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You searched on: Topic Area: Condensed Matter Physics Sorted by: date

Displaying records 21 to 30 of 33 records.
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21. Interference of Single Photons from Two Separate Semiconductor Quantum Dots
Topic: Condensed Matter Physics
Published: 4/1/2010
Authors: Edward B. (Edward) Flagg, Andreas Muller, Sergey V Polyakov, Alexander E. Ling, Glenn Scott Solomon
Abstract: We demonstrate and characterize interference between discrete photons emitted by two separate semiconductor quantum dot states in different samples excited by a pulsed laser. Their energies are tuned into resonance using strain. The photons hav ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904921

22. Characterization of Soluble Anthradithiophene Derivatives
Topic: Condensed Matter Physics
Published: 3/18/2010
Authors: Brad Conrad, Calvin Chan, Marsha A. Loth, John E Anthony, David J Gundlach
Abstract: We will discuss the growth and electrical measurements of a newly developed, partially fluorinated anthradithiophene (F-ADT) derivative with tert-butyldiphenylsilyl (TBDMS) side groups. Single crystals of the material can be readily grown and device ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905386

23. Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers
Topic: Condensed Matter 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

24. Effects of magnetism and electric field on the energy gap of bilayer graphene nanoflakes
Topic: Condensed Matter Physics
Published: 1/13/2010
Author: Hongki Min
Abstract: We study the effect of magnetism and perpendicular external electric field strengths on the energy gap of length confined bilayer graphene nanoribbons (or nanobars) using a first principles density functional electronic structure method and a semi-lo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903804

25. Electrical Characterization of Soluble Anthradithiophene Derivatives
Topic: Condensed Matter Physics
Published: 11/19/2009
Authors: Brad Conrad, Calvin Chan, Marsha A. Loth, John E Anthony, David J Gundlach
Abstract: Organic semiconductors remain an active subject for device physics and material science because of their varied electrical properties and potential for low-cost, high-throughput roll-to-roll processing. Several high-mobility oligomers, such as pen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905388

26. Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene
Topic: Condensed Matter Physics
Published: 8/6/2009
Authors: Hongki Min, Allan H. MacDonald
Abstract: We predict that the optical conductivity of normal graphene multilayers is close to {sigma}^duni^=({pi}/2) e^u2^/h per layer over a broad range of frequencies. The origin of this behavior is an emergent chiral symmetry which is present in normal N-l ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902107

27. The-Final-State Symmetry of Na 1s Core-shell Excitons in NaCl and NaF
Topic: Condensed Matter Physics
Published: 7/8/2009
Authors: Eric L Shirley, K. P. Nagle, G T Seidler, T. T. Fister, J. A. Bradley, F. C. Brown
Abstract: We report measurements of the Na 1s contribution to the nonresonant inelastic x-ray scattering (NRIXS) from NaCl and NaF. Prior x-ray absorption studies have observed two pre-edge excitons in both materials. The momentum transfer-dependence (q-depe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901581

28. Josephson phase qubit circuit for the evaluation of advanced tunnel barrier materials
Topic: Condensed Matter Physics
Published: 11/21/2008
Authors: Jeffrey S. Kline, Haohua Wang, Seongshik Oh, John M Martinis, David P Pappas
Abstract: We have found that crystalline Josephson junctions have critical current density control problems which decrease circuit yield. We present a qubit circuit designed to accommodate a factor-of-five variation in critical current density for the evaluati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33165

29. Ultra-high resolution alpha particle spectroscopy using calorimetry
Topic: Condensed Matter Physics
Published: 9/23/2008
Authors: Robert Daniel Horansky, Joel Nathan Ullom, James A Beall, Gene C Hilton, Kent D Irwin, Don Dry, Beth Hastings, Stephen Lamont, Clifford R Rudy, Michael W Rabin
Abstract: Calorimetry has been used since the late 1700?s to measure the heat output of physical processes ranging from chemical reactions to the respiration of organisms . Calorimetry is performed by measuring the temperature change caused by heat release int ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32940

30. Shear Thinning Near the Critical Point of Xenon
Topic: Condensed Matter Physics
Published: 4/17/2008
Authors: Robert F Berg, Michael R Moldover, M Yao, G A Zimmerli
Abstract: We measured shear thinning, a viscosity decrease ordinarily associated with complex liquids, near the critical point of xenon. The data span the range of reduced shear rates: 0.001 < {gamma}{tau} < 700, where {gamma}{tau} is the shear rate scal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830987



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