研究実績

Publications

論文

2023年
  1. M. Yokoyama, H. Nishigaki, S. Ogawa, S. Nita, H. Shiokawa, K. Matano, Guo-qing Zheng:
    Manipulating the nematic director by magnetic fields in the spin-triplet superconducting state of CuxBi2Se3
    Phys. Rev. B 107, L100505 (2023).
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2022年
  1. 川崎慎司, 鄭国慶:
    大きいフェルミ面と量子臨界点の協奏が生み出す奇妙な超伝導
    日本物理学会誌 「最近の研究から」vol.77 No 6 p.361 (2022).
  2. J. Luo, Z. Zhao, Y. Z. Zhou, J. Yang, A. F. Fang, H. T. Yang, H. J. Gao, R. Zhou and Guo-qing Zheng:
    Possible star-of-David pattern charge density wave with additional modulation in the kagome superconductor CsV3Sb5
    npj Quantum Materials 7, 30 (2022).
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2021年
  1. W. Wang, J. Luo, C. G. Wang, J. Yang, Y. Kodama, R. Zhou, and Guo-qing Zheng:
    Microscopic evidence for an intra-unit-cell electronic nematicity inside the pseudogap phase in YBa2Cu4O8
    SCIENCE CHINA Physics, Mechanics & Astronomy 63, 237413(2021).
  2. A. F. Fang, R. Zhou, H. Tsukada, J. Yang, Z. Deng, X. C. Wang, C. Q. Jin, and Guo-Qing Zheng:
    Nodal superconducting gap in LiFeP revealed by NMR: Contrast with LiFeAs
    Chin. Phys. B,30, 047403(2021).
  3. C. Girod, D. LeBoeuf, A. Demuer, G. Seyfarth, S. Imajo, K. Kindo, Y. Kohama, M. Lizaire, A. Legros, A. Gourgout, H. Takagi, T. Kurosawa, M. Oda, N. Momono, J. Chang, S. Ono, G.-q. Zheng, C. Marcenat, L. Taillefer, and T. Klein:
    Normal state specific heat in the cuprate superconductors La2-xSrxCuO4 and Bi2+ySr2-x-yLaxCuO6+δ near the critical point of the pseudogap phase.
    Phys. Rev. B103,214506 (2021).
  4. M. Lizaire, A. Legros , A. Gourgout, S. Benhabib, S. Badoux, F. Laliberte, M.-E. Boulanger , A. Ataei, G. Grissonnanche , D. LeBoeuf, S. Licciardello, S. Wiedmann, S. Ono, H. Raffy, S. Kawasaki, G.-Q. Zheng, N. Doiron-Leyraud, C. Proust, and L. Taillefer:
    Transport signatures of the pseudogap critical point in the cuprate superconductor Bi2Sr2-xLaxCuO6+δ
    Phys. Rev. B 104, 014515 (2021).
  5. Shinji Kawasaki, Madoka Ito, Dai Kamijima, Chengtian Lin, and Guo-qing Zheng:
    Charge Order and Fluctuations in Bi2Sr2-xLaxCuO6+δ Revealed by 63,65Cu-Nuclear Magnetic Resonance
    Journal of the Physical Society of Japan 90, 111008 (2021).
  6. Kazuaki Matano, Ryo Ogura, Mateo Fountaine , Harald O. Jeschke , Shinji Kawasaki, and Guo-qing Zheng:
    Antiferromagnetic spin fluctuations and superconductivity in NbRh2B2 and TaRh2B2 with a chiral crystal structure.
    Phys. Rev. B,104, 224508 (2021).
  7. Jie Yang, Jun Luo, Changjiang Yi, Youguo Shi, Yi Zhou, Guo-qing Zhen:
    Spin-triplet superconductivity in K2Cr3As3.
    Phys. Rev. B103,214506 (2021).
  8. J. Luo, Z. Zhao, Y. Z. Zhou, J. Yang, A. F. Fang, H. T. Yang, H. J. Gao, R. Zhou and Guo-qing Zheng:
    Possible star-of-David pattern charge density wave with additional modulation in the kagome superconductor CsV3Sb5
    npj Quantum Materials 7, 30 (2022).
