Ayako Yamamoto

Article

Preparation, Structure, and Properties of the Bis(μ-acetato)(μ-oxo)Ruthenium(III) Dimers [Ru₂(μ-CH₃COO)₂(μ-O)(py)₆]²⁺ and [Ru₂(μ-CH₃COO)₂(μ-O)(bpy)₂(py)₂]²⁺

Sasaki, Y., Suzuki, M., Yamaguchi, T., Kabuto, C., Ochi, T., Ito, T., Nagasawa, A., Tokiwa, A. & Ebihara, M., 1991 12月 1, In: Inorganic Chemistry. 30, 26, p. 4903-4908 6 p.

研究成果: Article › 査読

67 被引用数 (Scopus)

Pressure effect on critical temperature of HgBa₂CaCu₂O_6+δ

Kosuge, M., Tokiwa-Yamamoto, A., Yamauchi, H. & Koshizuka, N., 1994 5月 20, In: Physica C: Superconductivity and its applications. 225, 3-4, p. 218-221 4 p.

研究成果: Article › 査読

8 被引用数 (Scopus)

Pressure-induced transition from a correlated insulator to a fermi liquid observed in geometrically frustrated Hg ₂Ru ₂O ₇ pyrochlore

Takeshita, N., Terakura, C., Tokura, Y., Yamamoto, A. & Takagi, H., 2007 6月 1, In: Journal of the Physical Society of Japan. 76, 6, 063707.

研究成果: Article › 査読

11 被引用数 (Scopus)

Proper composition for superconductivity in Pb(Ba, Sr)₂(Y, Ca)Cu₃O₇

Tokiwa, A., Nagoshi, M. & Syono, Y., 1990 10月 1, In: Physica C: Superconductivity and its applications. 170, 5-6, p. 437-442 6 p.

研究成果: Article › 査読

13 被引用数 (Scopus)

Quantifying covalency and metallicity in correlated compounds undergoing metal-insulator transitions

Chainani, A., Yamamoto, A., Matsunami, M., Eguchi, R., Taguchi, M., Takata, Y., Takagi, H., Shin, S., Nishino, Y., Yabashi, M., Tamasaku, K. & Ishikawa, T., 2013 1月 9, In: Physical Review B - Condensed Matter and Materials Physics. 87, 4, 045108.

研究成果: Article › 査読

4 被引用数 (Scopus)

Raman scattering measurement of the superconducting gap character in MgB₂ single crystals

Quilty, J. W., Lee, S., Yamamoto, A. & Tajima, S., 2002 10月 1, In: Physica C: Superconductivity and its applications. 378-381, PART 1, p. 38-42 5 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Raman spectra of YBa₂Cu₃O_x (x=6-7)

Morioka, Y., Tokiwa, A., Kikuchi, M., Syono, Y. & Nagase, K., 1989 6月, In: Solid State Communications. 70, 12, p. 1127-1129 3 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Raman spectra of YBa₂Cu_3-xM_xO_y(M=Co, Ni) superconductors

Morioka, Y., Tokiwa, A., Kikuchi, M. & Syono, Y., 1988 7月, In: Solid State Communications. 67, 3, p. 267-269 3 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

S= 12 quantum critical spin ladders produced by orbital ordering in Ba2CuTeO6

Gibbs, A. S., Yamamoto, A., Yaresko, A. N., Knight, K. S., Yasuoka, H., Majumder, M., Baenitz, M., Saines, P. J., Hester, J. R., Hashizume, D., Kondo, A., Kindo, K. & Takagi, H., 2017 3月 21, In: Physical Review B. 95, 10, 104428.

