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You searched on: Topic Area: Condensed Matter Physics

Displaying records 11 to 20 of 44 records.
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11. 99.996% 12C films enriched and deposited in situ
Topic: Condensed Matter Physics
Published: 6/28/2013
Authors: Kevin Joseph Dwyer, Joshua M Pomeroy, David S Simons
Abstract: A mass selected ion beam system is used to isotopically enrich and deposit thin films, which are measured to be 99.9961(4)% 12C. In solid state quantum information, isotopic enrichment of materials has allowed significant improvements in the coheren ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913398

12. Controlling the Competition between Optically Induced Ultrafast Spin-Flip Scattering and Spin Transport in Magnetic Multilayers
Topic: Condensed Matter Physics
Published: 5/7/2013
Authors: Justin M Shaw, Hans Toya Nembach, Thomas J Silva, Margaret M. Murnane, Henry C. Kapteyn, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Stefan Mathias, Patrik Grychtol, Chan La-O-Vorakiat, Dennis Rudolf, Roman Adam
Abstract: The study of ultrafast dynamics in magnetic materials provides rich opportunities for greater fundamental understanding of correlated phenomena in solid-state matter, because many of the basic microscopic mechanisms involved are as-yet unclear and ar ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912515

13. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912988

14. Spin-Transfer Nano-Oscillators
Topic: Condensed Matter Physics
Published: 1/7/2013
Authors: Stephen E Russek, Ranko R. Heindl, Thomas Cecil, William H Rippard
Abstract: Spin transfer nano-oscillators are small multilayer magnetic devices that undergo microwave oscillations and output a microwave voltage when a bias current is applied. The oscillation frequency is tunable, over a range of 0.5 GHz to 225 GHz, by vary ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902217

15. Ultrafast element-specific magnetization Dynamics of complex magnetic materials on a table-top
Topic: Condensed Matter Physics
Published: 12/21/2012
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Chan La-O-Vorakiat, Henry C. Kapteyn, Margaret M. Murnane, Stefan Mathias, Roman Adam, Patrik Grychtol, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Dennis Rudolf
Abstract: We review recent progress in femtosecond magnetization dynamics probed by extreme ultraviolet pulses from high-harmonic generation. In a transverse magneto-optical Kerr geometry, we establish an ultrafast, element-specific experimental capability - ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904322

16. Switching Distributions for Perpendicular Spin Torque Devices within the Macrospin Approximation
Topic: Condensed Matter Physics
Published: 11/30/2012
Authors: William H. Butler, William H Rippard, Stephen E Russek, Ranko R. Heindl
Abstract: We model "soft" error rates for writing (WSER) and for reading (RSER) for spin-torque memory devices that have a free layer with easy axis perpendicular to the film plane by solving the Fokker-Planck equation for the probability distribution of the a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908646

17. Epitaxial (111) Films of Cu, Ni, and Cu^dx^Ni^dy^ on {alpha}{long dash}Al^d2^O^d3^(0001) for graphene growth by chemical vapor deposition
Topic: Condensed Matter Physics
Published: 9/21/2012
Authors: David L. Miller, Mark W Keller, Justin M Shaw, Ann Chiaramonti Chiaramonti Debay, Robert R Keller
Abstract: Films of (111)-textured Cu, Ni, and Cu^dx^Ni^dy^ were evaluated as substrates for chemical vapor deposition of graphene. A metal thickness of 400 nm to 700 nm was sputtered onto a substrate of {alpha}{long dash}Al^d2^O^d3^(0001) at temperatures of {I ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911229

18. Anisotropic frequency response of spin-torque oscillators with applied field polarity and direction
Topic: Condensed Matter Physics
Published: 9/4/2012
Authors: Matthew R Pufall, William H Rippard, Stephen E Russek, Eric Raymond Evarts
Abstract: We have measured spin-torque-driven oscillations of Ni80Fe20 free-layer nanocontacts as a function of field direction. For a given field axis angle (10◦ from the surface normal) and magnitude, simply changing the field polarity can significantl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911176

19. Ultrafast manetization enhancement in metallic multilayers driven by superdiffusive spin current
Topic: Condensed Matter Physics
Published: 9/4/2012
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Dennis Rudolf, Chan La-O-Vorakiat, Marco Battiato, Roman Adam, Emrah Turgut, Stefan Mathias, Margaret M. Murnane, Henry C. Kapteyn, Claus M. Schneider
Abstract: Uncovering the physical mechanisms that govern ultrafast charge and spin dynamics is crucial for understanding correlated matter as well as the fundamental limits of ultrafast spin-based electronics. Spin dynamics in magnetic materials can be driven ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911061

20. Propagation and control of nano-scale, magnetic droplet solitons
Topic: Condensed Matter Physics
Published: 6/11/2012
Authors: Thomas J Silva, Mark Hoefer, Matteo Sommacal
Abstract: The propagation and controlled manipulation of strongly nonlinear, two-dimensional solitonic states in a thin, anisotropic ferromagnet is theoretically demonstrated. It has been recently proposed that spin polarized currents in a nanocontact device c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910627



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