Abstract
We report on magnetoconductance measurements of metallic networks of various sizes ranging from 10 to plaquettes, with an anisotropic aspect ratio. Both Altshuler-Aronov-Spivak periodic oscillations and Aharonov-Bohm periodic oscillations are observed for all networks. For large samples, the amplitude of both oscillations results from the incoherent superposition of contributions of phase coherent regions. When the transverse size becomes smaller than the phase coherent length , one enters a new regime which is phase coherent (mesoscopic) along one direction and macroscopic along the other, leading to a new size dependence of the quantum oscillations.
- Received 23 March 2006
DOI:https://doi.org/10.1103/PhysRevLett.98.026807
©2007 American Physical Society