Physics – Mathematical Physics
Scientific paper
2008-02-11
Asymptotic Analysis 63 (2009) 1-27
Physics
Mathematical Physics
31 pages, minor revision (typos corrected, references updated), accepted in Asymptotic Analysis
Scientific paper
10.3233/ASY-2008-0923
The two-dimensional Schroedinger operator with a uniform magnetic field and a
periodic zero-range potential is considered. For weak magnetic fields we reduce
the spectral problem to the semiclassical analysis of one-dimensional
Harper-like operators. This shows the existence of parts of Cantor structure in
the spectrum for special values of the magnetic flux.
Helffer Bernard
Pankrashkin Konstantin
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