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Topic Area: Electron Physics

Displaying records 21 to 30 of 98 records.
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21. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906991

22. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907582

23. 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.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906749

24. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906100

25. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905912

26. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905348

27. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904997

28. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904929

29. Viewpoint on "Symmetry breaking in the zero-energy Landau level in bilayer graphene"
Topic: Electron Physics
Published: 2/8/2010
Author: Shaffique Adam
Abstract:
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904893

30. Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers
Topic: Electron 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903981



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