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原著論文リスト


2014
85. M.Soda, M. Matsumoto, M. Månsson, S. Ohira-Kawamura, K. Nakajima, R. Shiina, and T. Masuda, "Spin-Nematic Interaction in the Multiferroic Compound Ba2CoGe2O7", Phys. Rev. Lett.112, 127205 (2014).


2013
84.M. Matsumoto, M. Soda and T. Masuda, "Quantum-Phase-Transition-Induced Multiferroics and Higgs Mode in Integer Spin Systems in Noncentrosymmetric Lattice with Strong Single-Ion Anisotropy", J. Phys. Soc. Jpn. 82, 093703 (2013).
83. J. Kikuchi, S. Nagura, K. Murakami, T. Masuda, and G.J. Redhammer, "Cu-63,Cu-65 Nuclear Resonance Study of the Coupled Spin Dimers and Chains Compound Cu2Fe2Ge4O13", J. Phys. Soc. Jpn. 82, 034710 (2013).


2011
82. T. Masuda, M. Hagihala, Y. Kondoh, K. Kaneko,and N. Metoki, "Spin Density Wave in Insulating Ferromagnetic Frustrated Chain LiCuVO4", J. Phys. Soc. Jpn. 80, 113705 (2011).


2010
81. M. Matsumoto H. Kuroe, T. Sekine and T. Masuda, "Theory of magnetic excitation for coupled spin dimer and spin chain system Cu2Fe2Ge4O13 ", J. Phys. Conf. Ser. 200, 022034 (2010) .
80. J Kikuchi, S Nagura, H Nakanishi and T Masuda, "Nuclear magnetic and quadrupole resonances of Cu in the low-dimensional magnets Cu2M2Ge4O13 (M = Fe, Sc) ", J. Phys.: Conf. Ser. 200 022024 (2010).
79. T. Masuda, K. Kitaoka, S. Takamizawa, N. Metoki, K. Kaneko, K.C. Rule, K. Kiefer, H. Manaka, and H. Nojiri, "Instability of magnons in two-dimensional antiferromagnets at high magnetic fields", Phys. Rev. B 81, 100402 (2010). Selected as Editors' suggestion.
78. M. Matsumoto H. Kuroe, T. Sekine and T. Masuda, "Theory of magnetic excitation for coupled spin dimer and spin chain system Cu2Fe2Ge4O13 ", J. Phys. Conf. Ser. 200, 022034 (2010).


2009
77. T. Masuda, K. Kakurai, and A. Zheludev, “Spin dimers in the quantum ferrimagnet Cu2Fe2Ge4O13 under staggered and random magnetic field”, Phys. Rev. B 80, 180412(R) (2009).
76. T. Masuda, "Simulation of time of flight experiment in Cu2Fe2Ge4O13", Nucl. Inst. Meth. A 600, 232 (2009). (5 pages)


2008
75. T. Masuda, S. Takamizawa, K. Hirota, M. Ohba, and S. Kitagawa, "Magnetic Excitation in Artificially Designed Oxygen Molecule Magnet", J. Phys. Soc. Jpn. 77, 083703 (2008). (4 pages)
74. S. Kimura, M. Matsuda, T. Masuda, S. Hondo, K. Kaneko, N. Metoki, M. Hagiwara, T. Takeuchi, K. Okunishi, Z. He, K. Kindo, T. Taniyama, and M. Itoh, "Longitudinal Spin Density Wave Order in a Quasi-1D Ising-like Quantum Antiferromagnet ", Phys. Rev. Lett. 101, 207201 (2008).
73. T. Sekine, T. Kaneko, H. Kroe, and T. Masuda, "Raman scattering from the spin-gap mode in the Ni-doped spin-Peierls compound CuGeO3", Phys. Rev. B 78, 134409 (2008). (10 pages)


