ab-plane optical properties of Tl2Ba2CuO6+ delta.
ab-plane optical properties of Tl2Ba2CuO6+ delta.
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Tl2Ba2CuO6 delta 的 ab 平面光学特性。
DOI：
10.1103/physrevb.51.3312
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Hermann
中科院分区：
文献类型：
--
作者：
Puchkov;Timusk;Doyle;Hermann
我们报告了单层高温 c 超导体 Tl 2 Ba 2 CuO 6+ δ 在正常状态和超导状态下的绝对 ab 平面反射率测量。反射率在 40 至 40000 cm−1 范围内进行测量，光导率通过 Kramers-Kronig 分析计算得出。低频反射率的不寻常形式导致光导率具有强烈的低频特征。在超导状态下，由于超流体部分的形成，光谱权重在频率低于~ 800 cm−1 时受到强烈抑制。伦敦穿透深度的值估计为 2400±200 Å，大于μ子自旋共振 (μSR) 实验的值。
We report on absolute ab-plane reflectivity measurements of the single-layer high-T c superconductor Tl 2 Ba 2 CuO 6+ δ in both the normal and superconducting states. The reflectivity has been measured from 40 to 40000 cm− 1 and the optical conductivity has been calculated from Kramers-Kronig analysis. The unusual form of the low-frequency reflectivity leads to an intense low-frequency feature in the optical conductivity. In the superconducting state, the spectral weight is strongly suppressed at frequencies below∼ 800 cm− 1 due to the formation of a superfluid fraction. The value of the London penetration depth has been estimated to be 2400±200 Å, larger than that from muon-spin-resonance (μSR) experiments.