New resistance maxima of the 2DEG at fractional filling factors

DOI to cite this document:: 10.5283/epub.10887

Kronmüller, S. ; Dietsche, W. ; Klitzing, Klaus von ; Wegscheider, Werner ; Bichler, Max

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Date of publication of this fulltext: 09 Nov 2009 13:24

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Abstract

Magneto-resistance measurements in narrow single quantum wells show very sharp (width ≈0.2 T) maxima at fractional filling factors between 1 and Image . The peak values of the new maxima exceed the resistance values in the surrounding magnetic field region by a factor of up to 3. The formation of the maxima is hysteretic and takes place on a long time scale. This points towards a close relation ...