Ayako Yamamoto

2019

Characteristics of cuprate superconductors against pressure and carrier doping: How can we find a new superconductor with the highest tc?

Takeshita, N., Yamamoto, A. & Sasaki, M., 2019 1 1, ： : Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu. 29, 4, p. 254-261 8 p.

研究成果: Article

公開

2018

Charge dynamics and metal-insulator transition in perovskite SrIr_1−xSn_xO₃

Fujioka, J., Okawa, T., Masuko, M., Yamamoto, A. & Tokura, Y., 2018 1 1, ： : Journal of the Physical Society of Japan. 87, 12, 123706.

研究成果: Article

2 引用（Scopus）

2017

Correlated Dirac semimetallic state with unusual positive magnetoresistance in strain-free perovskite SrIrO3

Fujioka, J., Okawa, T., Yamamoto, A. & Tokura, Y., 2017 3 3, ： : Physical Review B. 95, 12, 121102.

研究成果: Article

22 引用（Scopus）

Evidence for Weakly Correlated Oxygen Holes in the Highest- Tc Cuprate Superconductor HgBa2Ca2Cu3 O8+δ

Chainani, A., Sicot, M., Fagot-Revurat, Y., Vasseur, G., Granet, J., Kierren, B., Moreau, L., Oura, M., Yamamoto, A., Tokura, Y. & Malterre, D., 2017 7 31, ： : Physical Review Letters. 119, 5, 057001.

研究成果: Article

3 引用（Scopus）

Magnetic susceptibility of optimally doped HgBa2CuO4+δ

Itoh, Y., Machi, T. & Yamamoto, A., 2017 12 13, ： : Physical Review B. 96, 23, 235118.

研究成果: Article

1 引用（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 21, ： : Physical Review B. 95, 10, 104428.

研究成果: Article

4 引用（Scopus）

Ultraslow fluctuations in the pseudogap states of HgBa2CaCu2 O6+δ

Itoh, Y., Machi, T. & Yamamoto, A., 2017 3 6, ： : Physical Review B - Condensed Matter and Materials Physics. 95, 9, 094501.

研究成果: Article

7 引用（Scopus）

2015

Coexistence of monochalocogen and dichalocogen ions in BiSe₂ and BiS₂ crystals prepared at high pressure

Yamamoto, A., Hashizume, D., Bahramy, M. S. & Tokura, Y., 2015 4 20, ： : Inorganic Chemistry. 54, 8, p. 4114-4119 6 p.

研究成果: Article

3 引用（Scopus）

High pressure effects revisited for the cuprate superconductor family with highest critical temperature

Yamamoto, A., Takeshita, N., Terakura, C. & Tokura, Y., 2015 12 1, ： : Nature Communications. 6, 8990.

研究成果: Article

26 引用（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 25, ： : Physical Review B - Condensed Matter and Materials Physics. 91, 7, 075129.

研究成果: Article

10 引用（Scopus）

2013

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 9, ： : Physical Review B - Condensed Matter and Materials Physics. 87, 4, 045108.

研究成果: Article

2 引用（Scopus）

Zero resistivity above 150K in HgBa₂Ca₂Cu ₃O_8+δ at high pressure

Takeshita, N., Yamamoto, A., Iyo, A. & Eisaki, H., 2013 2 1, ： : Journal of the Physical Society of Japan. 82, 2, 023711.

研究成果: Article

42 引用（Scopus）

2012

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 8, ： : Physical Review Letters. 108, 23, 237001.

研究成果: Article

57 引用（Scopus）

2011

Metal-Insulator Transition and Magnetic Order in the Pyrochlore Oxide Hg2Ru2O7

Yamamoto, A., Yoshida, M. & Takigawa, M., 2011, ： : Journal of the Physical Society of Japan.

研究成果: Article

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 4, ： : Physical Review Letters. 106, 1, 017001.

研究成果: Article

5 引用（Scopus）

2010

Magnetic ground state of pyrochlore oxides close to metal-insulator boundary probed by muon spin rotation

Miyazaki, M., Kadono, R., Satoh, K. H., Hiraishi, M., Takeshita, S., Koda, A., Yamamoto, A. & Takagi, H., 2010 9 8, ： : Physical Review B - Condensed Matter and Materials Physics. 82, 9, 094413.

研究成果: Article

8 引用（Scopus）

On the possibility of MgB₂-like superconductivity in potassium hexaboride

Katsura, Y., Yamamoto, A., Ogino, H., Horii, S., Shimoyama, J. I., Kishio, K. & Takagi, H., 2010 12 1, ： : Physica C: Superconductivity and its applications. 470, SUPPL.1, p. S633-S634

研究成果: Article

2 引用（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 1, ： : Physica C: Superconductivity and its applications. 470, SUPPL.1, p. S296-S297

研究成果: Article

19 引用（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 26, ： : Chemistry of Materials. 22, 20, p. 5712-5717 6 p.

