arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0904.2248cond-mat.supr-concond-mat.str-el
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掺杂对Bi2201光学性质的影响

Doping dependent optical properties of Bi2201

E. van Heumen, W. Meevasana, A. B. Kuzmenko, H. Eisaki, D. van der Marel

摘要:

对(Pb $_{x}$,Bi $_{2-x}$)(La $_{y}$ Sr $_{2-y}$)CuO $_{6+δ}$(Bi 2201)在宽掺杂和温度范围内的面内光学电导率进行了实验研究。在强耦合形式主义的面内电导率进行了分析。我们解决的光学电导率($σ(ω)$),单粒子自能量,和电子玻色子光谱函数之间的相互关系。我们发现,频率和温度的依赖性,可以很好地描述在这种形式主义。我们提出了一个通用的描述光学,ARPES和隧道光谱。的光谱和单粒子自能的全频率和温度依赖性示出的结果从电子玻色子光谱函数,这表现出强掺杂依赖性和弱温度依赖性。

英文摘要:

An experimental study of the in-plane optical conductivity of (Pb$_{x}$,Bi$_{2-x}$)(La$_{y}$Sr$_{2-y}$)CuO$_{6+δ}$ (Bi2201) is presented for a broad doping and temperature range. The in-plane conductivity is analyzed within a strong coupling formalism. We address the interrelationship between the optical conductivity ($σ(ω)$), the single particle self energy, and the electron-boson spectral function. We find that the frequency and temperature dependence can be well described within this formalism. We present a universal description of optical, ARPES and tunneling spectra. The full frequency and temperature dependence of the optical spectra and single particle self-energy is shown to result from an electron-boson spectral function, which shows a strong doping dependence and weak temperature dependence.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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