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Browsing Faculty Research Publications (Physics) by Title

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Browsing Faculty Research Publications (Physics) by Title

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  • A quantum phase transition in a quantum external field: Superposing two magnetic phases 
    Rams, Marek M.; Zwolak, Michael; Damski, Bogdan (Nature Publishing Group, 2012-09-13)
    We study an Ising chain undergoing a quantum phase transition in a quantum magnetic field. Such a field can be emulated by coupling the chain to a central spin initially in a superposition state. We show that - by adiaba ...
  • Red electroluminescence from ZnGaS:Mn thin films 
    Dimitrova, V.; Draeseke, A.; Tate, J.; Yokoyama, T.; Clark, B. L.; Keszler, Douglas A. (American Institute of Physics, 1999-10-18)
    We demonstrate color shifting from the yellow to the red in the electroluminescence from (ZnGa)S:Mn films. We observe threshold voltages down to about 35 V, extremely low for such devices. We discuss the materials char ...
  • The rise and fall of redundancy in decoherence and quantum Darwinism 
    Riedel, C. Jess; Zurek, Wojciech H.; Zwolak, Michael (IOP Publishing Ltd and Deutsche Physikalische Gesellschaft, 2012-08-10)
    A state selected at random from the Hilbert space of a many-body system is overwhelmingly likely to exhibit highly non-classical correlations. For these typical states, half of the environment must be measured by an obse ...
  • Role of lone pair electrons in determining the optoelectronic properties of BiCuOSe 
    Sallis, S.; Piper, L. F. J.; Francis, J.; Tate, J.; Hiramatsu, H.; Kamiya, T.; Hosono, H. (American Physical Society, 2012-02)
    The electronic structure of the oxychalcogenides LaCuOSe and BiCuOSe has been studied using O K-edge x-ray emission spectroscopy, x-ray absorption spectroscopy, and density functional theory, in order to examine the effe ...
  • Seed Cone Anatomy of Cheirolepidiaceae (Coniferales): Reinterpreting Pararaucaria patagonica Wieland 
    Escapa, Ignacio H.; Rothwell, Gar W.; Stockey, Ruth A.; Cuneo, N. Ruben (Botanical Society of America, Inc., 2012-06-01)
    Premise of the study: Seed cone morphology and anatomy reflect some of the most important changes in the phylogeny and evolutionary biology of conifers. Reexamination of the enigmatic Jurassic seed cone Pararaucaria pata ...
  • Synthesis and charge transport studies of stable, soluble hexacenes 
    Purushothaman, Balaji; Parkin, Sean R.; Kendrick, Mark J.; David, Daniel; Ward, Jeremy W.; Yu, Liyang; Stingelin, Natalie; Jurchescu, Oana D.; Ostroverkhova, Oksana; Anthony, John E. (Royal Society of Chemistry, 2012-06-26)
    Acenes larger than pentacene are predicted to possess enticing electronic properties, but are insoluble and prone to rapid decomposition. Utilizing a combination of functionalization strategies, we present stable, soluti ...
  • Temperature dependence of exciton and charge carrier dynamics in organic thin films 
    Platt, A. D.; Kendrick, M. J.; Loth, M.; Anthony, J. E.; Ostroverkhova, O. (American Physical Society, 2011-12)
    We report on physical mechanisms behind the temperature-dependent optical absorption, photoluminescence (PL), and photoconductivity in spin-coated films of a functionalized anthradithiophene (ADT) derivative, ADT-triethy ...
  • Terahertz Excitation of a Coherent -Type Three-Level System of Exciton-Polariton Modes in a Quantum-Well Microcavity 
    Tomaino, J. L.; Jameson, A. D.; Lee, Yun-Shik; Khitrova, G.; Gibbs, H. M.; Klettke, A. C.; Kira, M.; Koch, S.W. (American Physical Society, 2012-06-29)
    Interactions of few-cycle terahertz pulses with the induced optical polarization in a quantum-well microcavity reveal that the lower and higher exciton-polariton modes together with the optically forbidden 2p-exciton sta ...