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2020年
  1. Shinji Kawasaki, Toshihide Oka, Akira Sorime, Yuji Kogame, Kazuhiro Uemoto, Kazuaki Matano, Jing Guo, Shu Cai, Liling Sun, John L. Sarrao, Joe D. Thompson, and Guo-qing Zheng:
    Localized-to-itinerant transition preceding antiferromagnetic quantum critical point and gapless superconductivity in CeRh0.5Ir0.5In5
    Commun. Phys. 3, 148(2020).
  2. Jun Luo, Chunguang Wang, Zhicheng Wang, Qi Guo, Ji Yang, Rui Zhou, K. Matano, T. Oguchi, Zhian Ren, Guanghan Cao, Guo-Qing Zhen:
    Landau diamagnetism and Weyl-fermion excitations in TaAs revealed by 75As NMR and NQR
    Phys. Rev. B101, 241110(R)(2020).
  3. Jun Luo, Chunguang Wang, Zhicheng Wang, Qi Guo, Ji Yang, Rui Zhou, K. Matano, T. Oguchi, Zhian Ren, Guanghan Cao, Guo-Qing Zheng:
    NMR and NQR studies on transition-metal arsenide superconductors LaRu2As2, KCa2Fe4As4F2, and A2Cr3As3
    Chinese. Phys. B29, 067402(2020).
  4. T. Kawai, C. G. Wang, Y. Kandori, Y. Honoki, K. Matano, T. Kambe, Guo-qing Zheng:
    Direction and symmetry transition of the vector order parameter in topological superconductors CuxBi2Se3
    Nature Commun. 11, 235 (2020).
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2018年
  1. 川崎慎司, 鄭国慶:
    銅酸化物高温超伝導体における擬ギャップと磁場誘起電荷密度波Bi2Sr2-xLaxCuO6+δの場合
    日本物理学会誌 「最近の研究から」vol.73 No 8 p.558 (2018).
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2017年
  1. S. Kawasaki, Z. Li, M. Kitahashi, C.T. Lin, P.L. Kuhns, A.P. Reyes & Guo-qing Zheng :
    Charge-density-wave order takes over antiferromagnetism in Bi2Sr2-xLaxCuO6+δ Superconductors
    Nature Commun. 8, 1267 (2017).
    2. 　
  2. Satoki Maeda, Shota Katsube, and Guo-qing Zheng:
    Quasi-localized Impurity State in Doped Topological Crystalline Insulator Sn0.9In0.1Te Probed by 125Te-NMR
    J. Phys. Soc. Jpn. 86, 024702 (2017).
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2016年
  1. K. Matano, R. Yatagai, S. Maeda, and Guo-qing Zheng:
    Full-gap superconductivity in noncentrosymmetric Re6Zr, Re27Zr5
    Phys. Rev. B 94, 214513 (2016).
  2. K. Matano, M. Kriener, K. Segawa, Y. Ando, Guo-qing Zheng:
    Spin-rotation symmetry breaking in the superconducting state of CuxBi2Se3
    Nature Physics 12, 852 (2016).
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2015年
  1. J. Yang, Z. T. Tang, G. H. Cao, and Guo-qing Zheng:
    Ferromagnetism spin fluctuation and unconventional superconductivity in Rb2Cr3As3 revealed by 75As NMR and NQR
    Phys. Rev. Lett 115, 147002 (2015).
  2. S. Kawasaki, T. mabuchi, S. Maeda, T. Adachi, T. Mizukami, K. Kudo, M. Nohara, and Guo-qing Zheng:
    Dopeing-enhanced antiferromagnetism in Ca1-xLaxFeAs2
    Phys. Rev. B 92, 180508 (2015).
  3. S. Maeda, K. Matano, R. Yatagai, T. Oguchi, and Guo-qing Zheng:
    Superconductivity and the electronic phase diagram of LaPt2-xGe2+x
    Phys. Rev. B 91, 174516 (2015).
