Publications (71)
Evidence for Strong-coupling S-wave Superconductivity in MgB2 :11B NMR Study
H. Kotegawa, K. Ishida, Y. Kitaoka +2
We have investigated a gap structure in a newly-discovered superconductor, MgB2 through the measurement of 11B nuclear spin-lattice relaxation rate, ^{11}(1/T_1). ^{11}(1/T_1) is p…
An experimental measurement of the staggered magnetization curve for a Haldane spin chain
A. Zheludev, E. Ressouche, S. Maslov +3
Long-range magnetic ordering in R_2 Ba Ni O_5 (R=magnetic rare earth) quasi-1-dimensional mixed-spin antiferromagnets is described by a simple mean-field model that is based on the…
Momentum-resolved charge excitations in high-Tc cuprates studied by resonant inelastic x-ray scattering
K. Ishii, M. Hoesch, T. Inami +14
We report a Cu K-edge resonant inelastic x-ray scattering (RIXS) study of high-Tc cuprates. Momentum-resolved charge excitations in the CuO2 plane are examined from parent Mott ins…
Submillimeter Wave ESR Study of Spin Gap Excitations in CuGeO3
H. Nojiri, H. Ohta, S. Okubo +3
Transitions between the ground singlet state to the excited triplet state has been observed in CuGeO3 by means of submillimeter wave electron spin resonance. The strong absorption…
The role of single-ion excitations in the mixed-spin quasi-1-dimensional quantum antiferromagnet Nd_2BaNiO_5
A. Zheludev, S. Maslov, T. Yokoo +4
Inelastic neutron scattering experiments on Nd2BaNiO5 single-crystals and powder samples are used to study the dynamic coupling of 1-dimensional Haldane-gap excitations in the S=1…
Roles of two successive phase transitions in new spin-Peierls system TiOBr
T. Sasaki, M. Mizumaki, T. Nagai +5
In this sturdy, we determine the roles of two successive phase transitions in the new spin-Peierls system TiOBr by electron and synchrotron X-ray diffraction analyses. Results show…