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Topic Area: Condensed Matter Physics

Displaying records 21 to 30 of 110 records.
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21. Magnetization textures in NiPd nanostructures
Topic: Condensed Matter Physics
Published: 9/15/2011
Authors: Jean-Yves Chauleau, Benjamin James McMorran, R. Belkhou, Nicolas Bergeard, Tevfik Mente?, Miguel Angel Nino, Andrea Locatelli, John Unguris, Stanislas Rohart, Jacques Miltat, Andre Thiaville
Abstract: We have observed peculiar magnetization textures in Ni80Pd20 nanostructures, by three different imaging techniques (MFM, XMCD-PEEM and SEMPA). The appearance of diamond-like domains with strong lateral charges, and of weak stripes structures brings i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908604

22. Graphene-metal interconnect: an atomistic simulation
Topic: Condensed Matter Physics
Published: 8/11/2011
Authors: Alexander Y Smolyanitsky, Vinod K Tewary
Abstract: We develop a set of computationally efficient and accurate interatomic interactions for an atomistic simulation of the properties of graphene on nickel surface. The approach is based on the modified embedded atom method (MEAM) for the C-C and Ni-Ni i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908203

23. HIGHLY CHARGED ION INTERACTIONS WITH THIN INSULATING FILMS
Topic: Condensed Matter Physics
Published: 6/1/2011
Authors: Joshua M Pomeroy, Russell Lake, C E Sosolik
Abstract: The electrical conductance of magnetic tunnel junction (MTJ) devices whose ultra-thin aluminum oxide tunnel barrier was irradiated by highly charged ions (HCIs) increases linearly with the fluence of HCIs, while retaining a current-voltage relationsh ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906982

24. Perspective on Probing Metallic Ferromagnetism with Electrons
Topic: Condensed Matter Physics
Published: 3/21/2011
Author: Daniel Thornton Pierce
Abstract: This article presents a brief review of some of the many insights gained about metallic ferromagnetism using spin-polarized electrons as probes. Aspects of metallic ferromagnetism discussed include spin-dependent electronic structure, spin-dependent ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906729

25. Thermo-Magneto-Electrical Measurement Platform
Topic: Condensed Matter Physics
Published: 10/19/2010
Authors: Kurt Pernstich, Curt A Richter, David J Gundlach
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907222

26. The Cooper Pair Transistor
Topic: Condensed Matter Physics
Published: 9/17/2010
Author: Jose Alberto Aumentado
Abstract: The Cooper pair transistor (CPT) is a superconducting electrometer that has applications in quantum information as well as fundamental superconductivity studies. Since it operates in a near-dissipationless mode, it has potential as a minimally inva ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902021

27. Effects of Edge Magnetism and External Electric Field on Energy Gaps in Multilayer Graphene Nanoribbons
Topic: Condensed Matter 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

28. Theory for a Dissipative Droplet Soliton Excited by a Spin Torque Nanocontact
Topic: Condensed Matter Physics
Published: 8/30/2010
Authors: Mark Hoefer, Thomas J Silva, Mark W Keller
Abstract: A distinct type of solitary wave is predicted to form in spin torque oscillators when the free layer has a sufficiently large perpendicular anisotropy. In this structure, which is a dissipative version of the conservative droplet soliton originally s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905924

29. Temperature dependence of the diffusive conductivity of bilayer graphene
Topic: Condensed Matter Physics
Published: 8/24/2010
Authors: Shaffique Adam, Mark D Stiles
Abstract: Assuming diffusive carrier transport and employing an effective medium theory, we calculate the temperature dependence of bilayer graphene conductivity due to Fermi-surface broadening as a function of carrier density. We find that the temperature d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904658

30. Non-white frequency noise in spin torque oscillators and its effect on spectral linewidth
Topic: Condensed Matter Physics
Published: 8/1/2010
Authors: Mark W Keller, Matthew R Pufall, William H Rippard, Thomas J Silva
Abstract: We measure the power spectral density of frequency fluctuations from the output voltage waveform of nanocontact spin torque oscillators over timescales up to 50 ms. We facilitate digitization of the waveform by using a mixer to convert oscillator sig ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905650



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