  • Terahertz imaging of inhomogeneous electrodynamics in single-layer graphene embedded in dielectrics 
    Paul, M. J.; Tomaino, J. L.; Kevek, J. W.; DeBorde, T.; Thompson, Z. J.; Minot, E. D.; Lee, Yun-Shik (American Institute of Physics, 2012-08-29)
    We investigate electron transport properties in large-area, single-layer graphene embedded in dielectric media, using free-space terahertz (THz) imaging and time-domain spectroscopy. Sandwiched between a thin polymethyl ...
  • Terahertz pulse shaping via optical rectification in poled lithium niobate 
    Lee, Yun-Shik; Amer, N.; Hurlbut, Walter C. (American Institute of Physics, 2003-01-13)
    We demonstrate a technique for terahertz pulse shaping via optical rectification in the pre-engineered domain structure of poled lithium niobate crystals. The terahertz wave forms coincide with the crystal domain struc ...
  • Terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes 
    Paul, M. J.; Kuhta, N. A.; Tomaino, J. L.; Jameson, A. D.; Maizy, L. P.; Sharf, T.; Rupesinghe, N. L.; Teo, K. B. K.; Inampudi, S.; Podolskiy, V. A.; Minot, E. D.; Lee, Yun-Shik (American Institute of Physics, 2012-09-10)
    We demonstrate time-resolved terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes. The angle-resolved transmission measurements reveal anisotropic characteristics of the terahertz elect ...
  • Terahertz-wave generation in quasi-phase-matched GaAs 
    Vodopyanov, K. L.; Fejer, M. M.; Yu, X.; Harris, J. S.; Lee, Yun-Shik; Hurlbut, Walter C.; Kozlov, V. G.; Bliss, D.; Lynch, C. (American Institute of Physics, 2006-10-04)
    The authors demonstrate an efficient room temperature source of terahertz radiation using femtosecond laser pulses as a pump and GaAs structures with periodically inverted crystalline orientation, such as diffusion-bon ...
  • Transparent p-type conducting CuScO₂₊ₓ films 
    Daun, N.; Sleight, A. W.; Jayaraj, M. K.; Tate, J. (American Institute of Physics, 2000-08-28)
    Transparent films of CuScO₂₊ₓ have been prepared which show p-type electrical conductivity. The temperature dependence of the conductivity indicates semiconducting behavior with an apparent room temperature activation ...
  • Tunable thermal switching via DNA-based nano-devices 
    Chien, Chih-Chun; Velizhanin, Kirill A; Dubi, Yonatan; Zwolak, Michael (IOP Publishing, 2013-02-08)
    DNA has a well-defined structural transition-the denaturation of its double-stranded form into two single strands-that strongly affects its thermal transport properties. We show that, according to a widely implemented mo ...
  • Ultrafast Nonlinear Optical Effects in Semiconductor Quantum Wells Resonantly Driven by Strong Few-Cycle Terahertz Pulses 
    Tomaino, J. L.; Jameson, A. D.; Lee, Yun-Shik; Prineas, J. P.; Steiner, J. T.; Kira, M.; Koch, S. W. (Elsevier, 2010)
    Intraexciton transitions in semiconductor quantum wells are modulated by strong and tunable few-cycle terahertz pulses. Time-resolved terahertz-pump and optical-probe measurements demonstrate that the 1s heavy-hole and ...
  • Uncertainty Relations from Simple Entropic Properties 
    Coles, Patrick J.; Colbeck, Roger; Yu, Li; Zwolak, Michael (American Physical Society, 2012-05-23)
    Uncertainty relations provide constraints on how well the outcomes of incompatible measurements can be predicted, and as well as being fundamental to our understanding of quantum theory, they have practical applications ...
  • Using fundamental measure theory to treat the correlation function of the inhomogeneous hard-sphere fluid 
    Schulte, Jeff B.; Kreitzberg, Patrick A.; Haglund, Chris V.; Roundy, David (2012-12-28)
    We investigate the value of the correlation function of an inhomogeneous hard-sphere fluid at contact. This quantity plays a critical role in statistical associating fluid theory, which is the basis of a number of recen ...

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