2007
72. T. Masuda, K. Kakurai, M. Matsuda, K. Kaneko, and N. Metoki, "Indirect magnetic interaction mediated by spin dimer in Cu2Fe2Ge4O13", Phys. Rev. B 75, 220401(R) (2007). (4 pages) (PDF reprint)
71. H. Manaka, Y. Miyashita, Y. Watanabe, and T. Masuda, "Synthesis of Double-Layer Perovskite Fluoride K3Cu2F7 with Spin Gap and Orbital Order ", J. Phys. Soc. Jpn. 76, 044710 (2007). (3 pages) 
70. A. Zheludev, T. Masuda, G. Dhalenne, A. Revcolevschi, C. Frost, and T. Perring, "Scaling of dynamic spin correlations in BaCu2(Si0.5Ge0.5)2O7", Phys. Rev. B 75, 054409 (2007). (5 pages)
69. V. Garlea, A. Zheludev, T. Masuda, H. Manaka, L.-P. Regnault, E. Ressouche, B. Grenier, J.-H. Chung, K. Habicht, K. Kiefer, and M. Boehm, "Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders.", Phys. Rev. Lett. 98, 167202 (2007). (4 pages)


2006
68. T. Masuda and G.J. Redhammer, "Magnetic excitation in the spin-gap compound Cu2Sc2Ge4O13: Comparison to Cu2Fe2Ge4O13", Phys. Rev. B 74, 054418 (2006).  (PDF reprint)
67. T. Masuda, A. Zheludev, H. Manaka, L.-P. Regnault, J.-H. Chung, and Y. Qiu, "Dynamics of Composite Haldane Spin Chains in IPA-CuCl3", Phys. Rev. Lett. 96, 047210 (2006). (PDF reprint)


2005
66. T. Masuda, A. Zheludev, B. Sales, S. Imai, and K. Uchinokura, "Magnetic Excitation in Cu2Fe2Ge4O13.", Prog. Theor. Phys. Suppl. 159, 96-100, (2005).
65. T. Masuda, A. Zheludev, B. Sales, S. Imai, K. Uchinokura, and S. Park, "Magnetic excitations in the weakly coupled spin dimers and chins material Cu2Fe2Ge4O13.", Phys. Rev. B 72, 094434 (2005). (8 pages) (PDF reprint)
64. T. Masuda, A. Zheludev, B. Roessli, A. Bush, M. Markina, and A. Vasiliev, "Spin waves and magnetic interactions in LiCu2O2.", Phys. Rev. B 72, 014405 (2005). (7 pages) (PDF reprint)
63. T. Masuda, A. Zheludev, A. Bush, M. Markina, and A. Vasiliev, "Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2", Phys. Rev. Lett. 94, 039706 (2005). (1 pages)


2004
62. T. Masuda, A. Zheludev, K. Uchinokura, J.-H. Chung, and S. Park, “Dynamics and Scaling in a Quantum Spin Chain Material with Bond Randomness”, Phys. Rev. Lett. 93, 077206 (2004).  (4 pages)   (PDF reprint)
61. T. Masuda, A. Zheludev, G. Grenier, S. Imai, K. Uchinokura, E. Ressouche, and S. Park, “Cooperative ordering of gapped and gapless spin networks in Cu2Fe2Ge4O13”, Phys. Rev. Lett. 93, 077202 (2004). (4 pages) (PDF reprint)
60.  A. Zheludev, T. Masuda, B. Sales, D. Mandrus, T. Papenbrock, T. BArnes, and S. Park, “Distribution of exchange energy in a bond alternating S=1 quantum spin chain”, Phys. Rev. B 69, 144417 (2004). (9 pages)
59. T. Masuda, A. Zheludev, A. Bush, M. Markina, and A Vasiliev, “Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2”, Phys. Rev. Lett. 92, 177201 (2004). (4 pages) (PDF reprint)
58. S. Bertaina, V.A. Pashchenko, A. Stepanov, T. Masuda, and K. Uchinokura, “Electron spin resonance in the spin-1/2 quasi-one-dimensional antiferromagnet with Dzyaloshinskii-Moriya interaction BaCu2Ge2O7”, Phys. Rev. Lett. 92, 57203 (2004). (4 pages)


