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Topic Area: Condensed Matter Physics

Displaying records 71 to 80 of 97 records.
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71. Anomalous Electron Energy Loss in Small Spheres
Topic: Condensed Matter Physics
Published: 1/1/1983
Authors: David R. Penn, S Apell
Abstract: In analogy to the case of optical absorption, it is shown that inclusion of non-local surface effects results in a very large contribution to the energy loss of fast electrons scattered by a sphere. The scattering is found to be predominantly in the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620234

72. The Diamond (111) Surface: A Dilemma Resolved
Topic: Condensed Matter Physics
Published: 1/1/1983
Authors: B B Pate, B Waclawski, P M Stefan, C Binns, T Ohta, M H Hecht, P J Jupiter, M L Shek, Daniel Thornton Pierce, Nils Swanson, Robert Celotta, I. Lindau, W E Spicer
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620221

73. Surface Photoeffect in Small Spheres
Topic: Condensed Matter Physics
Published: 9/15/1982
Authors: David R. Penn, R W Rendell
Abstract: 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 elec ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620219

74. Dispersion Relation Approach to the X-Ray Edge Problem
Topic: Condensed Matter Physics
Published: 12/15/1981
Authors: David R. Penn, S Girvin, G D Mahan
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620211

75. Hall Voltage Dependence on Inversion Layer Geometry in the Quantum Hall-Effect Regime
Topic: Condensed Matter Physics
Published: 6/15/1981
Authors: R W Rendell, S Girvin
Abstract: A calculation of the Hall voltage is presented within a model of a finite two-dimensional inversion layer. An explicit form for the electric field is obtained and this is found to have a power-law singularity in the corners of the inversion layer. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620201

76. Resonant satellites in photoemission and Auger spectra of d-band metals
Topic: Condensed Matter Physics
Published: 3/1/1981
Authors: S Girvin, David R. Penn
Abstract: 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 s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620208

77. New Field Theory Formulation of Localized States in Disordered Systems
Topic: Condensed Matter Physics
Published: 1/1/1981
Authors: S Girvin, R W Rendell, Garnett W Bryant
Abstract: 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 poss ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620214

78. Spin Dependence of the Electron Mean Free Path in Fe, Co, and Ni
Topic: Condensed Matter Physics
Published: 12/22/1980
Authors: R W Rendell, David R. Penn
Abstract: 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 i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620190

79. Theory of Coherence Effects in Photoinduced Auger Events: Resonant Satellites in Metals with Filled d-Bands
Topic: Condensed Matter Physics
Published: 10/15/1980
Authors: S Girvin, David R. Penn
Abstract: This paper describes a theory of the Auger effect which treats the entire process of core-level excitation followed by decay of the core hole as a coherent sequence of events. We present an approximate analytic solution to the model recently introdu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620193

80. The Mean Free Paths of Very Low Energy Electrons: the Effects of Exchange and Correlation
Topic: Condensed Matter Physics
Published: 9/15/1980
Author: David R. Penn
Abstract: The mean free paths of low-energy electrons in a free-electron-like material are calculated using a screened electron-electron interaction which is antisymmetrized for the case of parallel-spin electrons. Calculations are carried out for several diff ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620183