研究成果: Article › 査読

10 被引用数 (Scopus)

Shock-induced superconductivity of Tl₂Ba₂CuO ₆

Kikuchi, M., Syono, Y., Kobayashi, N., Oku, T., Aoyagi, E., Hiraga, K., Kusaba, K., Atou, T., Tokiwa, A., Fukuoka, K. & Nakajima, S., 1990, In: Applied Physics Letters. 57, 8, p. 813-815 3 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Shock-loading effects on superconductivity of HgBa₂CuO_y

Tokiwa-Yamamoto, A., Adachi, S., Kikuchi, M., Fukuoka, A., Tanabe, K. & Syono, Y., 1997 11月 15, In: Physica C: Superconductivity and its applications. 291, 1-2, p. 90-96 7 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Single crystals of MgB₂ superconductor grown under high-pressure in Mg-B-N system

Lee, S., Yamamoto, A., Mori, H., Eltsev, Y., Masui, T. & Tajima, S., 2002 10月 1, In: Physica C: Superconductivity and its applications. 378-381, PART 1, p. 33-37 5 p.

研究成果: Article › 査読

14 被引用数 (Scopus)

Softening of Cu-O bond stretching phonons in tetragonal HgBa ₂CuO_4+δ

Uchiyama, H., Baron, A. Q. R., Tsutsui, S., Tanaka, Y., Hu, W. Z., Yamamoto, A., Tajima, S. & Endoh, Y., 2004 5月 14, In: Physical Review Letters. 92, 19, p. 197005-1-197005-4 197005.

研究成果: Article › 査読

74 被引用数 (Scopus)

Specific heat of YBa₂Cu₃O_7-δ and BaCuO_2+x in magnetic fields up to 6 T

Sasaki, T., Nakatsu, O., Kobayashi, N., Tokiwa, A., Kikuchi, M., Liu, A., Hiraga, K., Syono, Y. & Muto, Y., 1988 10月 1, In: Physica C: Superconductivity and its applications. 156, 3, p. 395-404 10 p.

研究成果: Article › 査読

28 被引用数 (Scopus)

Specific heat of YBa₂Cu₃O_7-δ in magnetic fields up to 6T

Sasaki, T., Kobayashi, N., Nakatsu, O., Matsuhira, T., Tokiwa, A., Kikuchi, M., Syono, Y. & Muto, Y., 1988, In: Physica C: Superconductivity and its applications. 153-155, PART 2, p. 1012-1013 2 p.

研究成果: Article › 査読

15 被引用数 (Scopus)

Strong coupling superconductivity at 8.4 K in an antiperovskite phosphide SrPt ₃P

Takayama, T., Kuwano, K., Hirai, D., Katsura, Y., Yamamoto, A. & Takagi, H., 2012 6月 8, In: Physical Review Letters. 108, 23, 237001.

研究成果: Article › 査読

72 被引用数 (Scopus)

Structural and superconducting properties of (Hg_{1 - X}Tl_x)₂Ba₂Ca_n-1Cu _nO_y (n = 3, 4) superconductors prepared under high pressure

Tatsuki, T., Tokiwa-Yamamoto, A., Tamura, T., Wu, X. J., Moriwaki, Y., Adachi, S. & Tanabe, K., 1996 12月 15, In: Physica C: Superconductivity and its applications. 273, 1-2, p. 65-71 7 p.

研究成果: Article › 査読

8 被引用数 (Scopus)

Structural changes of PbBaSr(Y_0.8Ca_0.2)Cu₃O_7+z on oxygen introduction into block layers

Ishigaki, T., Tokiwa-Yamamoto, A., Izumi, F., Kamiyama, T., Asano, H. & Syono, Y., 1994 10月 1, In: Physica C: Superconductivity and its applications. 231, 3-4, p. 357-366 10 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Structural study on the (Hg,Tl)-Ba-(Ca,Y)-Cu-O system by XRD and TEM

Wu, X. J., Tokiwa-Yamamoto, A., Tatsuki, T., Adachi, S. & Tanabe, K., 1997 8月, In: Physica C: Superconductivity and its applications. 282-287, PART 2, p. 889-890 2 p.

研究成果: Article › 査読

STRUCTURE AND VIBRATIONAL-SPECTRA OF TRINUCLEAR METAL CLUSTER COMPLEXES - A QUESTION OF SYMMETRY

Yamamoto, A., Ohto, A. & Abe, M., 1995, In: Chemistry Letters Issue.

