Generation of ultracold paraexcitons in cuprous oxide: A path toward a stable Bose-Einstein condensate
Generation of ultracold paraexcitons in cuprous oxide: A path toward a stable Bose-Einstein condensate
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氧化亚铜中超冷副激子的生成：通往稳定玻色-爱因斯坦凝聚体的道路
DOI：
10.1103/physrevb.88.041201
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发表时间：
2013
影响因子：
3.7
通讯作者：
M. Kuwata
中科院分区：
文献类型：
--
作者：
K. Yoshioka;Y. Morita;Kenta Fukuoka;M. Kuwata
报道了CuO中捕获的副激子气体冷却到100mK，接近晶格温度。结果表明，外加应力激活横向声散射机制是产生超冷激子的原因。这种低温对于在强非弹性环境中获得稳定的、纯的三维激子玻色-爱因斯坦凝聚是不可或缺的。
Cooling of a gas of trapped paraexcitons in CuO to 100 mK, close to the lattice temperature, is reported. We show that the activation of a transverse acoustic scattering mechanism by the applied stress is responsible for the production of ultracold excitons. This low temperature is indispensable to achieving a stable and pure Bose-Einstein condensate of three-dimensional excitons in a strongly inelastic environment.