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Title: Canted magnetic moments at the Gd(0001) surface

Abstract

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.

Authors:
; ;  [1]; ;  [2]; ; ;  [3]; ; ;  [4]
  1. Syracuse Univ., NY (United States)
  2. Brookhaven National Lab., NY (United States)
  3. Univ. of California, Irvine (United States)
  4. IBM Almaden Research Center, San Jose, CA (United States)
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF); USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
OSTI Identifier:
6543693
Report Number(s):
BNL-48954; CONF-930405-14
ON: DE93014327
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Conference
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
Subject:
36 MATERIALS SCIENCE; 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-)

Citation Formats

Li, Dongqi, Zhang, Jiandi, Dowben, P A, Garrison, K, Johnson, P D, Tang, H, Walker, T G, Hopster, H, Scott, J C, Weller, D, and Pappas, D P. Canted magnetic moments at the Gd(0001) surface. United States: N. p., 1993. Web.
Li, Dongqi, Zhang, Jiandi, Dowben, P A, Garrison, K, Johnson, P D, Tang, H, Walker, T G, Hopster, H, Scott, J C, Weller, D, & Pappas, D P. Canted magnetic moments at the Gd(0001) surface. United States.
Li, Dongqi, Zhang, Jiandi, Dowben, P A, Garrison, K, Johnson, P D, Tang, H, Walker, T G, Hopster, H, Scott, J C, Weller, D, and Pappas, D P. 1993. "Canted magnetic moments at the Gd(0001) surface". United States. https://www.osti.gov/servlets/purl/6543693.
@article{osti_6543693,
title = {Canted magnetic moments at the Gd(0001) surface},
author = {Li, Dongqi and Zhang, Jiandi and Dowben, P A and Garrison, K and Johnson, P D and Tang, H and Walker, T G and Hopster, H and Scott, J C and Weller, D and Pappas, D P},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6543693}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}

Conference:
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