Anisotropic optical spectrum of untwinned PrBa2Cu3O7: Persistence of the charge-transfer insulating state of the CuO2 plane against hole doping.
Anisotropic optical spectrum of untwinned PrBa2Cu3O7: Persistence of the charge-transfer insulating state of the CuO2 plane against hole doping.
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非孪生 PrBa2Cu3O7 的各向异性光谱：CuO2 平面的电荷转移绝缘状态对空穴掺杂的持续性。
DOI：
10.1103/physrevb.46.5833
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
S. Uchida
中科院分区：
文献类型：
--
作者：
Koshi Takenaka;Yasutaka Imanaka;Kenji Tamasaku;Toshimitsu Ito;S. Uchida
报道了非孪晶PrBa2Cu3O7的偏振光学反射率谱。光谱显示在红外区有很大的各向异性，沿链方向反射率较高。对于α偏振，其光谱与脱氧四方相PrBa2Cu3O7-x的光谱相似，光学能隙约为1.5 eV，表明氧的加入很难在CuO2面上掺杂空穴
Polarized optical reflectivity spectra of untwinned PrBa 2 Cu 3 O 7 are reported. The spectra show a large ab-plane anisotropy in the infrared region with higher reflectivity along the chain direction. For the α polarization, the spectrum is similar to that of deoxygenated tetragonal PrBa 2 Cu 3 O 7-x , with an optical energy gap of about 1.5 eV, indicating that it is difficult to dope holes into the CuO 2 planes by the addition of oxygen