Formation of a high T(c) electron-hole liquid in diamond.
Formation of a high T(c) electron-hole liquid in diamond.
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金刚石中高 T(c) 电子空穴液体的形成。
DOI：
10.1103/physrevlett.88.057404
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发表时间：
2002
影响因子：
8.6
通讯作者：
M. Kuwata
中科院分区：
文献类型：
--
作者：
R. Shimano;M. Nagai;Kenji Horiuch;M. Kuwata
本文报道了在强飞秒光激发下，用时间分辨发光测量方法观察到金刚石中的电子-空穴液体。EHL的发光带被观察到低于电子-氢等离子体带，显示出几十皮秒的有限上升时间。上升时间，这对应于形核和增长的e-h液滴，直线下降接近弹流临界温度。时间分辨谱形分析表明，该弹流具有1 × 10 ~（20）cm ~（-3）的载流子密度和165 K的临界温度。
We report on the observation of electron-hole ( e-h) liquid (EHL) in diamond by time-resolved luminescence measurements under an intense femtosecond photoexcitation above the band gap. The EHL luminescence band is observed below the e-h plasma band, showing a finite rise time of several tens of picoseconds. The rise time, which corresponds to the nucleation and the growth of the e-h droplets, plummets on approaching the EHL critical temperature. Time-resolved spectral shape analysis reveals a very high carrier density of 1x10(20) cm(-3) and very high critical temperature of T(c) = 165 K of EHL.