(107)「⁷³Ge-Nuclear Magnetic Resonance/Nuclear Quadrupole Resonance Investigation of Magnetic Properties of URhGe」
H. Kotegawa, K. Fukumoto, T. Toyama, H. Tou, H. Harima, A. Harada, Y. Kitaoka, Y. Haga, E. Yamamoto, Y. Onuki, K. M. Itoh, and E. E. Haller
J. Phys. Soc. Jpn. 84, 054710 (2015).

(106)「Detection of an Unconventional Superconducting Phase in the Vicinity of the Strong First-Order Magnetic Transition in CrAs Using ⁷⁵As-Nuclear Quadrupole Resonanc」
H. Kotegawa, S. Nakahara, R. Akamatsu, H. Tou, H. Sugawara, and H. Harima
Phys. Rev. Lett. 114, 117002 (2015).

(105)「Ising-Type Ferromagnetic Ground State Driven by Anisotropic c–f Hybridization in CeRu₂Al₂B」
H. Matsuno, H. Kotegawa, E. Matsuoka, Y. Tomiyama, H. Sugawara, and H. Tou
J. Phys. Soc. Jpn. 83, 103709 (2014).

(104)「Superconductivity of 2.2 K under Pressure in Helimagnet CrAs」
H. Kotegawa, S. Nakahara, H. Tou, H. Sugawara
J. Phys. Soc. Jpn. 83, 093702 (2014). Papers of Editors' Choice

(103)「²⁷Al and ⁹³Nb NMR/NQR Studies on the Pr-Based Heavy Fermion System PrNb₂Al₂₀」
T. Kubo, H. Kotegawa, H. Tou, R. Higashinaka, A. Nakama, Y. Aoki, H. Sato
JPS Conf. Proc. 3, 012031 (2014).

(102)「Structural Phase Transition and Superconductivity in LaPt₂Si₂: ¹³⁹La- and ¹⁹⁵Pt-NMR Studies」
T. Kubo, Y. Kizaki, H. Kotegawa, H. Tou, Y. Nagano, N. Araoka, A. Mitsuda, H. Wada
JPS Conf. Proc. 3, 017031 (2014).

(101)「Strong suppression of coherence effect and appearance of pseudogap in the layered nitride superconductor Li_xZrNCl: ⁹¹Zr- and ¹⁵N-NMR studies」
H. Kotegawa, S. Oshiro, Y. Shimizu, H. Tou, Y. Kasahara, T. Kishiume, Y. Taguchi, and Y. Iwasa
Phys. Rev. B 90, 020503(R) (2014).

(100)「Pressure–Temperature–Magnetic Field Phase Diagram of Ferromagnetic Kondo Lattice CeRuPO」
H. Kotegawa, T. Toyama, S. Kitagawa, H. Tou, R. Yamauchi, E. Matsuoka, and H. Sugawara
J. Phys. Soc. Jpn. 82 (2013) 123711.

(99)「Strong Coupling of Rattling Phonon to Conduction Electrons in Semimetallic Type-I Clathrate Ba₈Ga₁₆Sn₃₀」
H. Tou, K. Sonoda, K. Furumoto, H. Kotegawa, K. Suekuni, M. A. Avila, T. Takabatake
J. Phys. Soc. Jpn. 82 (2013) 114603.

(98)「Pressure-Induced Superconductivity in Mineral Calaverite AuTe₂」
S. Kitagawa, H. Kotegawa, H. Tou, H. Ishii, K. Kudo, M. Nohara, and H. Harima
J. Phys. Soc. Jpn. 82 (2013) 113704.

(97)「Pressure evolution of the metamagnetic transition in UCoAl As measured using ⁵⁹Co NMR」
H. Kotegawa, H. Nohara, H. Tou, T. D. Matsuda, E. Yamamoto, Y. Haga, Z. Fisk, Y. Onuki, D. Aoki, J. Flouquet
J. Korean Phys. Soc. 63, (2013) 341-344.

(96)「Evidence of a rattling transition in the caged compounds LaRu₂Zn₂₀ and LaIr₂Zn₂₀: ¹³⁹La NMR studies」
H. Tou, K. Asaki, H. Kotegawa, T. Onimaru, K. T. Matsumoto, Y. F. Inoue, T. Takabatake
J. Korean Phys. Soc. 63, (2013) 650-653.

(95)「Cu-NMR studies of the heavy-fermion compound CeCu₆ under high magnetic fields」
K. Kuroda, K. Morita, H. Kotegawa, H. Sugawara, H. Tou
J. Korean Phys. Soc. 63, (2013) 1862-1865.

(94)「Magnetic excitations in iron chalcogenide superconductors」
H. Kotegawa and M. Fujita
Sci. Tec. Adv. Mat. 13, (2012) 054302.

