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Disentangling the surface and bulk electronic structures of LaOFeAs
P. Zhang, J. Ma, T. Qian +7
We performed a comprehensive angle-resolved photoemission spectroscopy study of the electronic band structure of LaOFeAs single crystals. We found that samples cleaved at low tempe…
Coexistence of Clean- and Dirty-limit Superconductivity in LiFeAs
Y. M. Dai, H. Miao, L. Y. Xing +4
The optical properties of LiFeAs with 18 K have been determined in the normal and superconducting states. The superposition of two Drude components yields a good descr…
Spin-Fluctuation-Induced Non-Fermi-Liquid Behavior with suppressed superconductivity in LiFeCoAs
Y. M. Dai, H. Miao, L. Y. Xing +12
A series of LiFeCoAs compounds with different Co concentrations have been studied by transport, optical spectroscopy, angle-resolved photoemission spectroscopy and nu…
Tuning electronic correlations in transition metal pnictides: chemistry beyond the valence count
E. Razzoli, C. E. Matt, M. Kobayashi +14
The effects of electron-electron correlations on the low-energy electronic structure and their relationship with unconventional superconductivity are central aspects in the researc…
Observation of an electron band above the Fermi level in FeTeSe from \emph{in-situ} surface doping
P. Zhang, P. Richard, N. Xu +7
We used \emph{in-situ} potassium (K) evaporation to dope the surface of the iron-based superconductor FeTeSe. The systematic study of the bands near the Fermi lev…
The anomaly Cu doping effects on LiFeAs superconductors
L. Y. Xing, H. Miao, X. C. Wang +5
The Cu substitution effect on the superconductivity of LiFeAs has been studied in comparison with Co/Ni substitution. It is found that the shrinking rate of the lattice parameter c…