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Observation of intertwined Fermi surface topology, orbital parity symmetries and electronic interactions in iron arsenide superconductors
L. A. Wray, D. Hsieh, Y. Xia +6
We present a polarization and topology resolved study of the low energy band structure in optimally doped superconducting Ba0.6K0.4Fe2As2 using angle resolved photoemission spectro…
75As NMR study of single crystals of the heavily overdoped pnictide superconductors Ba{1-x}KxFe2As2 (x = 0.7 and 1)
S. W. Zhang, L. Ma, Y. D. Hou +6
We performed As NMR studies on two overdoped high-quality BaKFeAs (x=0.7 and 1.0) single crystals. In the normal states, we found a dramatic increase o…
Lattice distortion and magnetic quantum phase transition in CeFeAs(1-x)P(x)O
Clarina de la Cruz, W. Z. Hu, Shiliang Li +8
We use neutron scattering to show that replacing the larger arsenic with smaller phosphorus in CeFeAs(1-x)P(x)O simultaneously suppresses the AF order and orthorhombic distortion n…
Optical study on the spin-density wave properties in single crystalline NaFeAs
W. Z. Hu, G. Li, P. Zheng +3
We report an optical investigation on the in-plane charge dynamics for NaFeAs single crystal. A clear optical evidence for the spin-density wave (SDW) gap is observed. As t…
Electronic Evidence of Unusual Magnetic Ordering in a Parent Compound of FeAs-Based Superconductors
Guodong Liu, Haiyun Liu, Lin Zhao +12
High resolution angle-resolved photoemission measurements have been carried out on BaFe2As2, a parent compound of the FeAs-based superconductors. In the magnetic ordering state, th…