Lilly, M. P. and Cooper, Kumarasen B. and Eisenstein, J. P. and Pfeiffer, Loren N. and West, Kenneth W. and Wegscheider, Werner and Bichler, Max (2000) Anisotropic state of two-dimensional electron gas in high Landau levels. In: Kramer, Bernd, (ed.) Advances in Solid State Physics. Advances in Solid State Physics, 40. Springer, Berlin, pp. 65-76. ISBN 978-3-540-41576-3.
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When several Landau levels of a high mobility two-dimensional electron system are occupied, transport measurements reveal evidence for intriguing new phenomena at low temperature. Near half filling in the N=2 and higher spin-split Landau levels, dramatic resistance anisotropies are observed. Large magnetoresistance peaks form in one direction in the 2D plane while deep minima form in the in the orthogonal direction. Application of a parallel magnetic field can re-orient this anisotropy. Interestingly, in the N=1 Landau level, parallel fields not only suppress the energy gap of the ν=5/2 fractional quantum Hall state but also render the transport highly anisotropic.
|Item Type:||Book Section|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||02 Mar 2010 13:07|
|Last Modified:||02 Mar 2010 13:07|