Dethlefsen, A. F. and Mariani, E. and Tranitz, Hans-Peter and Wegscheider, Werner and Haug, R. J. (2006) Signatures of spin in the ν=1∕3 fractional quantum Hall effect. Physical Review B (PRB) 74 (16), p. 165325.
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The activation gap Δ of the fractional quantum Hall state at constant filling ν=1∕3 is measured in a wide range of perpendicular magnetic field B. Despite the full spin polarization of the incompressible ground state, we observe a sharp crossover between a low-field linear dependence of Δ on B and a Coulomblike square root behavior at large B. From the global gap reduction we get information about the mobility edges in the fractional quantum Hall regime.
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|Date:||24 October 2006|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider|
|Dewey Decimal Classification:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited on:||25 Jan 2010 13:18|
|Last modified:||13 Mar 2014 12:31|