Abstract
A generalized average inverse participation ratio, for the one-electron wave functions of a dilute tight-binding model on a d dimensional hypercubic lattice, is studied at finite magnetic fields. Extended wave functions appear above a quantum threshold bond concentration, pq. This threshold decreases at small magnetic fields, and shows a periodic dependence on the magnetic flux through a basic plaquette, with period 0ce. Extended states appear and disappear periodically even at d=2.
Original language | English |
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Pages (from-to) | 976-979 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 56 |
Issue number | 9 |
DOIs | |
State | Published - 1 Jan 1986 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy