221 citations · 1.3k across the 26 of their papers we have counts for
7 papers · 1 filter
Bipartite magnetic parent phases in the iron-oxypnictide superconductor
Masatoshi Hiraishi, Soshi Iimura, Kenji M. Kojima +19
High-temperature (high-) superconductivity appears as a consequence of the carrier-doping of an undoped parent compound exhibiting antiferromagnetic order; thereby, grou…
Spin-orbit coupling inactivity of Co ion in geometrically frustrated magnet GeCoO
Keisuke Tomiyasu, Ayaka Tominaga, Shigeo Hara +5
We report single-crystal neutron diffraction studies on a spinel antiferromagnet GeCoO, which exhibits magnetic order with a trigonal propagation vector and tetragonal latt…
Spin and charge orders and their hole-doping dependence in single layered cobaltate La2-xCaxCoO4(0.3<x<0.8)
K. Horigane, H. Hiraka, T. Uchida +2
Neutron scattering experiments were performed on single crystals of layered cobalt-oxides La2-xCaxCoO4 (LCCO) to characterize the charge and spin orders in a wide hole-doping range…
Oxygen Phonon Branches in YBa2Cu3O7
L. Pintschovius, D. Reznik, W. Reichardt +6
We report results of inelastic neutron scattering measurements of phonon dispersions in optimally doped YBa2Cu3O6.95 and compare them with model calculations. The focus is on the i…
Evidence for Dynamic Charge Stripes in the Phonons of Optimally Doped YBCO
L. Pintschovius, Y. Endoh, D. Reznik +6
Inelastic neutron scattering investigations on optimally doped YBCO revealed a very pronounced temperature dependence in the Cu-O in-plane bond-stretching vibrations along the (010…
Magnetic frustrations in the face centered cubic antiferromagnet NiS2
M. Matsuura, Y. Endoh, H. Hiraka +5
Neutron scattering experiment on NiS2 single crystal revealed a honeycomb pattern of the intensity distribution in reciprocal lattice space (continuous-line structure along the fcc…
Magnetic Phase Diagram and Metal-Insulator Transition of NiS2-xSex
M. Matsuura, H. Hiraka, K. Yamada +1
Magnetic phase diagram of NiS2-xSex has been reexamined by systematic studies of electrical resistivity, uniform magnetic susceptibility and neutron diffraction using single crysta…