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Complete d-Band Dispersion and the Mobile Fermion Scale in NaxCoO2
D. Qian, L. Wray, D. Hsieh +6
We utilize fine-tuned polarization selection coupled with excitation-energy variation of photoelectron signal to image the \textit{complete d}-band dispersion relation in sodium co…
Anisotropic Magnetoresistance in Charge-Ordering :Strong Spin-Charge Coupling and Spin Ordering
C. H. Wang, X. H. Chen, G. Wu +5
Angular-dependent in-plane magnetoresistance (AMR) for single crystal with charge ordering is studied systematically. The anisotropic magnetoresistanc…
Optical study of MgTiO: Evidence for an orbital-Peierls state
J. Zhou, G. Li, J. L. Luo +6
Dimension reduction due to the orbital ordering has recently been proposed to explain the exotic charge, magnetic and structural transitions in some three-dimensional (3D) transiti…
Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors (NaxCoO2)
D. Qian, D. Hsieh, L. Wray +7
We report a state-of-the-art photoemission (ARPES) study of high quality single crystals of the NaxCoO2 series focusing on the fine details of the low-energy states. The Fermi velo…
Quasiparticle coherence and the nature of the metal-insulator phase transition in NaCoO
D. Qian, L. Wray, D. Hsieh +7
Layered cobaltates embody novel realizations of correlated quantum matter on a spin-1/2 triangular lattice. We report a high-resolution systematic photoemission study of the insula…
Evidence of s-wave pairing symmetry in layered superconductor LiNbO from the specific heat measurement
G. T. liu, J. L. Luo, Z. Li +4
A high quality superconducting LiNbO polycrystalline sample was synthesized by deintercalation of Li ions from LiNbO. The field dependent resistivity and…