  4. S. Kawasaki, Y. Tani, T. mabuchi, K. Kudo, Y. Nishikubo, D. Mitsuoka, M. Nohara, and Guo-qing Zheng:
    Coexistence of multiple charge density waves and superconductivity in SrPt2As2 revealed by 75As-NMR/NQR and 195Pt-NMR
    Phys. Rev. B 91, 060510 (2015).
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2014年
  1. Keiji Ueshima, Fei Han, Xiyu Zhu, Hai-Hu Wen, Shinji Kawasaki, Guo-qing Zheng:
    Magnetism and superconductivity in Sr2VFeAsO3 revealed by 75As- and 51V-NMR under elevated pressures
    Phys. Rev. B 89, 184506 (2014).
  2. K. Matano, K. Arima, S. Maeda, Y. Nishikubo, K. Kudo, M. Nohara, and Guo-qing Zheng:
    Spin-singlet superconductivity with a full gap in locally noncentrosymmetric SrPtAs
    Phys. Rev. B 89, 140504(R) (2014).
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2013年
  1. R. Zhou, Z. Li, J. Yang, D.L. Sun, C.T. Lin and Guo-qing Zheng:
    Quantum criticality in electron-doped BaFe2-xNixAs2
    Nature Commun. 4, 2265 (2013).
  2. G. Bao, Y. Inada, G. Eguchi, Y. Maeno, M. Ichioka, Guo-qing Zheng:
    Influence on superconductivity in the parity mixing superconductor Li2T3B(T:Pt,Pd) by non-magnetic impurity and defect doping
    Physica C 494, 95-98 (2013).
  3. Kazuaki Matano, Satoki Maeda, Hiroki Sawaoka, Yuji Muro, Toshiro Takabatake, Bhanu Joshi, Srinivasan Ramakrishnan, Kenji Kawashima, Jun Akimitsu, Guo-qing Zheng:
    NMR and NQR Studies on Non-centrosymmetric Superconductors Re7B3, LaBiPt, and BiPd
    J. Phys. Soc. Jpn. 82, 084711 (2013).
    4. 　 　
  4. K Arima, K Matano, S Harada, G Z Bao, Y Inada and G Q Zheng:
    NMR study of the impurity effects in noncentrosymmetric superconductors Li2(Pd,Pt)3B
    J. Phys.: Conf. Ser. 449 012034 (2013).
    5. 　 　
  5. Satoki Maeda, Kazuaki Matano, Hiroki Sawaoka, Yoshihiko Inada, and Guo-qing Zheng:
    Superconductivity in Tetragonal LaPt2-xGe2+x
    J. Phys. Soc. Jpn. 82, 065002 (2013).
    6. 　
  6. Shinji Kawasaki, Junji Fukui, Takeshi Motoyama, Yuta Suzuki, Seiji Shibasaki, Guo-qing Zheng:
    The Mott State and Superconductivity in Face-Centred Cubic Structured Cs3C60: A 133Cs-Nuclear Magnetic Resonance Study under Pressure
    J. Phys. Soc. Jpn. 82, 014709 (2013).
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2012年
    　
  1. S. Harada, J. J. Zhou, Y. G. Yao, Y. Inada, and Guo-qing Zheng:
    Abrupt enhancement of noncentrosymmetry and appearance of a spin-triplet superconducting state in Li2(Pd1-xPtx)3B beyond x=0.8
    Phys. Rev. B 86, 220502 (2012).
    2. 　
  2. Z. Li, R. Zhou, Y. Liu, D. L. Sun, J. Yang, C. T. Lin, and Guo-qing Zheng:
    Microscopic coexistence of antiferromagnetic order and superconductivity in Ba0.77K0.23Fe2As2
    Phys. Rev. B 86, 180501 (2012).
    3. 　
  3. Jia-Wei Mei, Shinji Kawasaki, Guo-Qing Zheng, Zheng-Yu Weng, and Xiao-Gang Wen:
    Luttinger-volume violating Fermi liquid in the pseudogap phase of the cuprate superconductors
    Phys. Rev. B 85, 134519 (2012).
    4. 　
