Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field
arXiv:cond-mat/0311151 · doi:10.1103/PhysRevLett.92.246801
Abstract
Magneto-drag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At ν=3/2 a clear T^{4/3} dependence is observed, which signifies the metallic nature of the N=0 Landau level. In contrast, drag in higher Landau levels reveals an additional contribution, which anomalously grows with decreasing T before turning to zero following a thermal activation law. The anomalous drag is discussed in terms of electron-hole asymmetry arising from disorder and localization, and the crossover to normal drag at high fields as due to screening of disorder.
arXiv comment5 pages, 4 figures
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Cited by in corpus (11)
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- Hysteresis in the quantum Hall regimes in electron double quantum well structures
- Magnetodrag in hydrodynamic regime: effects of magnetoplasmon resonance and Hall viscosity
- Engineering drag currents in Coulomb coupled quantum dots
- Semiclassical theory of electron drag in strong magnetic fields
- Hall Coulomb drag induced by electron-electron skew scattering
- The physical picture behind the oscillating sign of drag in high Landau levels