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Butov LV, Levitov LS, Mintsev AV, et al. Formation mechanism and low-temperature instability of exciton rings. Phys Rev Lett. 2004;92(11):117404doi: 10.1103/PhysRevLett.92.117404.
Butov, L. V., Levitov, L. S., Mintsev, A. V., Simons, B. D., Gossard, A. C., & Chemla, D. S. (2004). Formation mechanism and low-temperature instability of exciton rings. Physical review letters, 92(11), 117404. https://doi.org/10.1103/PhysRevLett.92.117404
Butov, L V, et al. "Formation mechanism and low-temperature instability of exciton rings." Physical review letters vol. 92,11 (2004): 117404. doi: https://doi.org/10.1103/PhysRevLett.92.117404
Butov LV, Levitov LS, Mintsev AV, Simons BD, Gossard AC, Chemla DS. Formation mechanism and low-temperature instability of exciton rings. Phys Rev Lett. 2004 Mar 19;92(11):117404. doi: 10.1103/PhysRevLett.92.117404. Epub 2004 Mar 18. PMID: 15089167.
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Phys Rev Lett. 2004 Mar 19;92(11):117404. doi: 10.1103/PhysRevLett.92.117404. Epub 2004 Mar 18.

Formation mechanism and low-temperature instability of exciton rings.

Physical review letters

L V Butov, L S Levitov, A V Mintsev, B D Simons, A C Gossard, D S Chemla

Affiliations

  1. Materials Sciences Division, E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

PMID: 15089167 DOI: 10.1103/PhysRevLett.92.117404

Abstract

The macroscopic rings observed in the photoluminescence patterns of excitons in coupled quantum wells are explained by a mechanism of carrier imbalance, transport, and recombination. The rings originate from the spatial separation of p and n carriers, and occur at the interface of the p and n domains, where excitons are generated. We explore the states of excitons in the ring over a range of temperatures down to 380 mK and report a transition of the ring into a periodic array of aggregates, a new low-temperature ordered exciton state.

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