Magnetic-field-induced directional localization in a 2D rectangular lattice

Authors
Barelli, A Bellissard, J Claro, F
Citation
A. Barelli et al., Magnetic-field-induced directional localization in a 2D rectangular lattice, PHYS REV L, 83(24), 1999, pp. 5082-5085
Citations number
29
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
24
Year of publication
1999
Pages
5082 - 5085
Database
ISI
SICI code
0031-9007(199912)83:24<5082:MDLIA2>2.0.ZU;2-E
Abstract
We study the effect of a perpendicular uniform magnetic field on the dissip ative conductivity of a rectangular lattice with anisotropic hopping, t(x) not equal t(y). We show that the magnetic field may enhance dramatically th e directional anisotropy in the conductivity. The effect is a measurable ph ysical realization of Aubry's duality in Harper systems.