2003
57. T. Masuda, B. C. Chakoumakos, C. L. Nygren, S. Imai, and K. Uchinokura, “A novel germanate, Cu2Fe2Ge4O13, with a four tetrahedral oligomer”, J. Solid State Chem. 176, 175-179 (2003).
56. A. Zheludev, T. Sato, T. Masuda, K. Uchinokura, and G. Shirane, “Spin waves and the origin of commensurate magnetism in Ba2CoGe2O7”, Phys. Rev. B 68, 24428 (2003). (5 pages)
55. A.I. Smirnov, V.N. Glazkov, T. Masuda, K. Uchinokura, L.N. Demianets, A.Y. Shapiro AY, “Microscopic magnetic phase separation at the impurity stimulated antiferromagnetic ordering of two spin-gap magnets”, Physica B, 329, 699-700 (2003).
54. Y. Tanokura, Y. Oono, H. Kuroe, T. Sekine, T. Masuda, K. Uchinokura, “Raman-scattering study on the revival of the spin-Peierls transition in heavily Mg-doped CuGeO3 under high pressures”, Physica B 329, 882-883 (2003).
53. I. Tsukada, J. Takeya, T. Masuda, K. Uchinokura, A. Zheludev, “Anomalous two-stage spin-flop transition in BaCu2Si2O7”, Physica B 329, 886-887 (2003).
52. T. Sato, T. Masuda, K. Uchinokura, “Magnetic property of Ba2CoGe2O7”, Physica B 329, 880 (2003).
51. Y. Tanokura, Y. Oono, S. Ikeda, H. Kuroe, T. Sekine, T. Masuda, K. Uchinokura, “Raman-scattering study of the anomalous spin-Peierls state in heavily Mg-doped CuGeO3 under pressure”, Phys. Rev. B 68, 054412 (2003). (10 pages)
50. Y.J. Wang, Y.J. Kim, R.J. Christianson, S.C. LaMarra, F.C. Chou, T. Masuda, I. Tsukada, K. Uchinokura, R.J. Birgeneau, “X-ray scattering and magnetic susceptibility study of doped CuGeO3”, J. Phys. Soc. Jpn. 72, 1544-1553 (2003).
49. T. Masuda, A. Zheludev, H. Kageyama, and A. N. Vasiliev, “BiCu2VO6: a new narrow-band spin-gap material”, Europhysics Letters, 63, 757-763 (2003).
48. A. Zheludev, S. Raymond, L. P. Regnault, F. H. L. Essler, K. Kakurai, T. Masuda, and K. Uchinokura, “Polarization dependence of spin excitations in BaCu2Si2O7”, Phys. Rev. B 67, 134406 (2003). (10 pages)
47. T. Masuda, D. Yano, K. Uchinokura, H. Kuroe, T. Sekine, Y. Katsuki, K. Ohwada, Y. Fujii, H. Nakao, and Y. Murakami, “Appearance of the spin-Peierls phase under pressure in Cu1-xMgxGeO3”, Phys. Rev. B 67, 024423 (2003). (6 pages) (PDF reprint)


