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Displaying 101 - 120 of 120

Scanning Electron Microscopy with Polarized Electrons

April 15, 1987
Author(s)
John Unguris, G Hembree, Robert Celotta, Daniel T. Pierce
The recent joining of scanning electron microscopy and electron spin polarization analysis has greatly improved the ability to study magnetic microstructure. By measuring the spin polarization of secondary electrons, scanning electron microscopy with

Low Energy Diffuse Scattering Electron Spin Polarization Analyzer

January 1, 1986
Author(s)
John Unguris, Daniel T. Pierce, Robert Celotta
A new, compact (approximately fist sized), efficient electron-spin analyzer is described. It is based on low-energy (150 eV) diffuse scattering from a high-Z target, for example, an evaporated polycrystalline Au film opaque to the incident electron beam

Spin-Polarized Inverse Photoelectron Spectroscopy of Solid Surfaces: Ni(110)

October 4, 1982
Author(s)
John Unguris, A Seiler, Robert Celotta, Daniel T. Pierce, Philip Johnson, N. Smith
Inverse photoemission spectra have been measured on Ni(110) at 9.7-eV photon energy with a spin-polarized electron source. Consistent with band theory, a d-band-derived peak is observed just above the Fermi level that corresponds to transitions to minority

Spin and Energy Analyzed Secondary Electron Emission from a Ferromagnet

July 5, 1982
Author(s)
John Unguris, Daniel T. Pierce, A Galejs, Robert Celotta
Measurements are presented of the energy dependence of the spin polarization of low-energy (0.5-25 eV) secondary electrons when a 500-eV primary beam is incident on an iron-based ferromagnetic glass. The polarization of the lowest-energy electrons is found

Absorbed Current Electron Spin Polarization Detector

October 1, 1981
Author(s)
Daniel T. Pierce, S Girvin, John Unguris, Robert Celotta
The principle of spin analysis by means of measurement of the spin dependent absorption of a polarized electron beam is presented. The spin dependent signal is enhanced relative to the spin averaged signal at an energy near which the secondary yield is