  4. T. Oka, Z. Li, S. Kawasaki, G. F. Chen, N. L. Wang, and Guo-qing Zheng:
    Antiferromagnetic Spin Fluctuations above the Dome-Shaped and Full-Gap Superconducting States of LaFeAsO1-xFx Revealed by 75As-Nuclear Quadrupole Resonance
    Phys. Rev. Lett. 108, 047001 (2012).
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2011年
  1. Z. Li, D. L. Sun, C. T. Lin, Y. H. Su, J. P. Hu, and G.-Q. Zheng:
    Nodeless energy gaps of single-crystalline Ba0.68K0.32Fe2As2 as seen via 75As NMR
    Phys. Rev. B 83, 140506(R) (2011).
  2. D. C. Peets, G. Eguchi, M. Kriener, S. Harada, Sk. Md. Shamsuzzamen, Y. Inada, G.-Q. Zheng, and Y. Maeno:
    Magnetic phase diagram of Li2(Pd1-xPtx)3B by ac susceptometry
    Phys. Rev. B 84, 054521 (2011).
  3. S. Kawasaki, T. Oka, T. Tabuchi, X. F. Wang, X. H. Chen, Guo-qing Zheng:
    As-NMR/NQR Study of Pressure-Induced Superconductivity in CaFe2As2
    J. Phys. Chem. Solids. 72, 501-504 (2011).
  4. T. Oka, T. Tabuchi, Z. Li, S. Kawasaki, G.F. Chen, J.L. Luo, N.L. Wang, Guo-qing Zheng:
    As-NQR study of superconductivity in LaRAsO1-xFx (R=Fe and Ni)
    J. Phys. Chem. Solids. 72, 497-500 (2011).
  5. Z. Li, S. Kawasaki, T. Oka, T. Tabuchi, Y. Ooe, M. Ichioka, Z.A. Ren, Z.X. Zhao, J.L. Luo, N.L. Wang, X.C. Wang, Q.Q. Liu, C.Q. Jin, C.T. Lin, Guo-qing Zheng:
    Multiple superconducting gap and anisotropic spin fluctuations in iron arsenides: Comparison with nickel analog
    J. Phys. Chem. Solids. 72, 492-496 (2011).
  6. Shinji Kawasaki, Toshihide Oka, Takahisa Tabuchi, X. F. Wang, X. H. Chen, Guo-qing Zheng:
    As-NMR/NQR study of CaFe2As2 under pressure
    J. Phys. Soc. Jpn. 80, SA116 (2011).
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2010年
    　
  1. S. Kawasaki, T. Tabuchi, X. F. Wang, X. H. Chen, and Guo-qing Zheng:
    Pressure-induced unconventional superconductivity near a quantum critical point in CaFe2As2
    Supercond. Sci. Technol. 23, 054004 (2010). (Invited paper)
  2. Shinji Kawasaki, Chengtian Lin, Philip L. Kuhns, Arneil P. Reyes, and Guo-qing Zheng:
    Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi2Sr2-xLaxCuO6+δ Revealed by 63,65Cu-Nuclear Magnetic Resonance in Very High Magnetic Fields
    Phys. Rev. Lett. 105, 137002 (2010).
  3. T. Tabuchi, Z. Li, T. Oka, G. F. Chen, S. Kawasaki, J. L. Luo, N. L. Wang, and Guo-qing Zheng:
    Evidence for a full energy gap in the nickel pnictide superconductor LaNiAsO1-xFx from 75As nuclear quadrupole resonance
    Phys. Rev. B, 81, 140509(R) (1-4) (2010).
    4. 　　
  4. Z. Li, Y. Ooe, X. C. Wang, Q. Q. Liu, C. Q. Jin, M. Ichioka, Guo-qing Zheng:
    75As NQR and NMR studies of superconductivity and electron correlations in iron arsenide LixFeAs
    J. Phys. Soc. Jpn. 79, 083702 (2010).
  5. S. Harada, K. Tahara, Z. Li, J.L. Luo, Y. Inada, Guo-qing Zheng:
    NMR study of superconductors Li2(Pd1-xPtx)3B and Mg10±xIr19B16+y without inversion symmetry
    Physica C 470, S678-S681 (2010).