(93)「NMR investigation of the iron-based superconductors Ca₄(Mg,Ti)₃Fe₂As₂O_8－y and Ca₅(Sc,Ti)₄Fe₂As₂O_11－y」
Y. Tomita, H. Kotegawa, Y. Tao, H. Tou, H. Ogino, S. Horii, K. Kishio, and J. Shimoyama
Phys. Rev. B 86, (2012) 134527.

(92)「Weak Spin Fluctuation with Finite Wave Vector and Superconducting Gap Symmetry in K_xFe_2-ySe₂: ⁷⁷Se Nuclear Magnetic Resonance」
H. Kotegawa, Y. Tomita, H. Tou, Y. Mizuguchi, H. Takeya, and Y. Takano
J. Phys. Soc. Jpn. 81, (2012) 104712.

(91)「Pressure Study of BiS₂-Based Superconductors Bi₄O₄S₃ and La(O,F)BiS₂」
H. Kotegawa, Y. Tomita, H. Tou, H. Izawa, Y. Mizuguchi, O. Miura, S. Demura, K. Deguchi, and Y. Takano
J. Phys. Soc. Jpn. 81, (2012) 103702. Papers of Editors' Choice

(90)「Ising-Type Magnetic Anisotropy Derived by Γ₇¹ Crystal Electric Field Ground State in Tetragonal CeRu₂Al₂B: ¹¹B and ²⁷Al NMR Studies」
H. Matsuno, H. Nohara, H. Kotegawa, E. Matsuoka, Y. Tomiyama, H. Sugawara, H. Harima, and H. Tou
J. Phys. Soc. Jpn. 81, (2012) 073705.

(89)「Decoupling between Field-Instabilities of Antiferromagnetism and Pseudo-Metamagnetism in Rh-Doped CeRu₂Si₂ Kondo Lattice」 D. Aoki, C. Paulsen, H. Kotegawa, F. Hardy, C. Meingast, P. Haen, M. Boukahil, W. Knafo, E. Ressouche, S. Raymond, and J. Flouquet
J. Phys. Soc. Jpn. 81, (2012) 034711. Papers of Editors' Choice

(88)「NMR Evidence of Freezing of Rattling Motion in LaIr₂Zn₂₀ and LaRu₂Zn₂₀」
K. Asaki, H. Kotegawa, H. Tou, T. Onimaru, K. T. Matsumoto, Y. F. Inoue, and T. Takabatake
J. Phys. Soc. Jpn. 81, (2012) 023711

(87)「Pressure-Induced Structural Phase Transitions in UIr」
H. Kotegawa, S. Araki, T. Akazawa, A. Hori, Y. Irie, S. Fukushima, H. Hidaka, T. C. Kobayashi, K. Takeda, Y. Ohishi, K. Murata, E. Yamamoto, S. Ikeda, Y. Haga, and Y. Onuki
Phys. Rev. B 84, (2011) 054524.

(86)「Ferromagnetic Quantum Critical Endpoint in UCoAl 」
D. Aoki, T. Combier, V. Taufour, T. D. Matsuda, G. Knebel, H. Kotegawa, J. Flouquet
J. Phys. Soc. Jpn. 80, (2011) 094711

(85)「Strong Longitudinal Magnetic Fluctuations near Critical End Point in UCoAl: A ⁵⁹Co-NMR Study」
H. Nohara, H. Kotegawa, H. Tou, T. D. Matsuda, E. Yamamoto, Y. Haga, Z. Fisk, Y. Onuki, D. Aoki, J. Flouquet
J. Phys. Soc. Jpn. 80, (2011) 093707

(84) 「Evolution toward Quantum Critical End Point in UGe₂」
H. Kotegawa, V. Taufour, D. Aoki, G. Knebel, and J. Flouquet
J. Phys. Soc. Jpn. 80, (2011) 083703. Papers of Editors' Choice

(83)「Possible Mass Enhancement by Multipole Fluctuations Excited via the Singlet-Triplet Crystal Electric Field States in PrOs₄Sb₁₂: Sb-NMR Studies Using a Single Crystal」
H. Tou, Y. Inaoka, M. Doi, M. Sera, K. Asaki, H. Kotegawa, H. Sugawara, and H. Sato
J. Phys. Soc. Jpn. 80, (2011) 074703.

(82)「RF Surface Impedance and ⁷⁷Se-NMR Studies of FeSe: Effect of the Sample Quality」
H. Nohara, H. Kotegawa, Y. Hara, H. Tou, Y. Mizuguchi, and Y. Takano
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA120.

(81)「Se/Te-NMR Study of Fe(Te_1-xSe_x)」
Y. Hara, H. Kotegawa, H. Nohara, H. Tou, Y. Mizuguchi, and Y. Takano
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA119.

