title: Giant Hall effect in nonmagnetic granular metal films.
abstract: Nearly 3 orders of magnitude enhancement in the Hall coefficient is observed in Cu(x)-(SiO(2))(1--x) granular films. This large enhancement of the Hall coefficient not only is significantly larger than the prediction of the classical percolation theory, but also occurs at a metal concentration identified to be the quantum percolation threshold. Measurements of the electron dephasing length and magnetoresistance, plus the TEM characterization of microstructures, yield a physical picture consistent with the mechanism of the local quantum interference effect.
authors: Department of Physics and Institute of Nano Science & Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China. phxxz@ust.hk
authors: X X
authors: XX
authors: Zhang
authors: C
authors: C
authors: Wan
authors: H
authors: H
authors: Liu
authors: Z Q
authors: ZQ
authors: Li
authors: P
authors: P
authors: Sheng
authors: J J
authors: JJ
authors: Lin