Phase transition in a two-dimensional di
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T. Fukuzawa; S.Y. Kim; T.K. Gustafson; E.E. Haller; E. Yamada
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Article
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1998
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Elsevier Science
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English
β 45 KB
A dipole-oriented two-dimensional exciton system in electrically biased GaAs/AlGaAs coupled quantum wells has been studied through photoluminescence. The system has a sample-dependent built-in random potential which traps excitons at low temperature. The average photoluminescence photon energy shows