(80)「⁹Be-NMR Spin-Lattice Relaxation Rate in Heavy-Fermion Superconductor UBe₁₃」
K. Morita, Y. Hara, Z. Sakano, H. Kotegawa, H. Tou, Y. Haga, and Y. Onuki
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA099.

(79)「 NMR Studies of Ba₈Ga₁₆Sn₃₀ Clathrates」
H. Tou, K. Sonoda, Y. Nishikawa, H. Kotegawa, H. Suekuni, T. Onimaru, and T. Takabatake
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA039.

(78) 「Heat Capacity and ac-Susceptibility Measurements of SmOs₄Sb₁₂ under High Pressure」
T. C. Kobayashi, K. Miyazawa, K. Tabira, Y. Ikeda, S. Araki, H. Kotegawa, H. Sugawara, D. Kikuchi, and H. Sato
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA034.

(77)「Anomalous Behavior of Itinerant Weak Ferromagnet LaFe₄As₁₂ in NMR/NQR Studies」
K. Asaki, H. Kotegawa, H. Tou, S. Tatsuoka, R. Higashinaka, T. Namiki, H. Sato
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA033.

(76) 「Superconductivity Reinforced by Magnetic Field and the Magnetic Instability in Uranium Ferromagnets」
D. Aoki, T. D. Matsuda, F. Hardy, C. Meingast, V. Taufour, E. Hassinger, I. Sheikin, C. Paulsen, G. Knebel, H. Kotegawa, and J. Flouquet
J. Phys. Soc. Jpn. 80, Suppl. (2011) SA008.

(75)「Possible Superconducting Symmetry and Magnetic Correlations in K_0.8Fe₂Se₂: A ⁷⁷Se-NMR Study」
H. Kotegawa, Y. Hara, H. Nohara, H. Tou, Y. Mizuguchi, H. Takeya, Y. Takano
Journal of the Physical Society of Japan 80, (2011) 043708.

(74) Pressure Dependence of Superconducting Transition Temperature on Perovskite-Type Fe-Based Superconductors and NMR Study of Sr₂VFeAsO₃
H. Kotegawa, Y. Tao, H. Tou, K. Murata, H. Ogino, S. Horii, K. Kishio, and J. Shimoyama
Journal of the Physical Society of Japan 78, (2011) 014712.

(73) ⁷⁷Se-NMR study of Co-substituted FeSe
H. Kotegawa, Y. Hara, S. Masaki, H. Tou, Y. Mizuguchi, Y. Takano
Physicas C 470, (2010) S426.

(72) ¹⁵N NMR studies of layered nitride superconductor LixZrNCl
H. Tou, S. Oshiro, H. Kotegawa, Y. Taguchi, Y. Kishiume, Y. Kasahara, Y. Iwasa
Physicas C 470, (2010) S658.

(71) Anion height dependence of T_c for the Fe-based superconductor
Y. Mizuguchi, Y. Hara, K. deguchi, S. Tsuda, T. Yamaguchi, K. Takeda, H. Kotegawa, H. Tou, Y. Takano
Superconductor Scienece & Technology 23, (2010) 054013.

(70) Superconductivity in a new iron pnictide oxide (Fe₂As₂)(Sr₄(Mg, Ti)₂O₆)
S. Sato, H. Ogino, N. Kawaguchi, Y. Katsura, K. Kishio, J. Shimoyama, H. Kotegawa, and H. Tou
Superconductor Scienece & Technology 23, (2010) 045001.

(69) Contrasting Pressure Effects in Sr₂VFeAsO₃ and Sr₂ScFePO₃
H. Kotegawa, T. Kawazoe, H. Tou, K. Murata, H. Ogino, K. Kishio, and J. Shimoyama
Journal of the Physical Society of Japan 78, (2009) 123707.

(68) Effect of Uniaxial Stress for Pressure-Induced Superconductor SrFe₂As₂
H. Kotegawa, T. Kawazoe, H. Sugawara, K. Murata, and H. Tou
Journal of the Physical Society of Japan 78, (2009) 083702.

(67) Precise Pressure Dependence of The Superconducting Transition Temperature of FeSe: Resistivity and ⁷⁷Se-NMR Study
S. Masaki, H. Kotegawa, Y. Hara, H. Tou, K. Murata, Y. Mizuguchi, Y. Takano
Journal of the Physical Society of Japan 78, (2009) 063704.

(66) Pressure and magnetic field tuned quantum critical point in the Kondo antiferromagnet CePtZn
S.K. Dhar, R. Kulkarni, H. Hidaka, Y. Toda, H. Kotegawa, T.C. Kobayashi, P. Manfrinetti, and A. Provino
J. Phys.: Condens. Matter 21, 156001 (2009).