研究成果: Article

6 引用（Scopus）

2007

Fermi level shift in la_1-xSr_xMO₃ (M=Mn, Fe, Co, and Ni) probed by Schottky-like heteroepitaxial junctions with SrTi _0.99Nb_0.01O₃

Sawa, A., Yamamoto, A., Yamada, H., Fujii, T., Kawasaki, M., Matsuno, J. & Tokura, Y., 2007 8 2, ： : Applied Physics Letters. 90, 25, 252102.

研究成果: Article

43 引用（Scopus）

Metal-insulator transition in a pyrochlore-type ruthenium oxide, Hg ₂Ru₂O₇

Yamamoto, A., Sharma, P. A., Okamoto, Y., Nakao, A., Aruga Katori, H., Niitaka, S., Hashizume, D. & Takagi, H., 2007 4 1, ： : journal of the physical society of japan. 76, 4, 043703.

研究成果: Article

32 引用（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 1, ： : Journal of the Physical Society of Japan. 76, 6, 063707.

研究成果: Article

9 引用（Scopus）

2006

Phonon softening in HgBa₂CuO_4+δ and MgB ₂

Uchiyama, H., Baron, A. Q. R., Tsutsui, S., Tanaka, Y., Ishikawa, D., Lee, S., Hu, W. Z., Yamamoto, A., Heid, R., Bohnen, K. P., Ishikawa, T., Tajima, S. & Endoh, Y., 2006 1 1, ： : Journal of Physics and Chemistry of Solids. 67, 1-3, p. 294-297 4 p.

研究成果: Article

2005

Effects of carbon incorporation on doping state of YBa₂Cu ₃O_y

Yamamoto, A., Hirose, K., Itoh, Y., Kakeshita, T. & Tajima, S., 2005 5 1, ： : Physica C: Superconductivity and its applications. 421, 1-4, p. 1-9 9 p.

研究成果: Article

7 引用（Scopus）

2004

Carbon-substitution effect on superconducting properties in MgB₂ single crystals

Masui, T., Lee, S., Yamamoto, A., Uchiyama, H. & Tajima, S., 2004 10 1, ： : Physica C: Superconductivity and its applications. 412-414, SPEC. ISS., p. 303-306 4 p.

研究成果: Article

24 引用（Scopus）

Crystal growth of C-doped MgB₂ superconductors: Accidental doping and inhomogeneity

Lee, S., Masui, T., Yamamoto, A., Uchiyama, H. & Tajima, S., 2004 10 1, ： : Physica C: Superconductivity and its applications. 412-414, SPEC. ISS., p. 31-35 5 p.

研究成果: Article

62 引用（Scopus）

Metallization of La_1/3NbO₃ by lithium incorporation

Yamamoto, A., Uchiyama, H. & Tajima, S., 2004 9 1, ： : Materials Research Bulletin. 39, 11, p. 1691-1699 9 p.

研究成果: Article

6 引用（Scopus）

Phonon softening in HgBa₂CuO_4+δ observed by inelastic X-ray scattering

Uchiyama, H., Baron, A. Q. R., Tsutsui, S., Tanaka, Y., Hu, W. Z., Yamamoto, A., Tajima, S. & Endoh, Y., 2004 12 1, ： : Physica Status Solidi C: Conferences. 1, 11, p. 3130-3133 4 p.

研究成果: Article

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 14, ： : Physical Review Letters. 92, 19, p. 197005-1-197005-4 203601.

研究成果: Article

62 引用（Scopus）

2003

Carbon-substituted MgB₂ single crystals

Lee, S., Masui, T., Yamamoto, A., Uchiyama, H. & Tajima, S., 2003 10 1, ： : Physica C: Superconductivity and its applications. 397, 1-2, p. 7-13 7 p.

研究成果: Article

204 引用（Scopus）

Crystal growth and characterization of MgB₂: The relation between structural and superconducting properties

Lee, S., Masui, T., Mori, H., Eltsev, Y., Yamamoto, A. & Tajima, S., 2003 2 1, ： : Superconductor Science and Technology. 16, 2, p. 213-220 8 p.