  6. Guo-qing Zheng, K. Matano, S. Kawasaki, Z. Li, G.L. Sun, D.L. Sun, C.T. Lin, G.F. Chen, J.L. Luo, N.L. Wang, Z.A. Ren, Z.X. Zhao:
    Multiple Superconducting Gaps and Anisotropic Spin Fluctuations in Hole-Doped and Electron-Doped Iron-Pnictides: NMR Studies
    J. Supercond. Nov. Magn. 23, 609-612 (2010).
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2009年
  1. S. Kawasaki, T. Motohashi, K. Shimada, T. Ono, R. Kanno, M. Karppinen, H. Yamauchi, and Guo-qing Zheng:
    Measurement of electron correlations in LixCoO2 (x=0.0-0.35) using 59Co nuclear magnetic resonance and nuclear quadrupole resonance techniques
    Phys. Rev. B 79, 220514(R) (2009).
  2. K. Tahara, Z. Li, H. X. Yang, J. L. Luo, S. Kawasaki, and Guo-qing Zheng:
    Superconducting state in the noncentrosymmetric Mg9.3Ir19B16.7 and Mg10.5Ir19B17.1 revealed by NMR.
    Phys. Rev. B 80, 060503(R) (2009).
  3. Guo-qing Zheng, Kouta Katayama, Masahide Nishiyama, Shinji Kawasaki, Naoki Nishihagi, Shojiro Kimura, Masayuki Hagiwara, and Koichi Kindo:
    Spin-Echo NMR in Pulsed High Magnetic Fields up to 48 T
    J. Phys. Soc. Jpn 78, 095001 (2009).
    4. 　　
  4. K. Matano, G.L. Sun, D.L. Sun, C.T. Lin, M. Ichioka, and Guo-qing Zheng:
    Anisotropic spin fluctuations and multiple superconducting gaps in hole-doped Ba0.7K0.3Fe2As2: NMR in a single crystal
    Europhys. Lett. 87, 27012 (2009).
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2008年
  1. K. Matano, Z.A. Ren, X.L. Dong, L.L. Sun, Z.X. Zhao and G.-q. Zheng:
    Spin-singlet superconductivity with multiple gaps in PrO0.89F0.11FeAs
    Europhys. Lett. 83, 57001 (2008).
  2. S. Kawasaki, K. Katayama, H. Sugawara, D. Kikuchi, H. Sato, and G.-q. Zheng:
    123Sb-NQR study of unconventional superconductivity in the filled skutterudite heavy-fermion compound PrOs4Sb12 under high pressure up to 3.82 GPa
    Phys. Rev. B 78, 064510 (1-7) (2008).
  3. K. Matano, C.T. Lin, G.-q. Zheng:
    Hydration-induced anisotropic spin fluctuations in NaxCoO2*1.3H2O superconductor
    Europhys. Lett. 84 57010 (2008).
  4. S. Kawasaki, K. Shimada, G. F. Chen, J. L. Luo, N. L. Wang, and Guo-qing Zheng:
    Two superconducting gaps in LaFeAsO0.92F0.08 revealed by 75As nuclear quadrupole
    Phys. Rev. B 78, 220506(R) (2008).
  5. K. Matano, G.-Q. Zheng, D.P. Chen, C.T. Lin:
    Evidence for d-wave pairing in the cobalt oxide superconductor NaxCoO2*1.3H2O
    Physica B 403, 1107-1108 (2008).
