Reflectivity and conductivity of YBa2Cu3O7.
Reflectivity and conductivity of YBa2Cu3O7.
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YBa2Cu3O7 的反射率和电导率。
DOI：
10.1103/physrevb.39.6571
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Feild
中科院分区：
文献类型：
--
作者：
Collins;Schlesinger;Holtzberg;Chaudhari;Feild
在Tc为92 K时，由YBa 2Cu 3 O 7晶体和薄膜的反射率随温度变化的光谱，得到了YBa 2Cu 3 O 7的a-b面红外电导率。正常态的特征是一个自由载流子带，其低频质量增强，散射率随频率变化，这表明耦合到特征频率尺度为ω c <$700 cm− 1的激发光谱，耦合强度为λ <$2至3。
We obtain the a-b plane infrared conductivity of YBa 2 Cu 3 O 7 from temperature-dependent reflectivity spectra of crystals and films with T c≃ 92 K. The normal state is characterized by a free-carrier band with an enhanced low-frequency mass and a frequency-dependent scattering rate, which indicate coupling to an excitation spectrum with a characteristic frequency scale of ω c≲ 700 cm− 1 and coupling strength of λ≃ 2 to 3.