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Displaying records 11 to 20 of 273 records.
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11. Spin-scattering rates in metallic thin films measured by ferromagnetic resonance damping enhanced by spin-pumping
Topic: Physics
Published: 6/12/2015
Authors: Carl T. Boone, Justin M Shaw, Hans Toya Nembach, Thomas J Silva
Abstract: We determined the spin-transport properties of Pd and Pt thin films by measuring the increase in ferromagnetic resonance damping due to spin-pumping in ferromagnetic (FM)-nonferromagnetic metal (NM) multilayers with varying NM thicknesses. The increa ...

12. On the 209Po Half-Life Error and Its Confirmation: A Critique
Topic: Physics
Published: 6/11/2015
Authors: Ronald Colle, Arthur M. Colle
Abstract: Collé, et al [(2007) Appl. Radiat Isot. 65, 728; (2014) J. Phys. G: Nucl. Part. Phys. 41, 105103], over the course of nearly a decade and with decay data from a period of 20.7 years, initially uncovered and then substantiated a 25 % error in the 209 ...

13. Suppression of Spin Pumping between Ni80Fe20 and Cu by a Graphene Interlayer
Topic: Physics
Published: 6/7/2015
Authors: William J. Gannett, Mark W Keller, Hans Toya Nembach, Thomas J Silva, Ann Chiaramonti Chiaramonti Debay
Abstract: Abstract We compare ferromagnetic resonance measurements of Py (Ni80Fe20) films sputtered onto Cu(111) with and without a graphene (Gr) interlayer grown by chemical vapor deposition before Py deposition. We find the expected damping enhancement f ...

14. Tunable Spin Qubit Coupling Mediated by a Multi-Electron Quantum Dot
Topic: Physics
Published: 6/4/2015
Authors: Vanita Srinivasa, Haitan Xu, Jacob M Taylor
Abstract: We present an approach for entangling electron spin qubits localized on spatially separated impurity atoms or quantum dots via a multi-electron, two-level quantum dot. The effective exchange interaction mediated by the dot can be understood as the si ...

15. Spectral homogenization techniques for the hyperspectral image projector
Topic: Physics
Published: 5/15/2015
Authors: Joseph Paul Rice, Logan E. Hillberry
Abstract: In an effort to improve technology for performance testing and calibration of multispectral and hyperspectral imagers, the National Institute of Standards and Technology (NIST) has been developing a Hyperspectral Image Projector (HIP) capable of proj ...

16. Geometrical Problems for Measuring the Daytime Luminance of Retroreflective Materials
Topic: Physics
Published: 5/14/2015
Authors: Maria E Nadal, Matthew Thiesse, Carl C Miller

17. New section of the HITRAN database: Collision-Induced Absorption (CIA)
Topic: Physics
Published: 5/14/2015
Author: Walter Joseph Lafferty
Abstract: This paper describes the addition of Collision-Induced Absorption (CIA) into the HITRAN compilation. The data from different sources have been cast into a consistent format and formalism. The implementation of these new spectral data into the H ...

18. Revealing Integrated Intensity Distributions (RIID)
Topic: Physics
Published: 5/14/2015
Author: John F. Lesoine
Abstract: Measuring the distribution of a light sources intensity fluctuations is important to many scientific disciplines. However, these integrated intensity distributions are hidden in noisy experimental photon counting data because of the photometric d ...

19. Confronting the Complexity of Commercial Carbon Nanotube Materials
Topic: Physics
Published: 5/13/2015
Authors: Luis Fernando Vargas Lara, Jack F Douglas
Abstract: The morphology of commercially available carbon nanotube materials is often much more complex than the term ,carbon nanotubeŠ (CNT) would imply. Commercial CNT materials are typically composed of roughly spherical CNT domains having a highly rami ...

20. Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors
Topic: Physics
Published: 2/20/2015
Authors: Johannes Hubmayr, James A Beall, Daniel Thomas Becker, Hsiao-Mei Cho, Gene C Hilton, Dale Li, David P Pappas, Jeffrey Lee Van Lanen, Mark Devlin, Kent David Irwin, Chris Groppi, Phillip Mauskopf
Abstract: We demonstrate photon-noise limited performance at sub-millimeter wavelengths in microwave kinetic inductance detectors (MKIDs) made of a new superconducting material, a TiN/Ti/TiN trilayer film. Optical coupling is achieved by use of feedhorns, a st ...

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