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Topic Area: Nanophysics
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Displaying records 11 to 16.
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11. Making Mn Substitutional Impurities in InAs using a Scanning Tunneling Microscope
Topic: Nanophysics
Published: 9/29/2009
Authors: Young J. Song, Steven C. Erwin, Gregory M. Rutter, Phillip N. First, Nikolai B Zhitenev, Joseph A Stroscio
Abstract: We describe in detail a new atom-by-atom exchange manipulation technique using a scanning tunneling microscope probe. As-deposited Mn adatoms (Mnad) are exchanged one-by-one with surface In atoms (Insu) to create a Mn surface-substitutional (MnIn) a ...

12. Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene
Topic: Nanophysics
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 ...

13. Real Space Mapping of Magnetically Quantized Graphene States
Topic: Nanophysics
Published: 8/8/2010
Authors: Joseph A Stroscio, D. L. Miller, Kevin Kubista, Gregory M. Rutter, Ming Ruan, Walt A. de Heer, Markus Kindermann, Phillip N. First
Abstract: In a perpendicular magnetic field, the quantized independent-electron states (Landau levels) of graphene are degenerate in the valley degree of freedom and nearly-so in spin. The momentum-space valley degeneracy traces to the equivalence of the A a ...

14. Strong Casimir force reduction by metallic surface nanostructuring
Topic: Nanophysics
Published: 9/27/2013
Authors: Francesco Intravaia, Stefan T. Koev, Il Woong Jung, Albert A. Talin, Paul S Davids, Ricardo Decca, Vladimir A Aksyuk, Diego A. R. Dalvit, Daniel Lopez
Abstract: The Casimir force is a quantum-mechanical interaction arising from vacuum fluctuations of the electromagnetic (EM) field and is technologically significant in micro- and nanomechanical systems. Despite rapid progress in nanophotonics, the goal of e ...

15. Studies of photoconductivity and FET behavior in examining drift mobility, surface depletion, and transient effects in Si-doped GaN nanowires examined in vacuum and air
Topic: Nanophysics
Published: 5/3/2013
Authors: Norman A Sanford, Lawrence H Robins, Paul Timothy Blanchard, K. Soria, B. Klein, Kristine A Bertness, John B Schlager, Aric Warner Sanders
Abstract: Variable intensity photoconductivity (PC) performed under vacuum at 325 nm was used to estimate drift mobility and negative surface charge density sigma for c-axis oriented Si-doped GaN nanowires (NWs). In this approach we assumed that sigma was res ...

16. Temperature dependence of the diffusive conductivity of bilayer graphene
Topic: Nanophysics
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 ...

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