Abstract
We study the dimensional crossover of weak localization in strongly anisotropic systems. This crossover from three-dimensional behavior to an effective lower-dimensional system is triggered by increasing temperature if the phase coherence length gets shorter than the lattice spacing A similar effect occurs in a magnetic field if the magnetic length becomes shorter than where is the ratio of the diffusion coefficients parallel and perpendicular to the planes or chains. γ depends on the direction of the magnetic field, e.g., or for a magnetic field parallel or perpendicular to the planes in a quasi-two-dimensional system. We show that even in the limit of large magnetic field, weak localization is not fully suppressed in a lattice system. Experimental implications are discussed in detail.
- Received 23 May 1997
DOI:https://doi.org/10.1103/PhysRevB.56.10953
©1997 American Physical Society