Auflistung nach Schlagwort "Quantum interference"

Sortiert nach: Sortierung: Ergebnisse:

  • Aharonov-Bohm effect in an electron-hole graphene ring system 
    Smirnov, D.; Schmidt, H.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2012)
    Aharonov-Bohm oscillations are observed in a graphene quantum ring with a topgate covering one arm of the ring. As graphene is a gapless semiconductor, this geometry allows to study not only the quantum interference of ...
  • Observation of the local structure of landau bands in a disordered conductor 
    Schmidt, T.; Haug, Rolf J.; Fal'ko, V.I.; v. Klitzing, K.; Förster, A.; Lüth, H. (College Park, MD : American Physical Society, 1997)
    The local density of states of heavily doped GaAs is explored at high magnetic fields, where only a single or few Landau bands are occupied. Our experiment is based on resonant tunneling through impurity states and images ...
  • Quantum interference in an electron-hole graphene ring system 
    Smirnov, D.; Schmidt, H.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2013)
    Quantum interference is observed in a graphene ring system via the Aharonov Bohm effect. As graphene is a gapless semiconductor, this geometry allows to study the unique situation of quantum interference between electrons ...
  • Spontaneous breaking of spatial and spin symmetry in spinor condensates 
    Scherer, Manuel; Lücke, Bernd; Gebreyesus, Garu; Topic, Oliver; Deuretzbacher, Frank; Ertmer, Wolfgang; Santos, Luis; Arlt, Jan J.; Klempt, Carsten (College Park, MD : American Physical Society, 2010)
    Parametric amplification of quantum fluctuations constitutes a fundamental mechanism for spontaneous symmetry breaking. In our experiments, a spinor condensate acts as a parametric amplifier of spin modes, resulting in a ...
  • Strongly temperature dependent resistance of meander-patterned graphene 
    Vasileva, G.Y.; Smirnov, D.; Vasilyev, Y.B.; Nestoklon, M.O.; Averkiev, N.S.; Novikov, S.; Kaya, I.I.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2017)
    We have studied the electronic properties of epitaxial graphene devices patterned in a meander shape with the length up to a few centimeters and the width of few tens of microns. These samples show a pronounced dependence ...