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Topic Area: Condensed Matter Physics

Displaying records 91 to 100 of 110 records.
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91. 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

92. 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

93. 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

94. Ising Models for Order-Disorder Transition in an Adsorbed Overlayer
Topic: Condensed Matter Physics
Published: 3/2/1980
Author: T M Lu
Abstract: 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 correl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620177

95. Core-Level Satellites Structure in Photoemission Spectra of Transient Metals
Topic: Condensed Matter Physics
Published: 12/1/1979
Authors: J Tersoff, L Falicov, David R. Penn
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620182

96. Bound Hole Pairs in Ni: Evidence from Photoemissions
Topic: Condensed Matter Physics
Published: 11/1/1979
Author: David R. Penn
Abstract: I show that the Ni d-band density of states contains a peak due to excitations of bound hole pairs. The density of states is observed directly in photoemission experiments which show a satellite peak below the bottom of the d bands.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620176

97. Effect of Bound Hole Pairs on the d-Band Photoemission Spectrum of Ni
Topic: Condensed Matter Physics
Published: 4/2/1979
Author: David R. Penn
Abstract: It is shown that the spectral density of the Ni d electrons contains a peak due to excitations of bound hole pairs. The spectral density is observed directly in photoemission experiments which show a satellite peak below the bottom of the d bands. Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620171

98. Spin Polarized Electrons and Transition Metal Magnetism
Topic: Condensed Matter Physics
Published: 9/1/1977
Author: David R. Penn
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620150

99. Coulomb term U and 5f electron excitation energies for the metals actinium to berkelium
Topic: Condensed Matter Physics
Published: 10/15/1976
Authors: J F Herbst, R E Watson
Abstract: Relativistic Hartree-Fock-Wigner-Seitz band calculations have been performed for the actinide metals Ac through Bk in order to estimate the Coulomb term U and 5 f electron excitation energies. Our calculations predict that the tetravalent state (four ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620123

100. Core level shifts of rare-gas atoms implanted in the noble metals
Topic: Condensed Matter Physics
Published: 7/1/1976
Authors: R E Watson, J F Herbst, J W Wilkins
Abstract: By means of soft-x-ray photoemission Citrin and Hamann have observed core level shifts of Ne, Ar, Kr, and Xe atoms implanted in the noble metals and have constructed a theoretical model with which to interpret the results. We describe calculations e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620118



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