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arXiv 0902.2872cond-mat.supr-concond-mat.str-el
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角分辨光电子能谱研究CeCoIn5的电子结构I:与LDA的比较

The electronic structure of CeCoIn5 from angle-resolved photoemission spectroscopy I: Comparison to LDA

A. Koitzsch, I. Opahle, S. Elgazzar, S. V. Borisenko, J. Geck, V. B. Zabolotnyy, D. Inosov, H. Shiozawa, M. Richter, M. Knupfer, J. Fink, B. Buechner, E. D. Bau… 展开作者

A. Koitzsch, I. Opahle, S. Elgazzar, S. V. Borisenko, J. Geck, V. B. Zabolotnyy, D. Inosov, H. Shiozawa, M. Richter, M. Knupfer, J. Fink, B. Buechner, E. D. Bauer, J. L. Sarrao, R. Follath

摘要:

利用角分辨光电子能谱和能带结构计算研究了重费米子超导体CeCoIn 5的低能电子结构。在hn = 100 eV和T = 25 K下,测量了费米面和沿高对称方向的能量分布图。该化合物具有以布里渊区的M-A线为中心的准二维费米面片。能带结构的计算已经进行了局域密度近似内的4f电子已被视为本地化或巡回。我们讨论的比较实验数据和4f电子在给定温度下的性质的影响。

英文摘要:

We have investigated the low-energy electronic structure of the heavy fermion superconductor CeCoIn5 by angle-resolved photoemission and band structure calculations. We measured the Fermi surface and energy distribution maps along the high-symmetry directions at hn = 100 eV and T = 25 K. The compound has quasi two-dimensional Fermi surface sheets centered at the M-A line of the Brillouin zone. The band structure calculations have been carried out within the local density approximation where the 4f electrons have been treated either localized or itinerant. We discuss the comparison to the experimental data and the implications for the nature of the 4f electrons at the given temperature.

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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