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    	| 2025/2024/2023/2022/2021/2020/2019/2018/2017/2016/2015–2011/2010–2006/2005–2001/superconductors | 
	
    	| superconductors | 
	
    	| 2015/2009/2008/2007/2006/2005/2004/2003 | 
	
    	| 2006 | 
    
    	| Journal Articles | 
        
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             	• Yoshihiko Ihara∗, Hideo Takeya, Kenji Ishida, Hiroaki Ikeda, Chishiro Michioka, Kazuyoshi Yoshimura, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, and Eiji Takayama‑MuromachiUnconventional Superconductivity Induced by Quantum Critical Fluctuations in Hydrate Cobaltate Nax(H3O)zCoO2·yH2O —Relationship between Magnetic Fluctuations and Superconductivity Revealed by Co Nuclear Quadrupole Resonance—J. Phys. Soc. Jpn., 2006, 75 (12), Art. No. 124714DOI:10.1143/JPSJ.75.124714(11 Dec., 2006) | 
	    
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             	• Hiroya Sakurai∗, Kazunori Takada, Takayoshi Sasaki, and Eiji Takayama‑MuromachiSuperconducting Phase Diagram of NaxCoO2·yH2OPhysica C, 2006, 445-448, pp. 31‑34DOI:10.1016/j.physc.2006.03.071(1 Oct., 2006) Proceedings of the 18th International Symposium on Superconductivity: ISS 2005 | 
        
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             	• Hiroya Sakurai∗, Naohito Tsujii, Osamu Suzuki, Hideaki Kitazawa, Giyuu Kido, Kazunori Takada, Takayoshi Sasaki, and Eiji Takayama‑MuromachiValence and Na Content Dependences of Superconductivity in NaxCoO2·yH2OPhys. Rev. B, 2006, 74 (9), Art. No. 092502DOI:10.1103/PhysRevB.74.092502(12 Sep., 2006) | 
	    
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           	   • Kenji Ishida∗, Yoshihiko Ihara, Hideo Takeya, Chishiro Michioka, Kazuyoshi Yoshimura, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, and Eiji Takayama‑MuromachiPhase Diagram in Bilayered-Hydrate NaxCoO2·yH2O Revealed by Co Nuclear Quadrupole ResonancePhysica B, 2006, 378‑380, pp. 869‑870DOI:10.1016/j.physb.2006.01.482(1 May, 2006) Proceedings of the International Conference on Strongly Correlated Electron Systems: SCES 2005 | 
        
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             	• Chia‑Pin Sun, Jiunn‑Yuan Lin, Yu‑Ching Kang, Chien‑Lung Huang, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, Eiji Takayama‑Muromachi, and Hung‑Duen Yang∗Various Analyses of Specific Heat for the Order Parameter of Superconductor Na0.35CoO2·1.3H2OPhysica B, 2006, 378‑380, pp. 865‑866DOI:10.1016/j.physb.2006.01.445(1 May, 2006) Proceedings of the International Conference on Strongly Correlated Electron Systems: SCES 2005 | 
        
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             	• Hiroto Ohta∗, Chishiro Michioka, Yutaka Itoh, Kazuyoshi Yoshimura, Hiroya Sakurai, Eiji Takayama‑Muromachi, Kazunori Takada, and Takayoshi Sasaki23Na‑NMR Study of Layered Superconductor NaxCoO2·yH2OPhysica B, 2006, 378‑380, pp. 859‑860DOI:10.1016/j.physb.2006.01.317(1 May, 2006) Proceedings of the International Conference on Strongly Correlated Electron Systems: SCES 2005 | 
        
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             	• Chishiro Michioka∗, Hiroto Ohta, Yutaka Itoh, Kazuyoshi Yoshimura, Masaki Kato, Hiroya Sakurai, Eiji Takayama‑Muromachi, Kazunori Takada, and Takayoshi SasakiKnight Shift of Triangular Lattice Superconductor Na0.35CoO2·1.3H2OPhysica B, 2006, 378‑380, pp. 628‑629DOI:10.1016/j.physb.2006.01.181(1 May, 2006) Proceedings of the International Conference on Strongly Correlated Electron Systems: SCES 2005 | 
	    
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             	• Wataru Higemoto∗, Kazuki Ohishi, Akihiro Koda, Ryosuke Kadono, Hiroya Sakurai, Kazunori Takada, Eiji Takayama‑Muromachi, and Takayoshi SasakiPossible Unconventional Superconductivity and Weak Magnetism in NaxCoO2·yH2O Probed by µSRPhysica B, 2006, 374‑375, pp. 274‑277DOI:10.1016/j.physb.2005.11.083(31 Mar., 2006) Proceedings of the 10th International Conference on Muon Spin Rotation, Relaxation and Resonance | 
	    
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           	   • Yoshihiko Ihara∗, Kenji Ishida∗, Hideo Takeya, Chishiro Michioka, Masaki Kato, Yutaka Itoh, Kazuyoshi Yoshimura, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, and Eiji Takayama‑MuromachiAnisotropic Behavior of Knight Shift in Superconducting State of NaxCoO2·yH2OJ. Phys. Soc. Jpn., 2006, 75 (1), Art. No. 013708DOI:10.1143/JPSJ.75.013708(10 Jan., 2006) | 
        
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             	• Takahiro Shimojima∗, Takayoshi Yokoya, Takayuki Kiss, Ashish Chainani, Shik Shin, Tadashi Togoshi, Chengqian Zhang, Chuangtian Chen, Shuntaro Watanabe, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, and Eiji Takayama‑MuromachiLaser-excited Ultrahigh-resolution Photoemission Spectroscopy of Superconducting Na0.35CoO2·1.3H2OJ. Phys. Chem. Solids, 2006, 67 (1‑3), pp. 282‑285DOI:10.1016/j.jpcs.2005.10.124(Jan.‑Mar., 2006) Proceedings of the 7th International Conference on Spectroscopies in Novel Superconductors: SNS2004 | 
        
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            	• Masaki Kato∗, Chishiro Michioka, Takeshi Waki, Yutaka Itoh, Kazuyoshi Yoshimura, Kenji Ishida, Hiroya Sakurai, Eiji Takayama‑Muromachi, Kazunori Takada, and Takayoshi SasakiPossible Spin Triplet Superconductivity in NaxCoO2·yH2O—59Co NMR StudiesJ. Phys.: Condens. Matter, 2006, 18 (2), pp. 669‑682DOI:10.1088/0953-8984/18/2/022(14 Dec., 2005) | 
	
    	| Patent Application | 
        
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				• Kazunori Takada, Hiroya Sakurai, Eiji Muromachi, and Takayoshi SasakiSodium Cobalt Oxide HydrateUS 2006/0257311 A1National Institute for Materials Science[Google Patent Search (US20060257311)](16 Nov., 2006) |