Spin-polarized low energy electron diffraction studies of Cu¿Au(001)

Combined measurements in low-energy electron diffraction of both intensity and diffracted electron spin-polarization are obtained for Cu,Au(1). Here the use of polarized LEED represents a refinement over standard LEED techniques because additional and complementary data is obtained. In addition, the recent implementation of a spin-modulated polarized electron source allows the rapid and simultaneous acquisition of PLEED I-V and P-V spectra. The order-disorder transition at the Cu,Au(1) surface, near the bulk transition temperature (at Tc=391°C), seems only slightly to affect PLEED profiles. The polarization of the (1) beam has been studied as a function of temperature between room temperature and 44°C. Although significant polarizations were noted, no dramatic transition-dependent polarization changes were found. Temperature dependent changes in the profiles are noted, and may be attributed to standard thermal scattering according to the Debye-Waller factor. In addition, angular studies of the specular diffraction were obtained, and may be used to characterize the ordered state at room temperature.

Name thesis:degree_name

Master of Arts

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Natural Sciences

Grantor

Rice University

Year dc:date.issued

1985

Author dc:creator

• Lind, David Melvin

Advisor dc:contributor.advisor

• Walters, G. King

Committee members dc:contributor.committeemember

• Dunning, F. Barry
• Baker, Stephen D.

Statement dc:rights

• Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1911/103983

OAI identifier oai:identifier

oai:repository.rice.edu:1911/103983