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Activated transport in the separate layers that form the nuT=1 exciton condensate.

Authors :
Wiersma RD
Lok JG
Kraus S
Dietsche W
von Klitzing K
Schuh D
Bichler M
Tranitz HP
Wegscheider W
Source :
Physical review letters [Phys Rev Lett] 2004 Dec 31; Vol. 93 (26 Pt 1), pp. 266805. Date of Electronic Publication: 2004 Dec 21.
Publication Year :
2004

Abstract

We observe the total filling factor nuT=1 quantum Hall state in a bilayer two-dimensional electron system with virtually no tunneling. We find thermally activated transport in the balanced system with a monotonic increase of the activation energy with decreasing d/lB below 1.65. In the imbalanced system we find activated transport in each of the layers separately, yet the activation energies show a striking asymmetry around the balance point, implying a different excitation spectrum for the separate layers forming the condensed state.

Details

Language :
English
ISSN :
0031-9007
Volume :
93
Issue :
26 Pt 1
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
15698006
Full Text :
https://doi.org/10.1103/PhysRevLett.93.266805