Browsing by Subject "Magnetoresistance"

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  • Influence of oval defects on transport properties in high-mobility two-dimensional electron gases 
    Bockhorn, L.; Velieva, A.; Hakim, S.; Wagner, Timo; Rugeramigabo, Eddy P.; Schuh, D.; Reichl, C.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2016)
    Rare macroscopic growth defects next to a two-dimensional electron gas influence transport properties and cause a negative magnetoresistance. On the basis of this, we show that the number of oval defects seen on the material ...
  • Interaction-induced huge magnetoresistance in a high mobility two-dimensional electron gas 
    Bockhorn, L.; Gornyi, I.V.; Schuh, D.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2013)
    A strong negative magnetoresistance is observed in a high-mobility two-dimensional electron gas in a GaAs/Al0.3Ga0.7As quantum well. We discuss that the negative magnetoresistance consists of a small peak induced by a ...
  • Linear magnetoresistance in compensated graphene bilayer 
    Vasileva, G.Y.; Smirnov, D.; Ivanov, Y.L.; Vasilyev, Y.B.; Alekseev, P.S.; Dmitriev, A.P.; Gornyi, I.V.; Kachorovskii, V.Y.; Titov, M.; Narozhny, B.N.; Haug, Rolf J. (College Park, MD : American Physical Society, 2016)
    We report a nonsaturating linear magnetoresistance in charge-compensated bilayer graphene in a temperature range from 1.5 to 150 K. The observed linear magnetoresistance disappears away from charge neutrality, ruling out ...
  • Magnetoresistance anisotropy in Si/SiGe in tilted magnetic fields: Experimental evidence for a stripe-phase formation 
    Zeitler, U.; Schumacher, Hans W.; Jansen, A.G.M.; Haug, Rolf J. (College Park, MD : American Physical Society, 2001)
    The anisotropies induced by an in-plane field in the magnetotransport properties of coinciding Landau levels in the two dimensional electron system of a silicon/silicon germanium (Si/SiGe) heterostructure were investigated. ...
  • Magnetoresistance in a high-mobility two-dimensional electron gas 
    Bockhorn, L.; Barthold, P.; Schuh, D.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Physical Society, 2011)
    In a high-mobility two-dimensional electron gas (2DEG) in a GaAs/Al 0.3Ga0.7As quantum well we observe a strong magnetoresistance. In lowering the electron density, the magnetoresistance gets more pronounced and reaches ...
  • Magnetoresistance induced by rare strong scatterers in a high-mobility two-dimensional electron gas 
    Bockhorn, L.; Gornyi, I.V.; Schuh, D.; Reichl, C.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Physical Society, 2014)
    We observe a strong negative magnetoresistance at nonquantizing magnetic fields in a high-mobility two-dimensional electron gas. This strong negative magnetoresistance consists of a narrow peak around zero magnetic field ...