List of main Publications

(1) papers about spin-triplet superconducting Sr₂RuO₄ and related Ruthenates

1."Spin-triplet superconductivity in Sr₂RuO₄ identified by ¹⁷O Knight shift,"

K. Ishida, H.Mukuda, Y.Kitaoka, K.Asayama, Z.Q.Mao, Y.Mori and Y.Maeno, Nature 396, 658 (1998).

2.“Anisotropic Superconducting Gap in the Spin-Triplet Superconductor Sr₂RuO₄:

Evidence from a Ru-NQR Study”

K. Ishida, H.Mukuda, Y.Kitaoka, K.Asayama, Z.Q.Mao, Y.Mori and Y.Maeno, Phys. Rev. Lett. 84, 5387 (2000).

3."Anisotropic pairing in superconducting Sr₂RuO₄: Ru NMR and NQR studies,"

K. Ishida, Y.Kitaoka, K.Asayama, S.Ikeda, S.NishiZaki, Y.Maeno, K.Yoshida and T.Fujita, Phys. Rev. B 56, R505 (1997).

4. "Novel Character of Spin Fluctuations in Spin-Triplet Superconductor Sr₂RuO₄: ¹⁷O-NMR Study"

H. Mukuda, K. Ishida, Y. Kitaoka, K. Asayama, Z.Q.Mao, Y. Mori and Y. Maeno, J. Phys. Soc. Jpn. 67, 3945 (1998).

5. "Spin-fluctuations in the ruthenium oxide RuO₂, SrRuO₃, CaRuO₃ and Sr₂RuO₄ probed by Ru NMR"

H.Mukuda, K. Ishida, Y. Kitaoka, K. Asayama, R. Kanno, M. Takano, Phys. Rev. B 60, 12279 (1999).

(2) papers about Heavy-Fermion compounds

1. "Evolution from Magnetism to Unconventional Superconductivity in a Series of Ce_xCu₂Si₂"

K. Ishida, Y. Kawasaki, K. Tabuchi, K. Kashima, Y. Kitaoka, K. Asayama, C. Ceibel and F. Steglich,

Phys. Rev. Lett. 82, 5353 (1999).

2. "Ru NMR and NQR probes of the metamagnetic transition in CeRu₂Si₂,"

K. Ishida, Y. Kawasaki, Y. Kitaoka, K. Asayama, H. Nakamura and J.Flouqeut,

Phys. Rev. B 57, R11054 (1998).

3. "Si-NMR study of antiferromagnetic heavy-fermion compounds CePd₂Si₂ and CeRh₂Si₂"

Y. Kawasaki, K. Ishida, Y. Kitaoka and K. Asayama, Phys. Rev. B 58, 8634 (1998).

(3) papers about high-Tc and related compounds

1. "Nuclear Quadrupole Resonance of Cu in Superconducting (La_0.925Sr_0.075)₂CuO₄"

K. Ishida, Y. Kitaoka and K. Asayama, J. Phys. Soc. Jpn. 58, 36-38 (1989).

2. "Cu NMR and NQR Studies of Impurities-Doped YBa₂(Cu_1-xM_x)₃O₇ (M=Zn and Ni),"

K. Ishida, Y. Kitaoka, N. Ogata, T. Kamino, K. Asayama, J. R. Cooper and N. Athanassopoulou,

J. Phys. Soc. Jpn. 62, 2803 (1993).

3. "Observation of a Spin Gap in SrCu₂O₃ Comprising Spin-1/2 Quasi-1D Two-Leg Ladder,"

M.Azuma, Z.Hiroi, M.Takano, K. Ishida and Y.Kitaoka, Phys. Rev. Lett. 73, 3463 (1994).

4. "Al NMR Probe of Local Moments Induced by an Al Impurity in High-T_c Cuprate La_1.85Sr_0.15CuO₄,"

K. Ishida, Y. Kitaoka, K.Yamazoe, K.Asayama, Y.Yamada, Phys. Rev. Lett. 76, 531 (1996).

5. "Pseudogap behavior in single-crystal Bi₂Sr₂CaCu₂O_8+δ probed by Cu NMR"

K. Ishida, K. Yoshida, T. Mito, Y. Tokunaga, Y. Kitaoka, K. Asayama, Y. Nakayama, J. Shimoyama and K. Kishio, Phys. Rev. B 58, R5960 (1998).