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- Title
COUNTERFLOW MEASUREMENTS IN GaAs HOLE BILAYERS: POSSIBLE EVIDENCE FOR EXCITONIC CONDENSATION.
- Authors
Tutuc, Emanuel; Shayegan, Mansour
- Abstract
We study interacting GaAs bilayer hole systems, with very small interlayer tunneling, in a counterflow geometry where equal currents are passed in opposite directions in the two, independently contacted layers. In the quantum Hall state at total bilayer filling v = 1 both the longitudinal and Hall counterflow resistances tend to vanish in the limit of zero temperature. This observation demonstrates the pairing of oppositely charged carriers in opposite layers (excitons), and implies that the ground state of the system is an excitonic condensate.
- Subjects
EXCITON theory; ELECTRON transport; ELECTRONS; QUANTUM Hall effect; QUANTUM tunneling; PHYSICS
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2004, Vol 18, Issue 27-29, p3685
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979204027281