Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Akira Oosawa"'
Autor:
Kazuma Kishi, Yui Takahashi, Nasa Morokawa, Akira Oosawa, Shigeo Hanada, Shoji Kanada, Atsuko Kurosaki, Hisashi Takaya, Hironori Uruga, Kazumasa Ogawa
Publikováno v:
Respiratory investigation. 57(5)
Background To evaluate the benefits of using a CT image case database (DB) with content-based image retrieval system for the diagnosis of typical non-cancerous respiratory diseases. Methods Using this DB, which comprised data on 191 cases covering 69
Bond-randomness effect on the quantum spin system Tl1-xKxCuCl3 probed by muon-spin-relaxation method
Publikováno v:
Physica B: Condensed Matter. 404:590-593
Muon-spin-relaxation ( μ SR ) measurements were carried out on the randomness-introduced quantum spin system Tl 1 - x K x CuCl 3 . Zero-field μ SR measurement results reveal that the rapid increase of the μ SR rate λ with decreasing temperature i
Autor:
Akira Oosawa, S. Stark, O. Heyer, Hidekazu Tanaka, Thomas Lorenz, N. Hollmann, Alexander N. Vasiliev
Publikováno v:
Journal of Magnetism and Magnetic Materials. 316:291-297
We present thermal expansion α , magnetostriction and specific heat C measurements of TlCuCl 3 , which shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground state as a function of magnetic field around H C 0 ≃ 4.8 T . Usi
Autor:
Toshiro Sakakibara, Kazuhisa Kakurai, Hidekazu Tanaka, Toshio Ono, Kenji Goto, Fumiko Yamada, Yoshiya Uwatoko, Akira Oosawa
Publikováno v:
Journal of Magnetism and Magnetic Materials. 310:1343-1348
TlCuCl 3 is composed of spin dimers and has a gapped singlet ground state. This system undergoes antiferromagnetic orderings under both external magnetic field and hydrostatic pressure, which are described as Bose–Einstein condensation and softenin
Autor:
Takao Suzuki, Masaki Fujita, J. Tonishi, M. Ueda, Tadashi Adachi, Kazuyoshi Yamada, Akira Oosawa, Yoji Koike, Takayuki Goto
Publikováno v:
Journal of Physics: Conference Series. 51:275-278
The buckling of CuO2 plane in single crystals of La2−xSrxCuO4 (LSCO) [x = 0.08] and La2−x−yBaySrxCuO4 (LBSCO) [x = 0.06 , y = 0.065] was directly observed by high-field Cu-NMR spectra. The split pattern in the NMR spectra of LSCO [x = 0.08] sho
Autor:
Shigeharu Hosoya, H Inoue, Kenji Watanabe, N. Kobayashi, T. Saito, S Tani, Takayuki Goto, T. Sasaki, Akira Oosawa, Hidekazu Tanaka, Satoshi Awaji, Masashi Fujisawa
Publikováno v:
Journal of Physics: Conference Series. 51:103-106
A quantum spin magnet NH4CuCl3 is a three dimensional dimer system, which shows a two-stepped magnetization plateaus at M = 1/4 and 3/4. In order to investigate the spatial configuration of field-induced triplons under high-field, Cu-NMR study has be
Autor:
Kazuo Watanabe, T. Saito, Takao Suzuki, N. Kobayashi, Akira Oosawa, Takahiko Sasaki, T Goto, Hirotaka Manaka, Satoshi Awaji
Publikováno v:
Journal of Physics: Conference Series. 51:187-190
Magnetic torque τ and magnetostriction ΔL/L measurements were carried out in the spin gap system (CH3)2CHNH3CuCl3. The magnetic torque shows a cusp-like anomaly at the magnetic field Ha1with increasing the magnetic field, and the magnetostriction s
Publikováno v:
Progress of Theoretical Physics Supplement. 159:195-199
We report Raman scattering experiments on the coupled spin dimer system Tl 1-x K x CuCl 3 (x = 0,0.1 and 1). Qualitatively different magnetic excitations are observed as a function of substitution. TlCuCl 3 shows a broadened two-magnon continuum whil
Autor:
Michael Meissner, Kazuhisa Kakurai, J. Ollivier, Jens Klenke, Hidekazu Tanaka, A. D. Tennant, Radu Coldea, Akira Oosawa, Y. Koike, Hiroyuki Mitamura, P. Smeibidle, Toshio Ono, O. Kolomiyets, Tsuneaki Goto, Kenji Nakajima, Fumihiro Ishikawa
Publikováno v:
Progress of Theoretical Physics Supplement. 159:217-221
The field induced magnetic phase transitions of Cs 2 CuBr 4 were investigated by means of magnetization process and neutron scattering experiments. Cs 2 CuBr 4 should be characterized as S = 1/2 two-dimensional triangular antiferromagnet. Below the o
Publikováno v:
Progress of Theoretical Physics Supplement. 159:189-194
The effect of exchange randomness on the ground state and the field-induced magnetic ordering was investigated through specific heat and magnetization measurements in Tl 1-x K x CuCl 3 with x < 0.22. The isostructural parent compounds TlCuCl 3 and KC