研究成果: Article › 査読

Structure evolution in superconducting (Hg_0.7,Tl_0.3)₂Ba₂(Ca _x,Y_1-x)Cu₂O_8-2δ

Wu, X. J., Tokiwa-Yamamoto, A., Tatsuki, T., Adachi, S. & Tanabe, K., 1997 1月 1, In: Physica C: Superconductivity and its applications. 273, 3-4, p. 198-204 7 p.

研究成果: Article › 査読

9 被引用数 (Scopus)

Study of structural variation caused by Ar annealing for (Hg_0.7,Tl_0.3)₂Ba₂(Ca_0.2,Y_0.8)Cu₂O_y

Wu, X. J., Tokiwa-Yamamoto, A., Tatsuki, T., Adachi, S. & Tanabe, K., 1999 3月 20, In: Physica C: Superconductivity and its applications. 314, 3, p. 219-227 9 p.

研究成果: Article › 査読

6 被引用数 (Scopus)

Substitution of methanol-d₄ for the coordinated water in the trinuclear complexes, [M₃(μ₃-O)(μ-CH₃COO)₆(H₂O)₃]⁺ (M₃=Ru₃, Rh₃ or Ru₂Rh) in methanol-d₄

Sasaki, Y., Nagasawa, A., Tokiwa-Yamamoto, A. & Ito, T., 1993 10月, In: Inorganica Chimica Acta. 212, 1-2, p. 175-182 8 p.

研究成果: Article › 査読

40 被引用数 (Scopus)

Superconducting and structural properties of nearly carbonate-free HgBa₂CuO_4+δ

Yamamoto, A., Hu, W. Z., Izumi, F. & Tajima, S., 2001 4月 15, In: Physica C: Superconductivity and its applications. 351, 4, p. 329-340 12 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

Superconducting Gap in [Formula presented]: Electronic Raman Scattering Measurements of Single Crystals

Quilty, J. W., Lee, S., Yamamoto, A. & Tajima, S., 2002, In: Physical Review Letters. 88, 8, p. 4 1 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Superconducting gap in MgB₂: Electronic raman scattering measurements of single crystals

Quilty, J. W., Lee, S., Yamamoto, A. & Tajima, S., 2002 2月 25, In: Physical Review Letters. 88, 8, p. 087001/1-087001/4 087001.

研究成果: Article › 査読

130 被引用数 (Scopus)

Superconducting Phase at 7.7 K in the Hg_xReO₃ Compound with a Hexagonal Bronze Structure

Ohgushi, K., Yamamoto, A., Kiuchi, Y., Ganguli, C., Matsubayashi, K., Uwatoko, Y. & Takagi, H., 2011 1月 4, In: Physical Review Letters. 106, 1, 017001.

研究成果: Article › 査読

8 被引用数 (Scopus)

Superconducting properties of homologous layered cuprates synthesized under high pressure

Tanabe, K., Tatsuki, T., Tokiwa-Yamamoto, A., Tamura, T., Wu, X. J. & Adachi, S., 1997 8月, In: Physica C: Superconductivity and its applications. 282-287, PART 1, p. 45-48 4 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

Superconducting properties of the high-T_c oxide compounds

Kobayashi, N., Nakatsu, O., Terada, S., Sasaoka, T., Sasaki, T., Furuyama, M., Noto, K., Kikichi, M., Tokiwa, A., Oh-Ishi, K., Syono, Y. & Muto, Y., 1987 12月, In: Physica B+C. 148, 1-3, p. 469-471 3 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Superconductivity and crystal structure of Pb(Ba,Sr)₂(Ln,Ca)Cu₃O_y and Pb(Ba,Sr)₂(Ln,Ce)₂Cu₃O_y(Ln: lanthanoid) with (Pb,Cu) double layers

Tokiwa, A., Syono, Y., Oku, T. & Nagoshi, M., 1991 12月 1, In: Physica C: Superconductivity and its applications. 185-189, PART 1, p. 619-620 2 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Superconductivity at 10.2 K in the K-Bi-O system

Khasanova, N. R., Yamamoto, A., Tajima, S., Wu, X. J. & Tanabe, K., 1998 9月 1, In: Physica C: Superconductivity and its applications. 305, 3-4, p. 275-280 6 p.