2002
46. R. Hayn, V. A. Pashchenko, A. Stepanov, T. Masuda, and K. Uchinokura, “Magnetic anisotropy of BaCu2Si2O7: Theory and antiferromagnetic resonance”, Phys. Rev. B 66, 184414 (2002). (5 pages)
45. R. J. Crhistianson, Y. J. Wang, S. C. LaMarra, R. J. Birgeneau, V. Kiryukhin, T. Masuda, I. Tsukada, K. Uchinokura, and B. Keimer, “X-ray scattering study of the incommensurate phase in Mg-doped CuGeO3”, Phys. Rev. B 66, 174105 (2002). (9 pages)
44. T. Masuda, K. Uchinokura, T. Hayashi, N. Miura, “Impurity-induced antiferromagnetic phase in a doped Haldane system Pb(Ni1-xMgx)2V2O8”, Phys. Rev. B 66, 174416 (2002). (7 pages) (PDF reprint)
43. T. Masuda, K. Sakaguchi, and K. Uchinokura, “Magnetism of a new spin-1 material NaV(WO4)2”, J. Phys. Soc. Jpn. 71, 2637-2639 (2002). (PDF reprint)
42. A. Zheludev, K. Kakurai, T. Masuda, K. Uchinokura, and K. Nakajima, “Dominance of the excitation continuum in the longitudinal spectrum of weakly coupled Heisenberg S=1/2 chains”, Phys. Rev. Lett. 89, 197205 (2002). (4 pages)
41. T. Masuda, N. Koide, and K. Uchinokura, “Impurity effect study in spin-Peierls compound CuGeO3”, Prog. Theor. Phys. Suppl. 145, 306-311 (2002).
40. Y. Itoh, T. Machi, N. Koshizuka, T. Masuda, and K. Uchinokura, “Cu nuclear quadrupole resonance study of the spin-Peierls compound Cu1-xMgxGeO3: A possibility of precursory dimerization”, Phys. Rev. B 65, 100406R (2002). (4 pages)
39. A. Zheludev, E. Ressouche, I. Tsukada, T. Masuda, and K. Uchinokura, “Structure of multiple spin-flop states in BaCu2Si2O7”, Phys. Rev. B 65, 174416 (2002). (6 pages)
38. Y. Fudamoto, I.M. Gat, M.I. Larkin, J. Merrin, B. Nachumi, A.T. Savici, Y. J. Uemura, G. M. Lake, K. M. Kojima, M. Hase, T. Masuda, and K. Uchinokura, “Muon spin relaxation in the spin-ring system Cu3WO6: Quasistatic spin freezing at 7.0 K”, Phys. Rev. B 65 174428 (2002). (10 pages)  
37. VN Glazkov, AI Smirnov, K. Uchinokura, T. Masuda, “Separation of the magnetic phases at the Neel point in the diluted spin-Peierls magnet CuGeO3”, Phys. Rev. B 65, 144427 (2002). (7 pages)
36. A. Zheludev, M. Kenzelmann, S. Raymond, T. Masuda, K. Uchinokura, SH Lee, “Spin dynamics in the quasi-one-dimensional S=1/2 antiferromagnet BaCu2Si2O7”, Phys. Rev. B 65, 4402 (2002). (9 pages)


2001
35. T. Masuda, R. Kuroda, and K. Uchinokura,  "Pressure effect of spin-Peierls material CuGeO3", J. Mag. Mag. Mater. 226-230, 425-426, (2001).
34. A. Zheludev A, T. Masuda, K. Uchinokura, and SE Nagler,“Zone-boundary excitations in coupled Haldane spin chain compounds PbNi2V2O8 and SrNi2V2O8”, Phys. Rev. B 64, 134415 (2001). (7 pages) (PDF reprint)
33. K. Uchinokura and T. Masuda, “Impurity-induced antiferromagnetic phase in a new Haldane-gap compound PbNi2V2O8”, J. Mag. Mag. Mater. 226-230, 431-433, (2001).
32. K. Takehana, T. Takamasu, M. Hase, G. Kido, T. Masuda, and K. Uchinokura, "Spin-phonon coupled modes in the incommensurate phases of doped CnGeO3", Phys. Rev. B 63, 245413 (2001).  (6 pages)
31. J. Takeya, I. Tsukada, Y. Ando, T. Masuda, K. Uchinokura, I. Tanaka, RS. Feigelson, and A. Kapitulnik,  "Thermal conductivity of pure and Mg-doped CuGeO3 in the incommensurate phase", Phys. Rev. B 63, 214407 (2001).  (6 pages)
30. F. Semadeni, A. Amato, B. Roessli, P. Boni, C. Baines, T. Masuda, K. Uchinokura, and G. Shirane,  "Macroscopic and local magnetic moments in Si-doped CuGeO3 as determined by neutron and μSR studies", Euro. Phys. J. B21, 307-311 (2001).
29. Tomoyuki Sekine, Ayako Uji, Yoshiyuki Oono, Yoshiko Tanokura, Takatsugu Masuda and Kunimitsu Uchinokura,  "Raman-scattering study of doping effects on the structural phase transition under hydrostatic pressure in CuGeO3", J. Phys. Soc. Jpn. 70, 290-296 (2001).
28. I. Tsukada, J. Takeya, T. Masuda, and K. Uchinokura, "Two-stage spin-flop transitions in the S=1/2 antiferromagnetic spin chain BaCu2Si2O7", Phys. Rev. Lett. 87, 127203 (2001). (4 pages)
27. M. Kenzelmann, A. Zheludev, S. Raymond, E. Ressouche, T. Masuda, P. Boni, K. Kakurai, I. Tsukada, K. Uchinokura, and R. Coldea, "Spin waves and magnetic ordering in the quasi-one-dimensional S=1/2 antiferromagnet BaCu2Si2O7", Phys Rev. B 64, 54422 (2001). (7 pages)


