Auflistung Fakultät für Mathematik und Physik nach Lizenz

Auflistung Fakultät für Mathematik und Physik nach Lizenz

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  • Low-temperature hysteresis in the field effect of bilayer graphene 
    Barthold, P.; Lüdtke, T.; Schmidt, H.; Haug, Rolf J. (Bristol : IOP Publishing Ltd., 2011)
    Hysteresis in the field effect of bilayer graphene is observed at a low temperature. We attribute this effect to charge traps in the substrate. When the sweep rate of the back-gate voltage is increased to higher values, ...
  • Magnetization dynamics in optically excited nanostructured nickel films 
    Mueller, Georg M.; Eilers, Gerrit; Wang, Zhao; Scherff, Malte; Ji, Ran; Nielsch, Kornelius; Ross, Caroline A.; Muenzenberg, Markus (Bristol : IOP Publishing Ltd., 2008)
    In this work, the laser-induced magnetization dynamics of nanostructured nickel films is investigated. The influence of the nanosize is discussed considering the timescale of hundreds of femtoseconds as well as the GHz ...
  • Manipulation of plasmon electron-hole coupling in quasi-free-standing epitaxial graphene layers 
    Langer, Thomas; Pfnür, Herbert; Tegenkamp, Christoph; Forti, Stiven; Emtsev, Konstantin; Starke, Ulrich (Bristol : IOP Publishing Ltd, 2012-10-29)
    We have investigated the plasmon dispersion in quasi-free-standing monolayer graphene (QFMLG) and epitaxial monolayer graphene (MLG) layers by means of angle resolved electron energy loss spectroscopy. We have shown that ...
  • Measurement of finite-frequency current statistics in a single-electron transistor 
    Ubbelohde, Niels; Fricke, Christian; Flindt, Christian; Hohls, Frank; Haug, Rolf J. (Lausanne : Frontiers Research Foundation, 2012-01)
    Electron transport in nanoscale structures is strongly influenced by the Coulomb interaction that gives rise to correlations in the stream of charges and leaves clear fingerprints in the fluctuations of the electrical ...
  • Mechanical Q-factor measurements on a test mass with a structured surface 
    Nawrodt, Ronny; Zimmer, A.; Koettig, T.; Clausnitzer, T.; Bunkowski, A.; Kley, E.B.; Schnabel, Roman; Danzmann, Karsten; Nietzsche, S.; Vodel, W.; Tuennermann, A.; Seidel, P. (Bristol : IOP Publishing Ltd., 2007)
    We present mechanical Q-factors (quality factors) of a crystalline quartz test mass with a nano-structured surface, measured in the temperature regime from 5 to 300 K. The nano-structure was a grating with a period of 2 ...
  • Molecular binding in interacting quantum walks 
    Ahlbrecht, Andre; Alberti, Andrea; Meschede, Dieter; Scholz, Volkher B.; Werner, Albert H.; Werner, Reinhard F. (Bristol : IOP Publishing Ltd., 2012)
    We show that the presence of an interaction in the quantum walk of two atoms leads to the formation of a stable compound, a molecular state. The wave function of the molecule decays exponentially in the relative position ...
  • Negative conductance patterns of quantum dots: experiment and theory 
    Rogge, M.C.; Cavaliere, F.; Sassetti, M.; Haug, Rolf J.; Kramer, B. (Bristol : IOP Publishing Ltd., 2006)
    Experimental results for the sequential transport through a lateral quantum dot in a perpendicular magnetic field are compared with theory. Regular patterns of negative differential conductances are observed in the nonlinear ...
  • A new method for large-eddy simulations of clouds with Lagrangian droplets including the effects of turbulent collision 
    Riechelmann, Theres; Noh, Y.; Raasch, Siegfried (Bristol : IOP Publishing Ltd., 2012)
    In this paper, a new Lagrangian cloud model (LCM) is introduced in which the flow field is simulated by large-eddy simulation, and the droplets are treated as Lagrangian particles responding to the simulated flow field. ...
  • Nonlinear Landau-Zener tunneling in quantum phase space 
    Trimborn, F.; Witthaut, D.; Kegel, V.; Korsch, H. J. (Bristol : IOP Publishing Ltd., 2010)
    We present a detailed analysis of the Landau-Zener problem for an interacting Bose-Einstein condensate in a time-varying double-well trap, especially focusing on the relation between the full many-particle problem and the ...
  • A novel, robust quantum detection scheme 
    Hemmerling, Boerge; Gebert, Florian; Wan, Yong; Schmidt, Piet O. (Bristol : IOP Publishing Ltd., 2012)
