Kronmüller, S. and Dietsche, W. and Klitzing, Klaus von and Wegscheider, Werner and Bichler, Max (1998) New resistance maxima of the 2DEG at fractional filling factors. Physica B Condensed Matter 256-25, pp. 82-85.
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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 with the nuclear spins. Those new maxima will be discussed in the framework of domains having two different spin ground states.
|Date:||2 December 1998|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||Fractional quantum Hall effect; Spin transition; Nuclear spins|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||09 Nov 2009 13:24|
|Last Modified:||20 Jul 2011 22:07|