(65) Pressure Effect on Yb-Based Strongly Correlated Electron Systems
T. Mito, M. Otani, M. Nakamura, T. Koyama, S. Wada, H. Kotegawa, T.C. Kobayashi, B. Idzikowski, M. Reiffers, J.L. Sarrao
ACTA PHYSICA POLONICA A 115, 47-52 (2009).

(64) Abrupt Emergence of Pressure-Induced Superconductivity of 34K in SrFe₂As₂: A Resistivity Study under Pressure,
H. Kotegawa, H. Sugawara, and H. Tou,
Journal of the Physical Society of Japan 78, 013709 (2009). Papers of Editors' Choice

(63) High Pressure NQR Measurement in CeCu₂Si₂ up to Sudden Disappearance of Superconductivity,
K. Fujiwara, Y. Hata, K. Kobayashi, K. Miyoshi, J. Takeuchi, Y. Shimaoka, H. Kotegawa, T. C. Kobayashi, C. Geibel, F. Steglich,
Journal of the Physical Society of Japan 77, 123711 (2008). Papers of Editors' Choice

(62) Evidence for Unconventional Superconductivity in Arsenic-Free Iron-Based Superconductor FeSe : A ⁷⁷Se-NMR Study
H. Kotegawa, S. Masaki, Y. Awai, H. Tou, Y. Mizuguchi, and Y. Takano,
Journal of the Physical Society of Japan 77, 113703 (2008).

(61) Sb-NQR Study of PrOs₄Sb₁₂ under High Pressure,
S. Kawasaki, K. Katayama, M. Nishiyama, H. Kotegawa, T. C. Kobayashi, H. Sugawara, D. Kikuchi, H. Sato, and G.-q. Zheng,
Journal of the Physical Society of Japan 77, Supplement A 330-332 (2008).

(60) de Haas van Alphen Study of the Pr-based Filled Skutterudite PrOs₄P₁₂,
H. Sugawara, Y. Iwahashi, K. Magishi, T. Saito, K. Koyama, H. Harima, D. Kikuchi, H. Sato, T. Endo, R. Settai, Y. Onuki, N. Wada, H. Kotegawa, and T. C. Kobayashi,
Journal of the Physical Society of Japan 77, Supplement A 108-113 (2008).

(59) Anomalous Kondo Effect and Ordered State in Heavy Fermion System SmOs₄Sb₁₂: Resistivity, Sb-NQR, and Magnetization Measurements under High Pressure,
H. Kotegawa, K. Tabira, Y. Irie, H. Hidaka, T. C Kobayashi, D. Kikuchi, K. Tanaka, S. Tatsuoka, H. Sugawara, and H. Sato,
Journal of the Physical Society of Japan 77, Supplement A 90-95 (2008).

(58) Evolution of transport and low-energy spin fluctuations in YbXCu4 (X = Au and Pd) with the application of magnetic field,
A. Yamamoto, T. Yokoyama, S. Wada, K. Tabira, H. Kotegawa, T.C. Kobayashi, and J.L. Sarrao,
Physica B 403, 772-774 (2008).

(57) Observation of charge fluctuations in skutterudite compounds through an Sb-NQR measurement,
H. Kotegawa, Y. Irie, H. Hidaka, T.C. Kobayashi, D. Kikuchi, H. Sugawara, and H. Sato,
Physica B 403, 1205-1207 (2008).

(56) 73Ge-NQR study of heavy-fermion compound CeNi2Ge2,
S. Kawasaki, T. Sada, T. Miyoshi, H. Kotegawa, H. Mukuda, Y. Kitaoka, T.C. Kobayashi, T. Fukuhara, K. Maezawa, K.M. Itoh, and E.E Haller,
Journal of Magnetism and Magnetic Materials 310, 590-592 (2007).

(55) Effect of uniaxial stress on pressure-induced metal-insulator transition in PrFe4P12,
H. Hidaka, N. Wada, H. Kotegawa, T.C. Kobayashi, D. Kikuchi, H. Sato, and H. Sugawara
Journal of Magnetism and Magnetic Materials 310, e228-e230 (2007).

(54) High-quality single crystal growth and physical properties in a ferromagnet UIr,
E. Yamamoto, Y. Haga, S. Ikeda, T.D. Matsuda, T. Akazawa, H. Kotegawa, T.C. Kobayashi, and Y. Onuki,
Journal of Magnetism and Magnetic Materials 310, e123-e125 (2007).

(53) Muon spin rotation study of magnetism in multilayer HgBa2Ca4Cu5Oy superconductor,
K. Tokiwa, S. Mikusu, W. Higemoto, K. Nishiyama, A. Iyo, Y. Tanaka, H. Kotegawa, H. Mukuda, and Y. Kitaoka,
Physica C 460-462, 892-895 (2007).

