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Your search keyword '"Shigeki Ohsugi"' showing total 2 results
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2 results on '"Shigeki Ohsugi"'

1. Gapless superconductivity in overdoped Hg System; Cu-NQR study

Author

Shigeki Ohsugi, Kazuo Fueki, Tetsuo Tsuchiya, and Tadashi Koyama

Subjects
Physics, Superconductivity, Gapless playback, Zero field, Condensed matter physics, Transition temperature, Magnet, Spin–lattice relaxation, General Materials Science, Condensed Matter Physics, Nuclear quadrupole resonance, Atomic and Molecular Physics, and Optics
Abstract

The nuclear quadrupole resonance (NQR) investigation of Cu in the overdoped compounds HgBa2CuOy (Hg1201) with y=4. 06 (Tc=92K) and 4.11 (64K) and HgBa2CaCu2Oy (Hg1212) with y=6.13 (Tc=125K) and 6.21 (117K) was carried out in zero field. From the temperature (T) dependence of the nuclear spin-lattice relaxation time, T1, of63Cu, we discuss a cause of the Tc suppression with decreasing the number of CuO2 layers.

Published
1996

2. La-NQR study of La2−xMxCuO4 (M=Sr and Ba) around x∼1/8

Author

Shigeki Ohsugi

Subjects
Physics, Zero field, Condensed matter physics, Perpendicular, General Physics and Astronomy, Nuclear quadrupole resonance, Hyperfine structure, Value (mathematics)
Abstract

The two-dimensional magnetic ordering in La2−xBaxCuO4 (LBCO) around x∼1/8 was confirmed by means of the nuclear quadrupole resonance (NQR) of139La at 1.4K in zero field. The hyperfine (internal) fields perpendicular to the c-axis, H⊥'s, for x=0.125 in LBCO and x=0.115 in La2−xSrxCuO4 (LSCO) at 1.4K have almost the same value of 0.42 k0e, which is nearly half value of H∼1k0e for La2CuO4.

Published
1996

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