Browsing by Subject "Photoconductivity"

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  • Direct measurement of the g factor of composite fermions 
    Schulze-Wischeler, F.; Mariani, E.; Hohls, Frank; Haug, Rolf J. (College Park, MD : American Physical Society, 2004)
    The activation gap δ of the fractional quantum Hall states was measured as a function of the perpendicular magnetic field. A linear dependence of δ on magnetic field was observed while approaching the spin-polarization ...
  • Giant photogalvanic effect in noncentrosymmetric plasmonic nanoparticles 
    Zhukovsky, Sergei V.; Babicheva, Viktoriia E.; Evlyukhin, Andrey B.; Protsenko, Igor E.; Lavrinenko, Andrei V.; Uskov, Alexander V. (College Park, MD : American Physical Society, 2014)
    Photoelectric properties of noncentrosymmetric, similarly oriented metallic nanoparticles embedded in a homogeneous semiconductor matrix are theoretically studied. Because of the asymmetric shape of the nanoparticle boundary, ...
  • Phonon excitations of composite-fermion Landau levels 
    Schulze-Wischeler, F.; Hohls, Frank; Zeitler, U.; Reuter, D.; Wieck, A.D.; Haug, Rolf J. (College Park, MD : American Physical Society, 2004)
    The phonon excitations of fractional quantum Hall (FQH) states at filling factors ν =1÷3,2÷5, 4÷7, 3÷5, 4÷3, and 5÷3 were investigated. The excitations were found to be based on Landau-level transitions of composite fermions ...
  • Photoconductivity of graphene devices induced by terahertz radiation at various photon energies 
    Salman, M.; Gouider, F.; Friedemann, M.; Schmidt, H.; Ahlers, Franz-J.; Göthlich, M.; Haug, Rolf J.; Nachtwei, G. (College Park, MD : American Institute of Physics, 2013)
    The influence of a magnetic field on Landau levels (LLs) in graphene-based devices is described via the magneto-optical response induced by terahertz (THz) radiation. For single-layer graphene, the resonance energies of ...