(52) Uniform mixing of high-Tc superconductivity and antiferromagnetism on a single CuO2 plane in five-layered cuprates,
H. Mukuda, M. Abe, Y. Kitaoka, H. Kotegawa, K. Tokiwa, T. Watanabe, A. Iyo, H. Kito, Y. Tanaka, and Y. Kodama,
Physica C 460-462, 36-39 (2007).

(51) Connection between Charge Fluctuations and the Coherent Temperature in the Heavy-Fermion System SmOs4Sb12: A 121,123Sb-NQR Study,
H. Kotegawa, H. Hidaka, T.C. Kobayashi, D. Kikuchi, H. Sugawara, and H. Sato,
Physical Review Letters 99, 156408-1-156408-4 (2007).

(50) Nonmagnetic indenter-type high-pressure cell for magnetic measurements,
T.C. Kobayashi, H. Hidaka, H. Kotegawa, K. Fujiwara, and M.I. Eremets,
Review of Scientific Instruments 78, 023909-1-023909-5 (2007).

(49) Pressure-Temperature Phase Diagram and Superconductivity in UIr,
T.C. Kobayashi, A. Hori, S. Fukushima, H. Hidaka, H. Kotegawa, T. Akazawa, K. Takeda, Y. Ohishi, and E. Yamamoto,
Journal of the Physical Society of Japan 76, 051007-1-051007-11 (2007).

(48) Anisotropic behavior in resistivity of RAgSb2 (R=Ce, La),
Y. Watanabe, Y. Inada, H. Hidaka, H. Kotegawa, T.C. Kobayashi, T.D. Matsuda, and D. Aoki
Physica B 378-380, 827-828 (2006).

(47) Pressure effect on heavy fermion compound YbCu5,
T. Mito, M. Nakamura, M. Shimoide, M. Otani, T. Koyama, S. Wada, H. Kotegawa, T.C. Kobarashi, B. Idzikowski, M. Reiffers, and J.L. Sarrao,
Physica B 378-380, 732-733 (2006).

(46) Uniform mixing of high-Tc superconductivity and antiferromagnetism in HgBa2Ca4Cu5O12+ﾎｴ,
H. Mukuda, M. Abe, Y. Araki, H. Kotegawa, Y. Kitaoka, K. Tokiwa, T. Watanabe, A. Iyo, and Y. Tanaka,
Physica B 378-380, 457-458 (2006).

(45) Pressure-induced superconductivity in CeNiGe3,
H. Kotegawa, T. Miyoshi, K. Takeda, S. Fukushima, H. Hidaka, K. Tabata, T.C. Kobayashi, M. Nakashima, A. Thamizhavel, R. Settai, and Y. Onuki,
Physica B 378-380, 419-420 (2006).

(44) Pressure-induced superconductivity in ferromagnet UIr without inversion symmetry,
T.C. Kobayashi, S. Fukushima, H. Hidaka, H. Kotegawa, T. Akazawa, E. Yamamoto, Y. Haga, R. Settai, and Y. Onuki,
Physica B 378-380, 355-358 (2006).

(43) 115In-NQR study of antiferromagnetism and superconductivity in CeRhIn5 and CeIn3 under pressure,
S. Kawasaki, M. Yashima, H. Kotegawa, T. Mito, Y. Kawasaki, G.-q. Zheng, Y. Kitaoka, H. Shishido, S. Araki, D. Aoki, Y. Haga, R. Settai, and Y. Onuki,
Journal of Physics and Chemistry of Solids 67, 497-499 (2006).

(42) Anisotropic Residual Resistivity Under High Pressure in UIr,
A. Hori, H. Hidaka, H. Kotegawa, T.C. Kobayashi, T. Akazawa, S. Ikeda, E.Yamamoto, Y. Haga, R. Settai, and Y. Onuki,
Journal of the Physical Society of Japan 75, Supplement 82-84 (2006).

(41) Transport and Magnetic Properties of Pressure-Induced Insulating Phase in PrFe4P12,
H. Hidaka, H. Kotegawa, S. Fukushima, N. Wada, T.C. Kobayashi, H. Harima, K. Fujiwara, D. Kikuchi, H. Sato, and H. Sugawara,
Journal of the Physical Society of Japan 75, 094709-1-094709-8 (2006).

(40) Pressure-Induced Superconductivity Emerging from Antiferromagnetic Phase in CeNiGe3,
H. Kotegawa, K. Takeda, T. Miyoshi, S. Fukushima, H. Hidaka, T.C. Kobayashi, T. Akazawa, Y. Ohishi, M. Nakashima, A. Thamizhavel, R. Settai, and Y. Onuki,
Journal of the Physical Society of Japan 75, 044713-1-044713-6 (2006).

(39) Evidence for Unconventional Superconducting Fluctuations in Heavy-Fermion Compound CeNi2Ge2,
S. Kawasaki, T. Sada, T. Miyoshi, H. Kotegawa, H. Mukuda, Y. Kitaoka, T.C. Kobayashi, T. Fukuhara, K. Maezawa, K.M. Itoh, and E.E. Haller,
Journal of the Physical Society of Japan 75, 043702-1-043702-4 (2006).

