Anderson localization in an anisotropic model
In: Physical review. B, Condensed matter, Jg. 48 (1993), Heft 15, S. 10761-10765
Online
academicJournal
- print, 9 ref
Zugriff:
The phase diagram of the Anderson-localization problem in an anisotropic model which has both two-dimensional (2D) and 3D scattering is studied using a diagrammatic method. It is found that the mobility edge follows the relation θ=a exp(-b/Wc2) in the anisotropy limit, where θ is the anisotropy parameter which interpolates a system of two-dimensionally coupled pure 1D chains, each having a different site energy, and a system of 3D isotropic randomness. Wc is the critical randomness, and a and b are two Fermi-energy-dependent constants. This behavior is different from the results of a 1D-to-3D crossover model studied previously. In that model, there exists a nonzero critical anisotropy θc below which all states are localized. Physical reasons are given to explain this difference.
Titel: |
Anderson localization in an anisotropic model
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Autor/in / Beteiligte Person: | QIAN-JIN, CHU ; ZHAO-QING, ZHANG |
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Zeitschrift: | Physical review. B, Condensed matter, Jg. 48 (1993), Heft 15, S. 10761-10765 |
Veröffentlichung: | Woodbury, NY; Woodbury, NY: American Institute of Physics, American Physical Society, 1993 |
Medientyp: | academicJournal |
Umfang: | print, 9 ref |
ISSN: | 0163-1829 (print) |
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