研究成果: Article › 査読

39 被引用数 (Scopus)

Superconductivity at 75 K in Hg-1222 cuprates: (Hg,M)Sr₂(Ln,Ce)₂Cu₂O_z (M = Ti, V, Cr, Mo, W, Re; Ln = Sm-Er)

Kandyel, E., Yamamoto, A. & Tajima, S., 2000, In: Physica C: Superconductivity and its applications. 341-348, PART 1, p. 429-432 4 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Superconductivity in 4d and 5d transition metal layered pnictides BaRh ₂P₂, BaIr₂P₂ and SrIr ₂As₂

Hirai, D., Takayama, T., Hashizume, D., Higashinaka, R., Yamamoto, A., Hiroko, A. K. & Takagi, H., 2010 12月, In: Physica C: Superconductivity and its applications. 470, SUPPL.1, p. S296-S297

研究成果: Article › 査読

Open Access

23 被引用数 (Scopus)

Superconductivity of (Hg_0.7Tl_0.3)₂Ba₂Y _1-xCa_xCu₂O_8-δ (0 ≦ x ≦ 0.8) with a wide range of doping state

Tokiwa-Yamamoto, A., Tatsuki, T., Adachi, S. & Tanabe, K., 1996 9月 10, In: Physica C: Superconductivity and its applications. 268, 3-4, p. 191-196 6 p.

研究成果: Article › 査読

19 被引用数 (Scopus)

Synthesis and characterization of perovskite-type CaPbO₃

Yamamoto, A., Khasanova, N., Wu, X. J. & Tanabe, K., 1998 5月 1, In: Solid State Ionics. 108, 1-4, p. 333-336 4 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Synthesis and crystal structure of Pb (Ba,Sr)₂(Ln,Ce)₂Cu₃O_y (Ln: lanthanoid, y=9-10.4), a new member of the Pb system

Tokiwa, A., Oku, T., Nagoshi, M., Shindo, D., Kikuchi, M., Oikawa, T., Hiraga, K. & Syono, Y., 1990 12月 1, In: Physica C: Superconductivity and its applications. 172, 1-2, p. 155-165 11 p.

研究成果: Article › 査読

26 被引用数 (Scopus)

Synthesis and crystal structure of Pb₂Sr₂(Ln,Ce)_nCu₃O_6+2n+δ and Pb(Ba,Sr)₂(Ln,Ce)_nCu₃O_5+2n+δ (Ln=Y,n=3,4,... and 0≤δ≤2.0), layered structure compounds with multiple fluorite layers

Tokiwa, A., Oku, T., Nagoshi, M. & Syono, Y., 1991 10月 10, In: Physica C: Superconductivity and its applications. 181, 4-6, p. 311-319 9 p.

研究成果: Article › 査読

39 被引用数 (Scopus)

Synthesis and study of Hg-based 1222-type superconducting cuprates (Hg, M)Sr₂(Ln, Ce)₂Cu₂O(z)

Kandyel, E., Yamamoto, A., Wen, J. G. & Tajima, S., 2000, In: Journal of Solid State Chemistry. 154, 2, p. 488-497 10 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Synthesis and superconducting properties of fluorinated La₂CuO₄ using NH₄F

Adachi, S., Wu, X. J., Tamura, T., Tatsuki, T., Tokiwa-Yamamoto, A. & Tanabe, K., 1997 11月 15, In: Physica C: Superconductivity and its applications. 291, 1-2, p. 59-66 8 p.

研究成果: Article › 査読

10 被引用数 (Scopus)

Synthesis and superconductivity of a new high-T_cTl-Ba-Ca-Cu-O phase

Kikuchi, M., Kobayashi, N., Iwasaki, H., Shindo, D., Oku, T., Tokiwa, A., Kajitani, T., Hiraga, K., Syono, Y. & Muto, Y., 1988 6月, In: Japanese Journal of Applied Physics. 27, 6A, p. L1050-L1053

研究成果: Article › 査読

18 被引用数 (Scopus)

Synthesis and superconductivity of PbBaSrY_1-xCa_xCu₃O₇

Tokiwa, A., Nagoshi, M., Oku, T., Kobayashi, N., Kikuchi, M., Hiraga, K. & Syono, Y., 1990 6月 15, In: Physica C: Superconductivity and its applications. 168, 3-4, p. 285-290 6 p.