    Protocols used in quantum information and precision spectroscopy rely on efficient internal quantum state discrimination. With a single ion in a linear Paul trap, we implement a novel detection method which utilizes ...
  • Numerical studies of different mixed phase-field fracture models for simulating crack propagation in punctured EPDM strips 
    Mang, K.; Wick, T. (Barcelona, Spain : International Centre for Numerical Methods in Engineering (CIMNE), 2021)
    We consider a monolithic phase-field description for fractures in nearly incompressible materials, i.e., carbon black filled ethylene propylene diene monomer rubber (EPDM). A quasi-static phase-field fracture problem is ...
  • Observation of a kilogram-scale oscillator near its quantum ground state 
    Aufmuth, Peter; Danzmann, Karsten; Hage, B.; Kwee, P.; Lueck, H.; Meier, Tobias; Thuering, A.; Willke, Benno; et al. (Bristol : IOP Publishing Ltd., 2009)
    We introduce a novel cooling technique capable of approaching the quantum ground state of a kilogram-scale system-an interferometric gravitational wave detector. The detectors of the Laser Interferometer Gravitational-wave ...
  • On the distillation and purification of phase-diffused squeezed states 
    Hage, B.; Franzen, A.; DiGuglielmo, J.; Marek, P.; Fiurasek, Jaromir; Schnabel, R. (Bristol : IOP Publishing Ltd., 2007)
    Recently it was discovered that non-Gaussian decoherence processes, such as phase-diffusion, can be counteracted by purification and distillation protocols that are solely built on Gaussian operations. Here, we make use ...
  • Phase and alignment noise in grating interferometers 
    Freise, A.; Bunkowski, A.; Schnabel, R. (Bristol : IOP Publishing Ltd., 2007)
    Diffraction gratings have been proposed as core optical elements in future laser interferometric gravitational-wave detectors. In this paper, we derive equations for the coupling between alignment noise and phase noise at ...
  • Phase transition from straight into twisted vortex lines in dipolar Bose-Einstein condensates 
    Klawunn, M.; Santos, Luis (Bristol : IOP Publishing Ltd., 2009)
    The non-local nonlinearity introduced by the dipole-dipole interaction plays a crucial role in the physics of dipolar Bose-Einstein condensates. In particular, it may distort significantly the stability of straight vortex ...
  • Plasmon damping below the Landau regime: the role of defects in epitaxial graphene 
    Langer, Thomas; Baringhaus, Jens; Pfnür, Herbert; Schumacher, H.W.; Tegenkamp, Christoph (Bristol : IOP Publishing Ltd., 2010)
    The sheet plasmon in epitaxially grown graphene layers on SiC(0001) and the influence of surface roughness have been investigated in detail by means of low-energy electron diffraction (LEED) and electron energy loss ...
  • Probing Fano resonances with ultrashort pulses 
    Zhao, Jing; Lein, Manfred (Bristol : IOP Publishing Ltd., 2012)
    In this paper, autoionizing states in the one-dimensional helium atom are investigated by numerical solution of the time-dependent two-electron Schrodinger equation. The atom is irradiated by an extreme ultraviolet (XUV) ...
  • Quantum engineering of squeezed states for quantum communication and metrology 
    Vahlbruch, H.; Chelkowski, S.; Danzmann, Karsten; Schnabel, R. (Bristol : IOP Publishing Ltd., 2007)
    We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency band down to 1 Hz have been ...
  • Quantum stability of Mott-insulator states of ultracold atoms in optical resonators 
    Larson, Jonas; Fernandez-Vidal, Sonia; Morigi, Giovanna; Lewenstein, Maciej (Bristol : IOP Publishing Ltd., 2008)
    We investigate a paradigm example of cavity quantum electrodynamics with many body systems: an ultracold atomic gas inside a pumped optical resonator, confined by the mechanical potential emerging from the cavity-field ...
  • Quantum switches and quantum memories for matter-wave lattice solitons 
    Ahufinger, V.; Mebrahtu, A.; Corbalan, R.; Sanpera, A. (Bristol : IOP Publishing Ltd., 2007)
    We study the possibility of implementing a quantum switch and a quantum memory using matter-wave lattice solitons and making them interact with 'effective' potentials (barrier/well) corresponding to defects of the optical ...

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