Magnetoresistance induced by rare strong scatterers in a high-mobility two-dimensional electron gas
作者： L. Bockhorn , I. V. Gornyi , D. Schuh , C. Reichl , W. Wegscheider
DOI: 10.1103/PHYSREVB.90.165434
关键词: Curvature 、 Condensed matter physics 、 Magnetoresistance 、 Zero (complex analysis) 、 Physics 、 Fermi gas 、 Magnetic field 、 Quantum well
摘要: We observe a strong negative magnetoresistance at nonquantizing magnetic fields in high-mobility two-dimensional electron gas. This consists of narrow peak around zero field and huge larger fields. The shows parabolic dependence is attributed to the interplay smooth disorder rare scatterers. identify scatterers as macroscopic defects material determine their density from curvature.
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