標題: Giant Hall effect in nonmagnetic granular metal films
作者: Zhang, XX
Wan, CC
Liu, H
Li, ZQ
Sheng, P
Lin, JJ
物理研究所
Institute of Physics
公開日期: 11-Jun-2001
摘要: Nearly 3 orders of magnitude enhancement in the Hall coefficient is observed in Cu-x -(SiO2)(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.
URI: http://dx.doi.org/10.1103/PhysRevLett.86.5562
http://hdl.handle.net/11536/29573
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.86.5562
期刊: PHYSICAL REVIEW LETTERS
Volume: 86
Issue: 24
起始頁: 5562
結束頁: 5565
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