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Charge-orbital-lattice coupling effects in the dd-excitation profile of one dimensional cuprates
J. J. Lee, B. Moritz, W. S. Lee +12
We identify dd-excitations in the quasi-one dimensional compound CaYCuO using resonant inelastic x-ray scattering. By tuning across the Cu L-edge, we observe…
Strongly three-dimensional electronic structure and Fermi Surfaces of SrFe(AsP): Comparison with BaFe(AsP)
H. Suzuki, T. Kobayashi, S. Miyasaka +11
The isovalent-substituted iron-pnictide superconductor SrFe(AsP) (=0.35) has a slightly higher optimum critical temperature than the similar system BaF…
Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3
J. J. Lee, F. T. Schmitt, R. G. Moore +11
Single unit cell films of iron selenide (1UC FeSe) grown on SrTiO3 (STO) substrates have recently shown superconducting energy gaps opening at temperatures close to the boiling poi…
Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
Z. K. Liu, B. Zhou, Z. J. Wang +9
Three-dimensional (3D) topological Dirac semimetals (TDSs) represent a novel state of quantum matter that can be viewed as '3D graphene'. In contrast to two-dimensional (2D) Dirac…
Absence of Superconductivity in the "hole-doped" Fe pnictide Ba(FeMn)As: Photoemission and X-ray Absorption Spectroscopy Studies
H. Suzuki, T. Yoshida, S. Ideta +12
We have studied the electronic structure of Ba(FeMn)As (=0.08), which fails to become a superconductor in spite of the formal hole doping like Ba$_{1-x…
Real-time manifestation of strongly coupled spin and charge order parameters in stripe-ordered nickelates via time-resolved resonant x-ray diffraction
Y. D. Chuang, W. S. Lee, Y. F. Kung +27
We investigate the order parameter dynamics of the stripe-ordered nickelate, LaSrNiO, using time-resolved resonant X-ray diffraction. In spite of distinct spi…
The Role of Lattice Coupling in Establishing Electronic and Magnetic Properties in Quasi-One-Dimensional Cuprates
W. S. Lee, S. Johnston, B. Moritz +11
High resolution resonant inelastic x-ray scattering has been performed to reveal the role of lattice-coupling in a family of quasi-1D insulating cuprates, CaYCu$_…