2000
26. T. Masuda, I. Tsukada, K. Uchinokura, Y. J. Wang, V. Kiryukhin, and R. J. Birgeneau, "First-order phase transition between dimerized-antiferromagnetic and uniform-antiferromagnetic phases in Cu1-xMxGeO3", Phys. Rev. B 61, 4103-4108 (2000).  (PDF reprint)

25. PM Gehring, SH Lee, K. Hirota, T. Masuda, K. Uchinokura, M. Hase, and G. Shirane, “Cold neutron inelastic scattering measurements of the spin-Peierls and antiferromagnetic excitations in Si-doped CuGeO3 single crystals”, J. Phys. Soc. Jpn 69, 592-597 (2000).

24. T. Masuda , K. Ina , K. Hadama , I. Tsukada , K. Uchinokura , H. Nakao , M. Nishi ,Y. Fujii , K. Hirota, G. Shirane , Y. J. Wang , V. Kiryukhin , R. J. Birgeneau, "Temperature vs concentration phase diagram of Mg- and Si-doped CuGeO3", Physica B 284, 1637-1638 (2000). 
23. J. Takeya, I. Tsukada, Y. Ando, T. Masuda, and K. Uchinokura,  "Thermal conductivity of Mg-doped CuGeO3 at very low temperature: Heat conduction by antiferromagnetic magnons", Phys. Rev. B 62, R9260-R9263 (2000). 
22. J. Takeya, I. Tsukada, Yoichi Ando, T. Masuda and K. Uchinokura, "Thermal conductivity of Mg-doped CuGeO3", Phys. Rev. B 61, 9527-9531 (2000). 
21. K.M. Kojima, Y. Fudamoto, I.M. Gat, M.I. Larkin, G.M. Luke, Y.J. Uemura, T. Masuda and K. Uchinokura, "Magnetic order of the disturbed spin-Peierls compound (Cu,Mg)GeO3", Physica B 289, 149-152 (2000). 
20. V. Kiryukhin, Y. J. Wang, S. C. LaMarra, R. J. Birgeneau, T. Masuda, I. Tsukada, and K. Uchinokura, "Reentrant spin-Peierls transition in Mg-doped CuGeO3", Phys. Rev. B 61, 9527-9531 (2000). 
19. M. Nishi, H. Nakao, Y. Fujii, T. Masuda, K. Uchinokura, and G. Shirane, "Critical neutron scattering study of the compositional phase transition in Mg-doped CuGeO3", J. Phys. Soc. Jpn. 69, 3186-3188 (2000). 
18. K. Uchinokura and T. Masuda,  "Impurity-Induced Antiferromagnetic Phase in Quasi-One-Dimensional Spin-Gap System with S = 1/2 and S = 1 Spins.", J. Phys. Soc. Jpn. 69 Suppl. A. 287-296 (2000).

17. A. Zheludev, M. Kenzelmann, S. Raymond, E. Ressouche, T. Masuda, K. Kakurai, S. Maslov, I. Tsukada, K. Uchinokura, and A. Wildes, "Energy separation of single-particle and continuum states in an S = 1/2 weakly coupled chains antiferromagnet", Phys. Rev. Lett. 85, 4799-4802 (2000).

16. A. Zheludev, T. Masuda, I. Tsukada, Y. Uchiyama, K. Uchinokura, P. Böni, and S.-H. Lee, "Magnetic excitation in coupled Haldane spin chains near the quantum critical point", Phys. Rev. B 62, 8291-8930 (2000).  (PDF reprint)
15. I. Tsukada, J. Takeya, T. Masuda, and K. Uchinokura, "Weak ferromagnetism of quasi-one-dimensional S=1/2 antiferromagnet BaCu2Ge2O7", Phys. Rev. B 62, R6061-R6064 (2000). 
14 K. Uchinokura, Y. Uchiyama, T. Masuda, Y. Sasago, I. Tsukada, A. Zheludev, T. Hayashi, N. Miura and P. Böni, "Phase diagram of spin-vacancy-induced antiferromagnetism in a new Haldane compound PbNiV2O8", Physica B 284, 1641-1642 (2000).
13. H. Kuroe, T. Kaneko, T. Sekine, Roland V. Sarmago, N. Koide, T. Masuda, I. Tsukada and K. Uchinokura, "Raman and luminescence spectra in the spin-Peierls system Cu1-xNixGeO3 ", Physica B 284, 1643-1644 (2000).
12. J. Takeya, Yoichi Ando, T. Masuda, I. Tsukada, K. Uchinokura and A. Kapitulnik, "Thermal conductivity of Mg-doped CuGeO3", Physica B 284, 1645-1646 (2000).


