CONDENSATION OF INDIRECT EXCITONS IN COUPLED ALAS/GAAS QUANTUM-WELLS
CONDENSATION OF INDIRECT EXCITONS IN COUPLED ALAS/GAAS QUANTUM-WELLS
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DOI：
10.1103/physrevlett.73.304
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发表时间：
1994-07-11
影响因子：
8.6
通讯作者：
WEIMANN, G
中科院分区：
文献类型：
--
作者：
BUTOV, LV;ZRENNER, A;WEIMANN, G
在T ≤ 350 mK，磁场H ≤ 14 T的条件下，研究了AlAs/GaAs耦合量子阱中激子的光致发光.在电子和空穴在真实的和k空间中分离的间接制度中，发现磁场导致（i）归因于激子输运中的异常的光致发光强度和衰减时间两者的强烈变化和（ii）光致发光强度中的巨大宽带噪声的出现，这是激子凝聚的证据。
The photoluminescence of excitons confined in an electric field tunable coupled AlAs/GaAs quantum well has been investigated at T greater-than-or-equal-to 350 mK and magnetic fields H less-than-or-equal-to 14 T. In the indirect regime where electrons and holes are separated both in real and in k space, the magnetic field was found to result in (i) a strong change of both the photoluminescence intensity and decay time which is attributed to anomalies in the exciton transport and (ii) an appearance of a huge broad band noise in the photoluminescence intensity which is evidence for exciton condensation.