  6. S. Kawasaki, K. Katayama, M. Nishiyama, H. Kotegawa, T. C. Kobayashi, H. Sugawara, D. Kikuchi, H. Sato, G.-q. Zheng:
    Sb-NQR study of PrOs4Sb12 under high pressure
    J. Phys. Soc. Jpn. 77, Suppl. A, pp. 330-332 (2008).
  7. M. Kandatsu, M. Nishiyama, Y. Inada, G.-q. Zheng:
    Nuclear Spin-Lattice Relaxation in Non-centrosymmetric Superconductors Li2(Pd,Pt)3B
    J. Phys. Soc. Jpn. 77 Suppl. A, pp. 348-349 (2008).
  8. S. Masaki, T. Mito, S. Wada, H. Sugawara, D. Kikuchi, H. Sato, M.Takigawa, N. Takeda and G.-q. Zheng:
    31P-NMR study in single crystal SmRu4P12
    J. Phys. Soc. Jpn. 77 Suppl. A, pp. 206-208 (2008).
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2007年
  1. S. Masaki, T. Mito, M. Takemura, S. Wada, H. Harima, D. Kikuchi, H. Sato, H. Sugawara, N. Takeda and G.-q. Zheng:
    Observation of Symmetry Lowering Associated with the Metal-Insulator Transition in SmRu4P12 by 101Ru-NQR
    J. Phys. Soc. Jpn. 76, 043714 (2007).
  2. J. Laverock and S. B. Dugdale, J. A. Duffy, J. Wooldridge, G. Balakrishnan, and M. R. Lees, G.-q. Zheng, D. Chen and C. T. Lin, A. Andrejczuk, M. Itou, and Y. Sakurai:
    Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides
    Phys. Rev. B 76, 052509 (2007).
  3. E. Kusano, S. Kawasaki, K. Matano, G. -q. Zheng, R.L. Meng, J. Cmaidalka and C.W. Chu:
    Pressure dependence of the superconducting transition and electron correlations in NaxCoO2* 1.3H2O
    Phys. Rev. B 76, 100506 (R) (2007).
  4. M. Nishiyama, Y. Inada, and Guo-qing Zheng:
    Spin triplet superconductivity due to broken inversion symmetry in Li2Pt3B
    Phys. Rev. Lett. 98, 047002 (2007).
  5. K. Katayama, S. Kawasaki, M. Nishiyama, H. Sugawara, D. Kikuchi, H. Sato and G.- q. Zheng
    Evidence for Point Nodes in the Superconducting Gap Function in the Filled Skutterudite Heavy-Fermion Compound PrOs4Sb12: 123Sb-NQR Study under Pressure
    J. Phys. Soc. Jpn. 76, 023701 (2007).
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2006年
  1. Y. Shiotani, J.L. Sarrao, and G. - q. Zheng Field-Induced Ferromagnetic Order and Colossal magnetoresistance in La1.2Sr1.8Mn2O7:　A 139La NMR Study
    Phys. Rev. Lett. 96, 057203 (2006).
  2. G. - q. Zheng, K. Matano, D. P. Chen, and C. T. Lin:
    Spin singlet pairing in the superconducting state of NaxCoO2 1.3H2O: Evidence from a 59Co Knight shift in a single crystal
    Phys. Rev. B 73, 180503 (R) (2006).
  3. G. - q. Zheng, K. Matano, R.L. Meng, J. Cmaidalka and C.W. Chu:
    Na content dependence of superconductivity and the spin correlations in NaxCoO2*1.3H2O
    J. Phys.: Condens. Matter 18, L63-L70 (2006).
  4. 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, Y. Onuki:
    115In-NQR study of antiferromagnetism and superconductivity in CeRhIn5 and CeIn3 under pressure
    J. Phys. Chem. Solids 67, 497-499 (2006).
  5. M. Nishiyama, T.Kato, H.Sugawara, D. Kikuchi, H. Sato, H. Harima, G.-q. Zheng:
    Evidence for nodes in the superconducting energy gap of the skutterudite compound PrOs4Sb12
    Physica B 378-380, 192-193 (2006).
  6. K. Matano, G.-q.Zheng, J. Cmaidalka, Y. Sun, R.L.Meng, C.W.Chu:
    Evolution of the physical properties with Na content in the cobalt oxide superconductors NaxCoO2 1.3H2O
    Physica B 378-380, 871-872 (2006).
  7. T. Mito, S. Masaki, N. Oki, S. Noguchi, S. Wada, N. Takeda, D. Kikuchi, H Sato, H. Sugawara, G.-q. Zheng
    NMR study of unique properties in SmRu4P12
    Physica B 378-380, 224-225 (2006).
