205 citations · 679 across the 19 of their papers we have counts for
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Local Lattice Distortion Caused by Short Range Charge Ordering in LiMnO
Katsuaki Kodama, Naoki Igawa, Shin-ichi Shamoto +5
We have performed powder neutron diffraction on Li-enriched sample of LiMnO at 300 K. The crystal structure determined by Rietveld analysis is a cubic spinel with space…
Effects of Randomness on the Field-Induced Phase Transition in the S=1 Bond-Alternating Spin Chain NTENP
S. Matsubara, K. Kodama, M. Takigawa +1
We report novel effects of randomness in the S=1 bond-alternating antiferromagnetic chain compound with a dimer-singlet ground state [Ni(N,N'-bis(3-aminopropyl)propane-1,3-diamine(…
Structural Transitions and Magnetic Structure in NH4CuCl3 via 14N-NMR
Katsuaki Kodama, Masashi Takigawa, Yoshiyuki Shimaoka +1
We report results of 14N-NMR experiments on NH4CuCl3 at the magnetic field of 7 T, where the 1/4-magnetization plateau is observed at low temperatures. The quadrupole splitting par…
Field-Induced Effects of Anisotropic Magnetic Interactions in SrCu2(BO3)2
K. Kodama, S. Miyahara, M. Takigawa +5
We observed a field-induced staggered magnetization in the 2D frustrated dimer-singlet spin system SrCu2(BO3)2 by 11B NMR, from which the magnitudes of the intradimer Dzyaloshinsky…
Direct Evidence for the Localized Single-Triplet Excitations and the Dispersive Multi-Triplets Excitations in SrCu2(BO3)2
H. Kageyama, M. Nishi, N. Aso +6
We performed inelastic neutron scattering on the 2D Shastry-Sutherland system SrCu2(11BO3)2 with an exact dimer ground state. Three energy levels at around 3, 5 and 9 meV were obse…