Quantum corrections to conductivity: From weak to strong localization
作者： G. M. Minkov , O. E. Rut , A. V. Germanenko , A. A. Sherstobitov , B. N. Zvonkov
DOI: 10.1103/PHYSREVB.65.235322
关键词: Magnetic field 、 Range (particle radiation) 、 Hall effect 、 Conductivity 、 Condensed matter physics 、 Absolute value 、 Fermi gas 、 Heterojunction 、 Quantum 、 Physics
摘要: The results of detailed investigations the conductivity and Hall effect in gated single-quantum-well GaAs/InGaAs/GaAs heterostructures with two-dimensional electron gas are presented. A successive analysis data has shown that is diffusive for k F /=25-2. absolute value quantum corrections /= 2 at low temperature not small; e.g., it about 70% Drude T = 0.46 K. For /=2-0.5 looks like one. magnetic field dependences qualitatively described within framework self-consistent theory Vollhardt Wolfle. interference correction therewith close magnitude to so σ becomes significantly less than e /h. We conclude whole / range due changes corrections.
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