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Search Publications by: Daniel T Pierce (Assoc)

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Displaying 276 - 300 of 308

Spin Dependence of Electronic Surface Resonance Scattering from W(100)

January 1, 1981
Author(s)
Daniel T. Pierce, Robert Celotta, G Wang, E McRae
In polarized low energy electron diffraction (PLEED) from W(100) at energies of 2 to 9 eV and incident angles 15 degrees < θ < 45 degrees, we observe a spin-splitting of the resonance sequence of peaks which converge on the (01) beam threshold. For θ > 26

GaAs Spin Polarized Electron Source

April 1, 1980
Author(s)
Daniel T. Pierce, Robert Celotta, G Wang, W Unertl, A Galejs, C Kuyatt, S Mielczarek
The design, construction, operation, and performance of a spin polarized electron source utilizing photoemission from negative electron affinity (NEA) GaAs are presented in detail. A polarization of 43plus or minus}2% is produced using NEA GaAs (100). The

A Polarized LEED Study of Surface Magnetism

January 1, 1980
Author(s)
Daniel T. Pierce, Robert Celotta, G Wang, G P. Felcher, S Bader, K Miyano
The surface magnetization of ferromagnetic Ni(110) has been observed via the use of a spin polarized electron beam. The spin dependence of the scattered electron intensity was measured as a function of external magnetic field strength and temperature.

Spin and Energy Analyzed Photoemission: A Feasibility Analysis

November 1, 1979
Author(s)
Daniel T. Pierce, C Kuyatt, Robert Celotta
New scientific opportunities, particularly for investigation of surface magnetism, will be provided by spin and energy analyzed photoemission. Electron-optical conservation laws and phase space concepts are summarized and applied to determine the

Surface Magnetization of Ferromagnetic Ni(110): A Polarized LEED Experiment

September 3, 1979
Author(s)
Robert Celotta, Daniel T. Pierce, G Wang, S Bader, G P. Felcher
The magnetic field dependence (hysteresis curve) and the temperature dependence of the magnetization at a Ni(110) surface was measured by polarized low-energy electron diffraction. The diffracted intensities are spin dependent by a few percent. The