Quantum percolation in magnetic fields.
نویسندگان
چکیده
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 φ0=ħc/e. Extended states appear and disappear periodically even at d=2. Disciplines Physics | Quantum Physics This journal article is available at ScholarlyCommons: http://repository.upenn.edu/physics_papers/311 Vm, UME 56, NUMsER9 PHYSICAL REVIEW LETTERS 3 MARcH 1986 Quantum Percolation in Magnetic Fields Yigal Meir and Amnon Aharony School of Physics and Astronomy, Tel A vi v University, Tel A vi v 699?8, Israel
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عنوان ژورنال:
- Physical review letters
دوره 56 9 شماره
صفحات -
تاریخ انتشار 1986