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2005年
  1. M. Nishiyama, Y. Inada, and Guo-quing Zheng:
    Superconductivity of the ternary boride Li2Pd3B probed by 11B NMR
    Phys. Rev. B 71, 220505(R) (2005).
  2. G.-q. Zheng, P.L.Kuhns, A.P.Reyes, B.Liang and C.T.Lin:
    Critical point and the nature of the pseudogap of single-layered copper-oxide Bi2Sr2-xLaxCuO6 superconductors
    Phys. Rev. Lett. 94, 047006 (2005).
  3. S. Kawasaki, G.-q. Zheng, H.Kan, Y.Kitaoka, H.Shishido and Y.Onuki:
    Enhancing the Superconducting Transition Temperature of the Heavy Ferminon Compound CeIrIn5 in the Absence of Spin Correlations
    Phys. Rev. Lett. 94, 037007 (2005).
  4. M.NISHIYAMA, T.KATO, H.SUGAWARA, D.KIKUCHI, H.SATO, H.HARIMA and Guo-quing ZHENG:
    Impurity Effect as a Probe for the Gap Function in the Filled Skutterudite Compound Superconductor PrOs4Sb12: Sb-NQR Study.
    J. Phys. Soc. Jpn. 74, 1938-1941 (2005).
  5. M.Yogi, H.Kotegawa, Guo-quing Zheng, Y.Kitaoka, S.Ohsaki, H.Sugawara and H.Sato:
    Novel Phase Transition Near the Quantum Critical Point in the Filled-Skutterudite Compoind CeOs4Sb12: An Sb-NQR Study
    J. Phys. Soc. Jpn. 74, 1950-1953 (2005).
  6. H.Tou, M.Doi, M.Seta, M.Yogi, Y.Kitaoka, H.Kotegawa, G.-q. Zheng, H.Harima, H.Wugawara, H.Sato:
    121Sb-NMR Studies of single-crystal PrOs4Sb12
    Physica B 359-361, 892-894 (2005).
  7. S.Kawasaki, T.Mito, Y.Kawasaki, H.Kotegawa, G.-q. Zheng, Y.Kitaoka, H.Shishido, S.Araki, R.Settai, and Y.Onuki:
    115In-NQR study of antiferromagnetism and superconductivity near magnetic criticality in CeIn3
    Physica B 359-361, 413-415 (2005).
  8. M. Yashima, S. Kawasaki, Y. Kawasaki, G.-q. Zheng, Y. Kitaoka, H.Shishido, R.Settai, Y.Haga, Y.Onuki:
    Unconventional superconductivity near the antiferromagnetic criticality in CeCoIn5 : a study of 115In-NQR under pressure
    Physica B 359-361, 404-406 (2005).
  9. S.Kawasaki, M.Yashima, T.Mito, Y.Kawasaki, G.-q.Zheng, Y.Kitaoka, D.Aoki, Y.Haga and Y Onuki:
    The phase diagram of antiferromagnetism and superconductivity in CeRhIn5 : a study of 115In NQR under pressure
    J.Phys.: Condens. Matter 17, S889-S893 (2005).
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2004年
  1. H. Kotegawa, S. Kawasaki, A. Harada, Y. Kawasaki, K. Okamoto, G. -q. Zheng, Y.Kitaoka,
    E. Yamamoto, Y. Haga, Y. Onuki, M. K. Itoh, E. E. Haller:
    The microscopic coexistence of superconductivity and ferromagnetism in UGe2: 73Ge-NMR/NQR study
    J. Magn. Magn. Mater. 272-276, E27-E28 (2004).
  2. M. Yashima, S. Kawasaki, Y. Kawasaki, G.-q. Zheng, Y. Kitaoka, H. Shishido, R. Settai, and Y. Onuki:
    Unconventional superconductivity and antiferromagnetic spin fluctuations in the heavy fermion compound CeCoIn5: 115In-NQR study under pressure