研究成果: Article › 査読

34 被引用数 (Scopus)

Synthesis of HgBa₂Ca₃Cu₄O_y under ambient pressure

Usami, R., Adachi, S., Itoh, M., Tatsuki, T., Tokiwa-Yamamoto, A. & Tanabe, K., 1996 5月 10, In: Physica C: Superconductivity and its applications. 262, 1-2, p. 21-26 6 p.

研究成果: Article › 査読

16 被引用数 (Scopus)

Synthesis of nearly single-phase (Hg, Pb)Ba₂Ca₂Cu₃O_8+δ superconductors

Isawa, K., Tokiwa-Yamamoto, A., Itoh, M., Adachi, S. & Yamauchi, H., 1994 12月, In: Physica C: Superconductivity and its applications. 235-240, PART 2, p. 913-914 2 p.

研究成果: Article › 査読

Temperature and time dependence of phase formation of HgBa₂Ca_n-1Cu_nO₂(n+1)+δ superconductors

Yamamoto, A., Itoh, M., Fukuoka, A., Adachi, S., Yamauchi, H. & Tanabe, K., 1999 3月, In: Journal of Materials Research. 14, 3, p. 644-651 8 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

Ten layered hexagonal perovskite Sr₅Ru_5-xO ₁₅ (x = 0.90), a weak ferromagnet with a giant coercive field H _c ∼ 12 T

Yamamoto, A., Hashizume, D., Katori, H. A., Sasaki, T., Ohmichi, E., Nishizaki, T., Kobayashi, N. & Takagi, H., 2010 10月 26, In: Chemistry of Materials. 22, 20, p. 5712-5717 6 p.

研究成果: Article › 査読

9 被引用数 (Scopus)

The effect of Pb doping in HgBa₂Ca₂Cu₃O_8+δ superconductor

Isawa, K., Tokiwa-Yamamoto, A., Itoh, M., Adachi, S. & Yamauchi, H., 1993 11月 10, In: Physica C: Superconductivity and its applications. 217, 1-2, p. 11-15 5 p.

研究成果: Article › 査読

69 被引用数 (Scopus)

Thermal and x-ray analyses of high temperature superconductor YBa2Cu3O6.74

Kikuchi, M., Syono, Y., Tokiwa, A., Oh-Ishi, K., Arai, H., Hiraga, K., Kobayashi, N. & Sasaoka, T., 1987 6月, In: Japanese Journal of Applied Physics. 26, 6A, p. 1066-1099 34 p.

研究成果: Article › 査読

56 被引用数 (Scopus)

Thermal conductivity across the metal-insulator transition in the single-crystalline hyperkagome antiferromagnet Na3+xIr3 O8

Fauqué, B., Xu, X., Bangura, A. F., Hunter, E. C., Yamamoto, A., Behnia, K., Carrington, A., Takagi, H., Hussey, N. E. & Perry, R. S., 2015 2月 25, In: Physical Review B - Condensed Matter and Materials Physics. 91, 7, 075129.

研究成果: Article › 査読

11 被引用数 (Scopus)

Thermoelectric power and resistivity of HgBa₂CuO_4+δ over a wide doping range

Yamamoto, A., Hu, W. Z. & Tajima, S., 2001 12月 14, In: Physical Review B - Condensed Matter and Materials Physics. 63, 2

研究成果: Article › 査読

70 被引用数 (Scopus)

Thermogravimetric study on HgBa₂Ca_n-1Cu_nO_2(n+1)+δ (n = 1, 2, 3) superconductors at various oxygen partial pressures

Tokiwa-Yamamoto, A., Fukuoka, A., Itoh, M., Adachi, S., Yamauchi, H. & Tanabe, K., 1996 10月 1, In: Physica C: Superconductivity and its applications. 269, 3-4, p. 354-360 7 p.

研究成果: Article › 査読

28 被引用数 (Scopus)

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