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Letter

Nature Physics 4, 24–27 (1 January 2008) | doi:10.1038/nphys786

Spectral weight transfer in the integer quantum Hall effect and its consequences

Chenggang Zhou & Mona Berciu

The energy spectrum of a two-dimensional electron gas placed in a transversal magnetic field B consists of quantized Landau levels. In the absence of disorder, the degeneracy of each Landau level is N=BA/|[phi]|0, where A is the area of the sample and |[phi]|0=h/e is the magnetic flux quantum.