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Topic Area: Condensed Matter Physics
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Displaying records 81 to 90 of 106 records.
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81. 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 ...

82. Spin Polarized Electrons and Transition Metal Magnetism
Topic: Condensed Matter Physics
Published: 9/1/1977
Author: David R. Penn

83. Spin Polarized Secondary Electrons: Theory
Topic: Condensed Matter Physics
Published: 1/1/1986
Authors: David R. Penn, S Apell, S Girvin
Abstract: We show that the spin polarization of the secondary electrons, P(E), yields useful information about the electron-electron interaction. The ration of majority to minority spin lifetimes is related to the measured values of P(E) by {tau}^d{uarr}^(E)/ ...

84. Spin transport parameters in metallic multilayers determined by ferromagnetic resonance measurements of spin-pumping
Topic: Condensed Matter Physics
Published: 4/19/2013
Authors: Carl T Boone, Hans Toya Nembach, Justin M Shaw, Thomas J Silva
Abstract: We measured spin-transport in nonferromagnetic (NM) metallic multilayers from the contribution to damping due to spin pumping from a ferromagnetic Co^d90^Fe^d10^ thin film. The multilayer stack consisted of NM^d1^/NM^d2^/Co^d90^Fe^d10^(2 nm)/NM^d2^/N ...

85. Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers
Topic: Condensed Matter Physics
Published: 1/29/2010
Authors: William H Rippard, Alina M Deac, Matthew R Pufall, Justin M Shaw, Mark W Keller, Stephen E Russek, Gerrit E Bauer, Claudio Serpico
Abstract: We have measured spin-transfer-induced dynamics in magnetic nanocontact devices having a perpendicularly magnetized Co/Ni free layer and an in-plane magnetized CoFe fixed layer. The frequencies and powers of the excitations agree well with the predic ...

86. 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 ...

87. Surviving the Transition
Topic: Condensed Matter Physics
Published: 10/31/2008
Author: Kristian Helmerson
Abstract: Observations of the birth of a superfluid have uncovered details of the microphysics of phase transitions. Whether these results can be used to model such trnsitions in the early Universe is an open question.

88. Temperature dependence of the diffusive conductivity of bilayer graphene
Topic: Condensed Matter Physics
Published: 8/24/2010
Authors: Shaffique Adam, Mark D Stiles
Abstract: Assuming diffusive carrier transport and employing an effective medium theory, we calculate the temperature dependence of bilayer graphene conductivity due to Fermi-surface broadening as a function of carrier density. We find that the temperature d ...

89. Temperature-Dependent Behavior of PbSc^d1/2^Nb^d1/2^O^d3^ From First Principles
Topic: Condensed Matter Physics
Published: 7/1/2001
Authors: Eric J Cockayne, Benjamin P Burton, L Bellaiche
Abstract: We study the ferroelectric phase transition in PbSc1/2Nb1/2O3 (PSN) using a first-principles effective Hamiltonian approach. Results for PSN with NaCl-type ordering of Sc and Nb on the B sites shows that a Pb-centered effective Hamiltonian is approp ...

90. The Cooper Pair Transistor
Topic: Condensed Matter Physics
Published: 9/17/2010
Author: Jose Alberto Aumentado
Abstract: The Cooper pair transistor (CPT) is a superconducting electrometer that has applications in quantum information as well as fundamental superconductivity studies. Since it operates in a near-dissipationless mode, it has potential as a minimally inva ...

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