1999
11. J. P. Hill, C. C. Cao, M. Von Zimmermann, K. Hamalainen, S. Huotari, L. E. Berman, W. A. L. Caliebe, K. Hirota, M. Matsubara, A. Kotani, J. L. Peng, R. L. Greene, I. Tsukada, T. Masuda, and K. Uchinokura, “Resonant onelastic x-ray scattering from strongly correlated copper oxides”, J. J. Appl. Phys. 38 suppl. 38-1, 118-121 (1999).
10. H. Kuroe, J. Sasaki, T. Sekine, T. Masuda, N. Koide, I. Tsukada and K. Uchinokura,  "Folded phonon mode observed by Raman scattering in Zn- and Si-doped CuGeO3", J. Phys. Soc. Jpn. 68, 2046-2056 (1999). 
9. H. Kuroe, H. Seto, T. Sekine, T. Masuda, I. Tsukada and K. Uchinokura,  "Raman scattering in Zn- Si- and Mg-doped CuGeO3", Physica B 263, 825-828 (1999). 
8. Y. J. Wang, V. Kiryukhin, R. Birgeneau, T. Masuda, I. Tsukada, and K. Uchinokura, "Structual critical scattering study of Mg-doped CuGeO3", Phys. Rev. Lett. 83, 1676 (1999).
7. H. Nakao, M. Nishi, Y. Fujii, T. Masuda, I. Tsukada, K. Uchinokura, K. Hirota, and G. Shirane, "Neutron scattering study of temperature-concentration phase diagram of (Cu1-xMgx)GeO3", J. Phys. Soc. Jpn 68, 3662-3667 (1999). 
6. H. Nakao, M. Nishi, Y. Fujii, T. Masuda, I. Tsukada, K. Uchinokura, K. Hirota and G. Shirane, "Neutron scattering study of doped spin-Peierls compound (Cu1-xMgx)GeO3", J. Phys. Chem. Solids 60, 1117-1119 (1999). 
5. A. Zheludev, S. Maslov, G. Shirane, I. Tsukada, T. Masuda, K. Uchinokura, I. Zaliznyak, R. Erwin, and L. P. Regnault,  "Magnetic anisotropy and low-energy spin waves in the Dzyaloshinskii-Moriya spiral magnet Ba2CuGe2O7", Phys. Rev. 59, 11432-11444 (1999). 


1998
4. T. Masuda, A. Fujioka, Y. Uchiyama, I. Tsukada, and K. Uchinokura, "Phase transition between dimerized-antiferromagnetic and uniform-antiferromagnetic phases in the impurity-doped spin-Peierls cuprate CuGeO3", Phys. Rev. Lett. 80, 4566-4569 (1998). (PDF reprint)
3. K. Hirota, M. Hase, J. Akimitsu, T. Masuda, K. Uchinokura, and G. Shirane, "Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3", J. Phys. Soc. Jpn. 67, 645 (1998).
2. A. Zheludev, S. Maslov, I. Tsukada, I. Zaliznyak, L. P. Regnault, T. Masuda, K. Uchinokura, R. Erwin, and G. Shirane, "Experimental evidence for Shekhtman-Entin-Wohlman-Aharony (SEA) interaction in Ba2CuGe2O7.", Phys. Rev. Lett. 81 5410-5413 (1998).


1996
1.  N. Koide, Y. Sasago, T. Masuda, and K. Uchinokura, "Antiferromagnetic phase in Zn- and Ni-doped CuGeO3", Czech. J. Phys. 46, S4, 1981-1982 (1996).