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Hysteresis and first-order phase transition in the two-dimensional electron gas

Piazza, Vincenzo and Pellegrini, Vittorio and Beltram, Fabio and Wegscheider, Werner and Bichler, Max and Jungwirth, Tomàs and McDonald, Allan H. (2000) Hysteresis and first-order phase transition in the two-dimensional electron gas. Physica E Low-dimensional Systems and Nanostructures 6 (1-4), pp. 108-111.

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We report experimental evidence of the first-order phase transitions in the two-dimensional electron gas formed in a gated wide GaAs/AlGaAs quantum well at even-integer quantum-Hall states. At the filling factor values of ν=2,4 and low temperatures, crossing of Landau levels through the application of the gate bias yields a suppression of the quantum-Hall-state excitation gap and hysteretical ...


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Item type:Article
Date:February 2000
Institutions:Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Identification Number:
75.60.−d; 75.30.GwPACS
Keywords:Quantum hall effect; Ferromagnetism; Hysteresis
Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Deposited on:30 Nov 2009 13:20
Last modified:13 Mar 2014 12:09
Item ID:11035
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