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Topic Area: Electron Physics

Displaying records 21 to 30 of 100 records.
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21. Effect of interactions on edge property measurements in magnetic multilayers
Topic: Electron Physics
Published: 2/25/2011
Authors: Meng Zhu, Robert D McMichael
Abstract: This paper reports effects of inter-film interactions on static and dynamic magnetization behavior at film edges in magnetic trilayer stripe arrays under transverse applied fields. The trilayers consist of two magnetic films of Ni80Fe20, 10 nm and 2 ...

22. Enhanced magnetization drift velocity and current polarization in (CoFe)_{1-x}Ge_{x} alloys
Topic: Electron Physics
Published: 2/17/2011
Authors: Meng Zhu, Brian D Soe, Robert D McMichael, Matthew Carey, Stefan Maat, Jeffrey R Childress
Abstract: A spin wave Doppler technique is used to measure the drift velocity of the magnetization in current-carrying (CoFe)_{1-x}Ge_{x} alloys. For a current density of 10^11 A/m2, we obtain a large enhancement of drift velocity from 3.1+/-0.2 m/s for CoFe ...

23. Electron Vortex Beams with High Quanta of Orbital Angular Momentum
Topic: Electron Physics
Published: 1/14/2011
Authors: Benjamin James McMorran, Amit Kumar Agrawal, Ian M. Anderson, Andrew A Herzing, Henri J Lezec, Jabez J McClelland, John Unguris
Abstract: Analogous to vortices in light optical beams, electron optical beams with helical wavefronts carry orbital angular momentum and promise new capabilities for electron microscopy and other applications. We use nanofabricated diffraction holograms in an ...

24. NIST Simulation of E-beam Inspection and CD-SEM in-line metrology: Final Report
Topic: Electron Physics
Published: 1/1/2011
Author: John S Villarrubia
Abstract: This report summarizes results from a two-year project to develop a simulator for electron beam inspection and critical dimension scanning electron microscope (SEM) inline metrology tools. The development attempts to improve on prior simulators and d ...

25. Torsion Balance Test of Couplings to Spin
Topic: Electron Physics
Published: 12/23/2010
Authors: Blayne R Heckel, Eric G Adelberger, William A Terrano, Claire Elizabeth Cramer
Abstract: This article describes constraints on possible new spin-coupled interactions using a torsion pendulum with approximately 1 × 1023 polarized electrons.

26. Current induced torques in the presence of spin-orbit coupling
Topic: Electron Physics
Published: 9/17/2010
Authors: Paul M Haney, Mark D Stiles
Abstract: In systems with strong spin-orbit coupling, the relationship between spin-transfer torque and the divergence of the spin current is generalized to a relation between spin transfer torques, total angular momentum current, and mechanical torques. I ...

27. Effects of Edge Magnetism and External Electric Field on Energy Gaps in Multilayer Graphene Nanoribbons
Topic: Electron Physics
Published: 9/14/2010
Authors: Bhagawan Sahu, Hongki Min, Sanjay K Banerjee
Abstract: Using a first principles density functional theory, we study electronic structure of multilayer graphene nanoribbons as a function of the ribbon widths and an external electric fields. We consider two types of edges (armchair and zigzag) and each wit ...

28. Band Structure of ABC-Stacked Graphene Trilayers
Topic: Electron Physics
Published: 7/9/2010
Authors: Fan Zhang, Bhagawan Sahu, Hongki Min, Allan H. MacDonald
Abstract: The ABC-stacked N-layer-graphene family of two-dimensional electron systems is described at low energies by two remarkably flat bands with Bloch states that have strongly momentum-dependent phase differences between carbon \pi-orbital amplitudes on ...

29. Frequency-Dependent Charge-Pumping: The Depth Question Revisited
Topic: Electron Physics
Published: 5/1/2010
Authors: Fan Zhang, Kin P Cheung, Jason P Campbell, John S Suehle
Abstract: A popular defect depth-profiling technique, frequency-dependent charge-pumping is carefully re-examined. Without complicated math of modeling, the physics behind the technique is examined clearly. It is shown that there is no unique relationship betw ...

30. NIST Simulation of E-beam Inspection and CD-SEM in-line metrology: Interim Report for 1st year of project
Topic: Electron Physics
Published: 3/1/2010
Author: John S Villarrubia
Abstract: This report summarizes results from the first year of a 2-year project to develop a simulator for electron beam (e-beam) inspection and critical dimension-scanning electron microscope (CD-SEM) inline metrology tools. The goal is to improve on previou ...

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