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You searched on: Topic Area: Condensed Matter Physics

Displaying records 1 to 10 of 111 records.
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1. Weak Localization, Spin Relaxation, and Spin-Diffusion: Crossover Between Weak and Strong Rashba Coupling Limits
Topic: Condensed Matter Physics
Published: 9/17/2014
Authors: Yasufumi Araki, Guru Bahadur S Khalsa, Allan H. MacDonald
Abstract: Disorder scattering and spin-orbit coupling are together responsible for the diffusion and relaxation of spin-density in time-reversal invariant systems. We study spin-relaxation and diffusion in a two-dimensional electron gas with Rashba spin-orbit ...

2. Nonvolatile switching of Josephson coupling with a pseudo-spin valve barrier
Topic: Condensed Matter Physics
Published: 5/28/2014
Authors: Burm Baek, William H Rippard, Samuel Paul Benz, Stephen E Russek, Paul David Dresselhaus
Abstract: The quantum behavior of Josephson junctions is often exploited to produce superconducting devices with outstanding performance. Josephson junctions can also be used in circuits that perform logic operations in picoseconds and may enable high-perfo ...

3. Parametric pumping of precession modes in ferromagnetic nanodisks
Topic: Condensed Matter Physics
Published: 3/26/2014
Authors: Feng Guo, Lyubov Belova, Robert D McMichael
Abstract: We report parametric excitation of magnetic precession modes in nanodisks using a parallel pumping configuration. The excitations are detected using a ferromagneitc resonance force microscopy method, and the parallel-pumped spectra reveal nonlinear c ...

4. Head and Media Challenges for 3 Tb/in^u2^ Microwave Assisted Magnetic Recording
Topic: Condensed Matter Physics
Published: 2/3/2014
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mike Mallary, Kumar Srinivasan, Gerado Bertero, Dan Wolf, Christian Kaiser, Michael Chaplin, Mahendra Pakala, Leng Qunwen, Yiming Wang, Carl Elliot, Lui Francis
Abstract: A specific design for Microwave Assisted Magnetic Recording (MAMR) at about 3Tb/in^u2^ (0.47 Tb/cm^u2^ or 4.7 Pb/m^u2^) is discussed in detail to highlight the challenges of MAMR and to contrast its requirements with conventional Perpendicular Magnet ...

5. Sub-100 mK cooling using normal-metal¿insulator¿superconductor tunnel junctions
Topic: Condensed Matter Physics
Published: 12/15/2013
Authors: Peter J Lowell, Galen C O'Neil, Jason M Underwood, Xiaohang Zhang, Joel Nathan Ullom
Abstract: Normal-metal∖insulator∖superconductor (NIS) junctions can be used as solid-state refrigerators since the hottest electrons preferentially tunnel from the normal metal into the superconductor. In this paper, we present NIS junctions op ...

6. Reply to "Comment on: 'Ultrafast Demagnetization Measurements Using Extreme Ultraviolet Light: Comparison of Electronic and Magnetic Contributions'Š
Topic: Condensed Matter Physics
Published: 9/4/2013
Authors: Justin M Shaw, Thomas J Silva, Hans Toya Nembach, Emrah Turgut, Patrik Grychtol, Chan La-O-Vorakiat, Henry Kapteyn, Margaret M. Murnane, Stefan Mathias, Martin Aeschlimann, Claus Schneider, Daniel E. Adams
Abstract: In the following, we show that the conclusions of our article titled "Ultrafast Demagnetization Measurements Using Extreme Ultraviolet Light: Comparison of Electronic and Magnetic Contributions" are correct. The Comment of Vodungbo {I}et al.{/I} arg ...

7. Kiloampere, variable-temperature, critical-current measurements of high-field superconductors
Series: Journal of Research (NIST JRES)
Report Number: 118.015
Topic: Condensed Matter Physics
Published: 8/19/2013
Authors: Loren F Goodrich, Najib Cheggour, Theodore C Stauffer, Bernard J Filla, Xifeng Lu
Abstract: We review variable-temperature, transport critical-current (Ic) measurements made on commercial superconductors over a range of critical currents from less than 0.1 A to about 1 kA. We have developed & used a number of systems to make these measu ...

8. Properties of magnetic barrier structures for superconducting-magnetic hybrid Josephson junctions
Topic: Condensed Matter Physics
Published: 7/7/2013
Authors: Burm Baek, Samuel Paul Benz, William H Rippard, Stephen E Russek, Paul David Dresselhaus, Horst Rogalla, Matthew R Pufall
Abstract: If Josephson and spintronic technologies can be successfully integrated to produce a cryogenic memory that can be controlled with single-flux quantum pulses, then they may enable ultra-low-power, high-speed computing. We have developed hybrid Josephs ...

9. 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 ...

10. Graphene Epitaxial Growth on SiC(0001) for Resistance Standards
Topic: Condensed Matter Physics
Published: 6/3/2013
Authors: Mariano A. Real, Eric Lass, Fan-Hung H. Liu, Tian T. Shen, George R Jones, Johannes A Soons, David B Newell, Albert Davydov, Randolph E Elmquist
Abstract: A well-controlled technique for high-temperature epitaxial growth on 6H-SiC(0001) substrates is shown to allow development of monolayer graphene that exhibits promise for precise metrological applications. Face-to-face (FTF) and face-to-graphite (FTG ...

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