(38) Pressure-induced charge ordering of LiV2O4,
K. Takeda, H. Hidaka, H. Kotegawa, T.C. Kobayashi, K. Shimizu, H. Harima, K. Fujiwara, K. Miyoshi, J. Takeuchi, Y. Ohishi, T. Adachi, M. Takata, E. Nishibori, M. Sakata, T. Watanuki, and O. Shimomura,
Physica B 359-361, 1312-1314 (2005).

(37) Pressure-induced superconductivity in UIr without inversion symmetry,
T. Akazawa, H. Hidaka, H. Kotegawa, T.C. Kobayashi, T. Fujiwara, E. Yamamoto, Y. Haga, R. Settai, and Y. Onuki,
Physica B 359-361, 1138-1140 (2005).

(36) Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2: 73Ge-NMR/NQR study,
A. Harada, H. Kotegawa, Y. Kawasaki, G.-q. Zheng, Y. Kitaoka, E. Yamamoto, Y. Haga, Y. Onuki, K. Itoh, and E.E. Haller,
Physica B 359-361, 1057-1059 (2005).

(35) Metal-insulator transition under high pressure in PrFe4P12,
H. Hidaka, I. Ando, H. Kotegawa, T.C. Kobayashi, H. Harima, M. Kobayashi, H. Sugawara, and H. Sato,
Physica B 359-361, 886-888 (2005).

(34) 121Sb-NMR studies of single-crystal PrOs4Sb12,
H. Tou, M. Doi, M. Sera, M. Yogi, Y. Kitaoka, H. Kotegawa, G.-q. Zheng, H. Harima, H. Sugawara, and H. Sato,
Physica B 359-361, 892-894 (2005).

(33) 115In-NQR study of antiferromagnetism and superconductivity near magnetic criticality in CeIn3,
S. Kawasaki, T. Mito, Y. Kawasaki, H. Kotegawa, G.-q. Zheng, Y. Kitaoka, H. Shishido, S. Araki, R. Settai, and Y. Onuki,
Physica B 359-361, 413-415 (2005).

(32) NMR/NQR experiments on heavy-fermion systems and superconductors,
Y. Kitaoka, S. Kawasaki, Y. Kawasaki, H. Kotegawa, and T. Mito,
Physica B 359-361, 341-348 (2005).

(31) Novel phase diagram of superconductivity and ferromagnetism in UGe2: a 73Ge-NQR study under high pressure,
Y. Kitaoka, H. Kotegawa, A. Harada, S. Kawasaki, Y. Kawasaki, Y. Haga, E. Yamamoto, Y. Onuki, K.M. Itoh, E.E. Haller, and H. Harima,
Journal of Physics: Condensed Matter 17, S975-S986 (2005).

(30) Cooperative Phenomenon of Ferromagnetism and Unconventional Superconductivity in UGe2: A 73Ge-NQR Study under Pressure,
A. Harada, S. Kawasaki, H. Kotegawa, Y. Kitaoka, Y. Haga, E. Yamamoto, Y. Onuki, K.M. Itoh, E.E. Haller, and H. Harima,
Journal of the Physical Society of Japan 74, 2675-2678 (2005).

(29) Heavy Fermion Compound SmOs4Sb12 in Vicinity of Ferromagnetic Critical Point,
H. Kotegawa, H. Hidaka, Y. Shimaoka, T. Miki, T.C. Kobayashi, D. Kikuchi, H. Sugawara, and H. Sato,
Journal of the Physical Society of Japan 74, 2173-2176 (2005).

(28) Novel Phase Transition Near the Quantum Critical Point in the Filled-Skutterudite Compound CeOs4Sb12: An Sb-NQR Study,
M. Yogi, H. Kotegawa, G.-q. Zheng, Y. Kitaoka, S. Ohsaki, H. Sugawara, and H. Sato,
Journal of the Physical Society of Japan 74, 1950-1953 (2005).

(27) Evidence for Uniform Coexistence of Ferromagnetism and Unconventional Superconductivity in UGe2: A 73Ge-NQR Study under Pressure,
H. Kotegawa, A. Harada, S. Kawasaki, Y. Kawasaki, Y. Kitaoka, Y. Haga, E. Yamamoto, Y. Onuki, K. M. Itoh, E. E. Haller, and H. Harima,
Journal of the Physical Society of Japan 74, 705-711 (2005).

(26) Pressure-induced metal-insulator transition in the filled skutterudite PrFe4P12,
H. Hidaka, I. Ando, H. Kotegawa, T.C. Kobayashi, H. Harima, M. Kobayashi, H. Sugawara, and H. Sato,
Physical Review B 71, 073102-1-073102-4 (2005).

