Magnetotransport in inhomogeneous magnetic fields
arXiv:cond-mat/0411248 · doi:10.1103/PhysRevB.67.165309
Abstract
Quantum transport in inhomogeneous magnetic fields is investigated numerically in two-dimensional systems using the equation of motion method. In particular, the diffusion of electrons in random magnetic fields in the presence of additional weak uniform magnetic fields is examined. It is found that the conductivity is strongly suppressed by the additional uniform magnetic field and saturates when the uniform magnetic field becomes on the order of the fluctuation of the random magnetic field. The value of the conductivity at this saturation is found to be insensitive to the magnitude of the fluctuation of the random field. The effect of random potential on the magnetoconductance is also discussed.
5 pages, 5 figures
References in corpus (9)
- Localization of Charged Quantum Particles in a Static Random Magnetic Field
- Anderson localization due to random magnetic field in two dimensions
- Strong magnetoresistance induced by long-range disorder
- Semiclassical theory of transport in a random magnetic field
- Diffusion of electrons in random magnetic fields,
- The random magnetic flux problem in a quantum wire
- Composite fermions in a long-range random magnetic field: Quantum Hall effect versus Shubnikov-de Haas oscillations
- Diffusion of electrons in two-dimensional disordered symplectic systems
- Localization length in a random magnetic field