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Anisotropic state of two-dimensional electron gas in high Landau levels

Lilly, M. P. ; Cooper, Kumarasen B. ; Eisenstein, J. P. ; Pfeiffer, Loren N. ; West, Kenneth W. ; Wegscheider, Werner ; Bichler, Max


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 ...


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