U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Physics

Condensed matter

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
  • Published Date
Displaying 1126 - 1150 of 1237

Surface Photoeffect in Small Spheres

September 15, 1982
Author(s)
David R. Penn, R W. Rendell
A new method is developed to calculate the photoabsorption and photoyield of small spheres. Numerical results are presented for the case of free-electron spheres for photon energies below the plasmon energies. It is found that the excitation of electron

Dispersion Relation Approach to the X-Ray Edge Problem

December 15, 1981
Author(s)
David R. Penn, S Girvin, G D. Mahan
We present a dispersion relation formulation of the open-line amplitude for the x-ray edge problem within the contact potential model. Using both multiple-scattering and determinant techniques, we find that to a very good approximation the many-body

Surface Enhanced Photoadsorption and Photoyield in Small Spheres

October 12, 1981
Author(s)
David R. Penn, R W. Rendell
Calculations of the photoabsorption and photyield of small metal spheres are reported for photon energies below the plasmon energy. It is found that the excitation of electron-hole paris due to the presence of the surface results in (1) enhancements in the

Resonant satellites in photoemission and Auger spectra of d-band metals

March 1, 1981
Author(s)
S Girvin, David R. Penn
Photoemission and Auger electron spectroscopy are powerful tools in the study of the electronic and magnetic properties of d band metals. In certain instances experimental spectra can be directly interpreted as a measure of some one body density of states

Polarized Low Energy Electron Diffraction (PLEED) from W(100)

February 15, 1981
Author(s)
G Wang, Robert Celotta, Daniel T. Pierce
A set of polarized low-energy-electon diffraction (PLEED) data from a W(100) surface measured using a polairzed electron beam is presented. The data include conventional LEED profilesI(E,θ) as well as S(Eθ profiles which measure the spin dependence of the

New Field Theory Formulation of Localized States in Disordered Systems

January 1, 1981
Author(s)
S Girvin, R W. Rendell, Garnett W. Bryant
We present a new field theoretic formulation of the quantum mechanics of disordered systems. The problem is converted to an explicit field theory by changing variables in the functional integral over all random potentials to an integral over all possible

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

Spin Dependence of the Electron Mean Free Path in Fe, Co, and Ni

December 22, 1980
Author(s)
R W. Rendell, David R. Penn
Spin-dependent electron mean free paths as a function of the hot electron energy are calculated for Fe, Co, and Ni. The difference in mean free paths of electrons for spin parallel and antiparallel to the majority spin direction of the ferromagnet is found

Ising Models for Order-Disorder Transition in an Adsorbed Overlayer

March 2, 1980
Author(s)
T M. Lu
Based on a 2D zero field anti-ferromagnetic Ising model, we obtain a relation between the angular distribution of intensity of a LEED superlattice beam from an adsorbed lattice gas with nearest-neighbor repulsive interaction and the spin-spin correlation

Ultraviolet Photoemission Spectroscopy of Pd-Si Glasses

February 1, 1980
Author(s)
B Waclawski, D S. Boudreaux
In order to determine systematic changes in the density of states with alloy composition, photoelectron spectra at hv=21.2 eV were measured for several amorphous alloys based on the well-known Pd-Si glass system. Three binary alloys with 15, 20, and 25 at

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.
Was this page helpful?