Canted magnetic moments at the Gd(0001) surface
- Syracuse Univ., NY (United States)
- Brookhaven National Lab., NY (United States)
- Univ. of California, Irvine (United States)
- IBM Almaden Research Center, San Jose, CA (United States)
With spin polarized electron spectroscopies, the authors have investigated ordered Gd(0001) films deposited on W(110). The photoemission features of the gadolinium 5d surface state, the 4f levels, and the background exhibit considerable spin polarization along the same direction in the plane of the film, indicative of ferromagnetic coupling between the surface and the bulk. The 4f spin polarized photoemission data provides strong evidence that the surface 4f polarization differs from the bulk 4f polarization for Gd(0001). The temperature dependent measurements with spin polarized secondary electron spectroscopy conclusively establishes that the surface of clean Gd(0001) possesses a perpendicular polarization component which persists to an enhanced surface Curie temperature. Small amounts of contamination at the surface result in the disappearance of the perpendicular component and, therefore, a more perfect ferromagnetic coupling between the surface and the bulk.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE; National Science Foundation (NSF); USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6543693
- Report Number(s):
- BNL-48954; CONF-930405-14; ON: DE93014327
- Resource Relation:
- Conference: Spring meeting of the Materials Research Society, San Francisco, CA (United States), 12-16 Apr 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GADOLINIUM
ELECTRONIC STRUCTURE
FERROMAGNETISM
PHOTOEMISSION
SPIN ORIENTATION
THIN FILMS
SURFACE PROPERTIES
CONTAMINATION
COUPLING
CURIE POINT
ELECTRON SPECTROSCOPY
MAGNETIC MOMENTS
SECONDARY EMISSION
TEMPERATURE DEPENDENCE
TUNGSTEN
ELEMENTS
EMISSION
FILMS
MAGNETISM
METALS
ORIENTATION
PHYSICAL PROPERTIES
RARE EARTHS
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
360104* - Metals & Alloys- Physical Properties
665000 - Physics of Condensed Matter- (1992-)