    J. Magn. Magn. Mater. 272-276, E679-E681 (2004).
  3. M. Yogi, H. kotegawa, G.-q. Zheng, Y. Kitaoka, S. Osaki, H. Sugawara and H. Sato:
    Sb-NQR study of the "Kondo semiconductor" CrOs4Sb12
    J. Magn. Magn. Mater. 272-276, E45-E46 (2004).
  4. H. Kotegawa, Y. Kitaoka, Y. Araki Y. Tokunaga, G.-q. Zheng, K. Tokiwa, T.Watanabe, A. Iyo, H. Kito, Y. Tanaka, H. Ihara:
    Coexistence of antiferromagnetic order and superconductivity in five-layered Hg-based hight-Tc cuprates
    Physica C 408-410, 761-763 (2004).
  5. G.-q.Zheng, T. Sato, Y. Kitaoka, M. Fujita and K. Yamada:
    d-wave superconductivity develops out of the Fermi liquid ground state in electron-doped superconductor Pr0.91Ce0.09LaCuO4
    Physica C 408-410, 319-320 (2004).
  6. Saki, .KawasT.Moto, Y.Kawasaki, G.-q. Zheng, Y.Kitaoka, D.Aoki, Y.Haga, Y.Onuki :
    Magnetism and superconductivity near the quantum criticality in CeRhIn5: 115In-NQR study under pressure
    J. Mag. Mag. Mat. 272-276, e19-e20 (2004).
  7. A.V.Kornilov, V.M.Pudalov, Y.Kitaoka, K.Ishida, G.-q. Zheng, T.Mito, and J.S.Qualls :
    Microscopically inhomogeneous state at the boundary between the superconducting, antiferromagnetic, and metallic phases in quasi-one-dimensional (TMTSF)2PF6
    Phys. Rev. B 69, 224404 (2004).
  8. Y.Kawasaki, K.Ishida, S.Kawasaki, T.Mito, G.-q.Zheng, Y.Kitaoka,,C.Geibel1 and F.Steglich:
    Exotic Superconductivity in the Coexistent Phase of Antiferromagnetism and Superconductivity in CeCu2(Si0.98Ge0.02)2: A Cu-NQR Stucy under Hydrostatic Pressure
    J. Phys. Soc. Jap. 73, 194-197 (2004).
  9. T.Fujimoto, G.-q. Zheng, Y.Kitaoka, R.L.Meng, J.Cmaidalka, and C.W.Chu:
    Unconventional Superconductivity and Electron Correlations in the Cobalt Oxyhydrate Na0.35CoO2 yH2O from Nuclear Quadrupole Resonance
    Phys. Rev. Lett. 92, 07004 (1-4) (2004).
  10. H.Kotegawa, Y.Tokunaga, Y.Araki, G.-q. Zheng, Y.Kitaoka, K.Tokiwa, K.Ito, T.Watanabe,A.Iyo, Y.Tanaka, and H.Ihara:
    Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu5Oy : Cu-NMR study
    Phys. Rev. B 69, 014501 (1-6) (2004).
  11. M.Yashima, S.Kawasaki, Y.Kawasaki, G.-q. Zheng, Y.Kitaoka, YH.Shishido, R.Settai, Y.Haga, and Y.Onuki:
    Magnetic Criticality and Unconventional Superconductivity in CeCoIn5 : Stucy of 115In-Nuclear Quadrupole Resonance under Pressure
    J. Phys. Soc. Jpn. 73, 2073-2076 (2004).
  12. S.Kawasaki, T.Mito, Y.Kawasaki, H.Kotegawa, G.-q. Zheng, Y.Kitaoka, H.Shishido, S.Araki, R.Settai and Y.Onuki :
    New Superconducting and Magnetic Phases Emerge on the Magnetic Criticality in CeIn3
    J. Phys. Soc. Jpn. 73. 1647-1650 (2004).
  13. G.-q. Zheng, N.Yamaguchi, K.Tanabe,Y.Kitaoka, J.L.Sarrao and J.D.Thompson :
    NQR Evidence for the Coexistence of Unconventional Superconductivity and Antiferromagnetic order in the heavy Fermion Compunds Ce(Rh1-xIrx)In5
    Phys. Rev. B 70, 014551 (2004).
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