◽  
Circular Dichroïsm

ANGLE-RESOLVED SOFT X-RAY PHOTOEMISSION FOR THE VALENCE BAND OF GRAPHITE

2002 ◽  
Vol 09 (02) ◽  
pp. 1321-1326 ◽  
Author(s):  
TOMOHIRO MATSUSHITA ◽  
TAKAYUKI MURO ◽  
YUJI SAITOH ◽  
TAKESHI NAKATANI ◽  
AKIRA SEKIYAMA ◽  
...  
Keyword(s):  
Band Structure ◽  
Valence Band ◽  
Crystal Surface ◽  
Pyrolytic Graphite ◽  
X Ray ◽  
Photoelectron Diffraction ◽  
Valence Bands ◽  
Diffraction Effects ◽  
Bulk Band ◽  
Better Than

Angle-resolved photoemission in the soft X-ray region has so far been used to study crystal (surface) structure by using photoelectron diffraction phenomena. In this energy region, the observation of the band structure was considered to be difficult, because the momentum of the incident photon cannot be negligible, the emitted electron is strongly influenced by the electron diffraction effects, and the cross section of the valence band is very small. We have performed the angle-resolved photoemission from the valence bands of highly oriented pyrolytic graphite by using the soft X-ray (hν=980 eV ) and successfully observed the band structure. The appearance of the structures of the band density of state is also discussed. Since the escape depth for the electrons with high kinetic energies is longer than ARUPS, this experimental method is better than the usual ARUPS in order to study the bulk band structures in solids.

Circular dichroism in core‐level photoemission from nonmagnetic and magnetic systems: A photoelectron diffraction viewpoint (abstract)

1994 ◽  
Vol 76 (10) ◽  
pp. 6477-6477
Author(s):  
A. P. Kaduwela ◽  
H. Xiao ◽  
S. Thevuthasan ◽  
C. Westphal ◽  
M. A. Van Hove ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Core Level ◽  
Magnetic Systems ◽  
Photoelectron Diffraction ◽  
Circular Dichroïsm

Angle- and Temperature- Dependent Magnetic Circular Dichroism in Gd(0001) Core-Level Photoemission

1997 ◽  
Vol 475 ◽  
Author(s):  
J. Morais ◽  
R. Denecke ◽  
R. X. Ynzunza ◽  
J.G. Menchero ◽  
J. Liesegang ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Curie Temperature ◽  
Angular Dependence ◽  
Magnetic Circular Dichroism ◽  
Core Level ◽  
Temperature Dependent ◽  
Photoelectron Diffraction ◽  
Magnetic Dichroism ◽  
Diffraction Effects ◽  
Circular Dichroïsm

ABSTRACTRecent results on the dependence of the magnetic circular dichroism on the angle and temperature for thick (100 ML) films of Gd(0001) are presented. Strong dichroic effects were observed in 4d core-level photoemission for the magnetized films, which showed excellent agreement with an atomic many-particle description recently published [1]. The angular dependence of the magnetic dichroism has been discussed taking into account photoelectron diffraction effects. In addition, an indication of a higher surface Curie temperature has been observed in the temperature- dependent measurements.

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