Quantum chaos and conductivity in disordered systems

Authors
Suzuki, A Matsutani, S
Citation
A. Suzuki et S. Matsutani, Quantum chaos and conductivity in disordered systems, J KOR PHYS, 38(5), 2001, pp. 540-544
Citations number
17
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN journal
03744884 → ACNP
Volume
38
Issue
5
Year of publication
2001
Pages
540 - 544
Database
ISI
SICI code
0374-4884(200105)38:5<540:QCACID>2.0.ZU;2-O
Abstract
The hopping conductivity in a disordered system which is composed of small (semi-) metallic granules is presented. Due to the irregular shape of each granule, the level statistics of a free electron in a granule is expressed by a random matrix, and a formula for the temperature-dependent conductivit y (TDC) is obtained for such a disordered system. This TDC shows an apparen t metal-insulator transition and is in good agreement with experimental res ults for disordered carbons.