(25) Static and dynamical properties in the Pr-based filled skutterudite compound PrFe4P12 revealed by a 31P-NMR study,
K. Ishida, H. Murakawa, K. Kitagawa, Y. Ihara, H. Kotegawa, M. Yogi, Y. Kitaoka, B.-L. Young, M.S. Rose, D.E. MacLaughlin, H. Sugawara, T.D. Matsuda, Y. Aoki, H. Sato, and H. Harima,
Physical Review B 71, 024424-1-024424-9 (2005).

(24) Coexistence of antiferromagnetic order and superconductivity in five-layered Hg-based high-Tc cuprate,
H. Kotegawa, Y. Kitaoka, Y. Araki, Y. Tokunaga, G.-q. Zheng, K. Tokiwa, T. Watanabe, A. Iyo, H. Kito, Y. Tanaka, and H. Ihara,
Physica C 408-410, 761-763 (2004).

(23) The microscopic coexistence of superconductivity and ferromagnetism in UGe2: 73Ge-NMR/NQR study,
H. Kotegawa, S. Kawasaki, A. Harada, Y. Kawasaki, K. Okamoto, G.-q. Zheng, Y. Kitaoka, E. Yamamoto, Y. Haga, Y. Onuki, K.M. Itoh, and E.E. Haller,
Journal of Magnetism and Magnetic Materials 272-276, E27-E28 (2004).

(22) Sb-NQR study of the Kondo semiconductor CeOs4Sb12,
M. Yogi, H. Kotegawa, G.-q. Zheng, Y. Kitaoka, S. Osaki, H. Sugawara, and H. Sato,
Journal of Magnetism and Magnetic Materials 272-276, E45-E46 (2004).

(21) Novel Phase Separation and Spin Dynamics of Lightly Doped La2-xSr2CuO4 Probed by La-Nuclear Quadrupole Resonance,
K. Ishida, H. Aya, Y. Tokunaga, H. Kotegawa, Y. Kitaoka, M. Fujita, and K. Yamada,
Physical Review Letters 92, 257001-1-257001-4 (2004).

(20) Pressure-induced Superconductivity in UIr,
T. Akazawa, H. Hidaka, H. Kotegawa, T.C. Kobayashi, T. Fujiwara, E. Yamamoto, Y. Haga, R. Settai, and Y. Onuki,
Journal of the Physical Society of Japan 73, 3129-3134 (2004).

(19) New Superconducting and Magnetic Phases Emerge on the Magnetic Criticality in CeIn3,
S. Kawasaki, T. Mito, Y. Kawasaki, H. Kotegawa, G.-q. Zheng, Y. Kitaoka, H. Shishido, S. Araki, R. Settai, and Y. Onuki,
Journal of the Physical Society of Japan 73, 1647-1650 (2004).

(18) Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu5Oy: Cu-NMR study,
H. Kotegawa, Y. Tokunaga, Y. Araki, G.-q. Zheng, Y. Kitaoka, K. Tokiwa, K. Ito, T. Watanabe, A. Iyo, Y. Tanaka, and H. Ihara,
Physical Review B 69, 014501-1-014501-6 (2004).

(17) Unusual Superconductivity in Skutterudite Compound PrOs4Sb12,
H. Kotegawa, M. Yogi, Y. Imamura, G.-q. Zheng, Y. Kitaoka, S. Ohsaki, H. Sugawara, Y. Aoki, and H. Sato,
Acta Physica Polonica B 34, 1003-1006 (2003).

(16) Microscopic coexistence of antiferromagnetism and superconductivity in HgBa2Ca4Cu5Oy: Cu-NMR study,
H. Kotegawa, Y. Tokunaga, Y. Araki, G.-q. Zheng, Y. Kitaoka, K. Tokiwa, T. Watanabe, A. Iyo, H. Kito, Y. Tanaka, and H. Ihara,
Physica C 388-389, 237-238 (2003).

(15) Unconventional superconductivity in ferromagnetic UGe2: a 73Ge nuclear magnetic resonance/nuclear quadrupole resonance study,
H. Kotegawa, S. Kawasaki, A. Harada, Y. Kawasaki, K. Okamoto, G.-q. Zheng, Y. Kitaoka, E. Yamamoto, Y. Haga, Y. Onuki, K.M. Itoh, and E.E. Haller,
Journal of Physics: Condensed Matter 15, S2043-S2046 (2003).

(14) Sb-NQR probe for superconducting properties in the Pr-based filled-skutterudite compound PrRu4Sb12,
M. Yogi, H. Kotegawa, Y. Imamura, G.-q. Zheng, Y. Kitaoka, H. Sugawara, and H. Sato,
Physical Review B 67, 180501-1-18501-4 (2003).

