頁籤選單縮合
題 名 | Evidence of Bose-Einstein Condensation of Excitons in Semimetallic AlxGa1-xSb/InAs Quantum Wells |
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作 者 | Wang,W. C.; Fan,J. C.; Chen,Y. F.; | 書刊名 | Chinese Journal of Physics |
卷 期 | 37:3 1999.06[民88.06] |
頁 次 | 頁233-239 |
分類號 | 333.32 |
關鍵詞 | |
語 文 | 英文(English) |
英文摘要 | We have directly observed the Bose-Einstein Condensation (BEC) in the transport properties of excitons moving on a heterointerface of type II AlxCa1-xSb/InAs quantum wells. The unavoidable alloy potential fluctuations lead to localized states on the interfaces which are critically important for the observation of the BEC in exactly two dimensions. By changing the alloy composition and the quantum well width, the depth of the potential fluctuations can be varied, and the measured BEC behavior is consistent with the theoretical predication. Our results constitute a first confirmation of the existence of BEC for a non9interacting system in two dimensions. |
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