(13) Evidence for Unconventional Strong-Coupling Superconductivity in PrOs4Sb12: An Sb Nuclear Quadrupole Resonance Study,
H. Kotegawa, M. Yogi, Y. Imamura, Y. Kawasaki, G.-q. Zheng, Y. Kitaoka, S. Ohsaki, H. Sugawara, Y. Aoki, and H. Sato,
Physical Review Letters 90, 027001-1-027001-4 (2003).

(12) Evidence for strong coupling s-wave superconductivity in MgB2:11B-NMR Study of MgB2 and the related materials,
H. Kotegawa, K. Ishida, Y. Kitaoka, T. Muranaka, N. Nakagawa, H. Takagiwa, and J. Akimitsu,
Physica C 378-381, 25-32 (2002).

(11) Strong coupling s-wave superconductivity in MgB2 : 11B-NMR Study of MgB2 and Al-doped MgB2,
H. Kotegawa, K. Ishida, Y. Kitaoka, T. Muranaka, N. Nakagawa, H. Takagiwa, and J. Akimitsu,
Journal of the Physical Society of Japan 71, Supplement 332-334 (2002).

(10) Evidence for High-frequency Phonon Mediated S-wave Superconductivity : 11B-NMR Study of Al-doped MgB2,
H. Kotegawa, K. Ishida, Y. Kitaoka, T. Muranaka, N. Nakagawa, H. Takagiwa, and J. Akimitsu,
Physical Review B 65, 064516-1-064516-6 (2002).

(9) Superconducting and magnetic characteristics in multilayered high-Tc cuprates TlBa2Ca2Cu3O10-y with Tc =130 K probed by Cu- and Tl-NMR : why Tc can be so high,
H. Kotegawa, Y. Tokunaga, K. Ishida, G.-q. Zheng. Y. Kitaoka, A. Iyo, Y. Tanaka, and H, Ihara,
Physical Review B 65, 184504-1-184504-4 (2002).

(8) NMR Study of Carrier Distribution and Superconductivity in Multilayered High-Tc Cuprates,
H. Kotegawa, Y. Tokunaga, K. Ishida, G.-q. Zheng. Y. Kitaoka, H. Kito, A. Iyo, H. Ihara, K. Tanaka, K. Tokiwa, and T. Watanabe,
Journal of Physics and Chemistry of Solids 62, 171-175 (2001).

(7) Coexistence of Magnetic ordering and Superconductivity in Magnetic Superconductor RuSr2YCu2O8 revealed by 63Cu-NMR,
Y. Tokunaga, H. Kotagawa, K. Ishida, Y. Kitaoka, H. Takagiwa, and J. Akimitsu,
Physica C 364-365, 379-382 (2001).

(6) Evidence for Strong-coupling S-wave Superconductivity in MgB2 : 11B NMR Study,
H. Kotegawa, K. Ishida, Y. Kitaoka, T. Muranaka, and J. Akimitsu,
Physical Review Letters 87, 127001-1-127001-4 (2001).

(5) Unusual magnetic and superconducting characteristics in multilayered high-Tc cuprates: 63Cu-NMR study,
H. Kotegawa, Y. Tokunaga, K. Ishida, G.-q. Zheng. Y. Kitaoka, H. Kito, A. Iyo, K. Tokiwa, T. Watanabe, and H, Ihara,
Physical Review B 64, 064515-1-064515-5 (2001).

(4) NMR Evidence for Coexistence of Superconductivity and Ferromagnetic Component in Magnetic Superconductor RuSr2YCu2O8 : 99,101Ru- and 63Cu-NMR,
Y. Tokunaga, H. Kotagawa, K. Ishida, Y. Kitaoka, H. Takagiwa, and J. Akimitsu,
Physical Review Letters 86, 5767-5770 (2001).

(3) Unconventional superconducting characteristics in the mulyilayered high-Tc cuprate (Cu0.6C0.4)Ba2Ca3Cu4O12+y probed by 63Cu NMR,
Y. Tokunaga, H. Kotagawa, K. Ishida, Y. Kitaoka, K. Tokiwa, A. Iyo, and H. Ihara,
Physica C 341-348, 2121-2122 (2000).

(2) Carrier distribution and superconductivity in multilayered high-Tc cuprates proved by 63Cu NMR,
Y. Tokunaga, H. Kotegawa, K. Ishida, G.-q. Zheng, Y. Kitaoka, K. Tokiwa, A. Iyo, and H. Ihara,
Journal of Low Temperature Physics 117, 473-474 (1999).

(1) Pseudogap behavior in single crystals of Bi2Sr2CaCu2O8+δ,
K. Ishida, Y. Tokunaga, H. Kotegawa, K. Yoshida, T. Mito, Y. Kitaoka, K. Asayama, Y. Nakayama, J. Simomura, and K. Kishio,
Physica B 259-261, 559-561 (1999).