研究成果: Article

32 引用（Scopus）

Determination of the Fermi Surface of [Formula presented] by the de Haas–van Alphen Effect

Carrington, A., Meeson, P. J., Cooper, J. R., Balicas, L., Hussey, N. E., Yelland, E. A., Lee, S., Yamamoto, A., Tajima, S., Kazakov, S. M. & Karpinski, J., 2003 7 17, ： : Physical Review Letters. 91, 3

研究成果: Article

Determination of the Fermi surface of MgB₂ by the de Haas-van Alphen effect

Carrington, A., Meeson, P. J., Cooper, J. R., Balicas, L., Hussey, N. E., Yelland, E. A., Lee, S., Yamamoto, A., Tajima, S., Kazakov, S. M. & Karpinski, J., 2003 7 18, ： : Physical Review Letters. 91, 3, p. 037003/1-037003/4

研究成果: Article

59 引用（Scopus）

Electronic structure of B 2pσ and pπ states in MgB₂, AlB₂, and ZrB₂ single crystals

Nakamura, J., Nasubida, S. Y., Kabasawa, E., Yamazaki, H., Yamada, N., Kuroki, K., Watanabe, M., Oguchi, T., Lee, S., Yamamoto, A., Tajima, S., Umeda, Y., Minakawa, S., Kimura, N., Aoki, H., Otani, S., Shin, S., Callcott, T. A., Ederer, D. L., Denlinger, J. D. および1人, Perera, R. C. C., 2003 1 1, ： : Physical Review B - Condensed Matter and Materials Physics. 68, 6

研究成果: Article

16 引用（Scopus）

Features of the electron density in magnesium diboride: Reconstruction from X-ray diffraction data and comparison with TB-LMTO and FPLO calculations

Tsirelson, V., Stash, A., Kohout, M., Rosner, H., Mori, H., Sato, S., Lee, S., Yamamoto, A., Tajima, S. & Grin, Y., 2003 10 1, ： : Acta Crystallographica Section B: Structural Science. 59, 5, p. 575-583 9 p.

研究成果: Article

25 引用（Scopus）

2002

Crystal growth of Bi₂Sr₂Ca₂Cu₃O_10+x and (Bi,Pb)₂Sr₂Ca₂Cu₃O_10+x by the KCl flux method

Lee, S., Yamamoto, A. & Tajima, S., 2002 9, ： : Journal of Materials Research. 17, 9, p. 2286-2293 8 p.

研究成果: Article

7 引用（Scopus）

De Haas–van Alphen Effect in Single Crystal [Formula presented]

Yelland, E. A., Cooper, J. R., Carrington, A., Hussey, N. E., Meeson, P. J., Lee, S., Yamamoto, A. & Tajima, S., 2002 1 1, ： : Physical Review Letters. 88, 21, 1 p.

研究成果: Article

6 引用（Scopus）

de Haas-van Alphen effect in single crystal MgB₂

Yelland, E. A., Cooper, J. R., Carrington, A., Hussey, N. E., Meeson, P. J., Lee, S., Yamamoto, A. & Tajima, S., 2002 5 27, ： : Physical Review Letters. 88, 21, p. 2170021-2170024 4 p.

研究成果: Article

107 引用（Scopus）

Effects of Zn substitution on the superconductivity and pseudogap in (formula presented) with various doping levels

Yamamoto, A., Minami, K., Hu, W. Z., Miyakita, A., Izumi, M. & Tajima, S., 2002 1 1, ： : Physical Review B - Condensed Matter and Materials Physics. 65, 10, p. 1-7 7 p.

研究成果: Article

Effects of Zn substitution on the superconductivity and pseudogap in HgBa₂CuO_4+δ with various doping levels

Yamamoto, A., Minami, K., Hu, W. Z., Miyakita, A., Izumi, M. & Tajima, S., 2002 3 1, ： : Physical Review B - Condensed Matter and Materials Physics. 65, 10, p. 1045051-1045057 7 p., 104505.

研究成果: Article

34 引用（Scopus）

Electron density distribution in a single crystal of (formula presented) (formula presented)

Mori, H., Lee, S., Yamamoto, A., Tajima, S. & Sato, S., 2002 1 1, ： : Physical Review B - Condensed Matter and Materials Physics. 65, 9, p. 1-4 4 p.

研究成果: Article

Electron density distribution in a single crystal of Mg_1-xB₂ [x=0.045(5)]

Mori, H., Lee, S., Yamamoto, A., Tajima, S. & Sato, S., 2002 3 1, ： : Physical Review B - Condensed Matter and Materials Physics. 65, 9, p. 925071-925074 4 p., 092507.

研究成果: Article

32 引用（Scopus）

Electronic state of MgB₂ superconductor

Tajima, S., Masui, T., Uchiyama, H., Quilty, J. W., Eltsev, Y., Lee, S., Yamamoto, A. & Mori, H., 2002 8 1, ： : Current Applied Physics. 2, 4, p. 315-319 5 p.

研究成果: Article

5 引用（Scopus）

Exponential Temperature Dependence of the Penetration Depth in Single Crystal [Formula presented]

Manzano, F., Carrington, A., Hussey, N. E., Lee, S., Yamamoto, A. & Tajima, S., 2002 1 1, ： : Physical Review Letters. 88, 4, 1 p.

研究成果: Article

6 引用（Scopus）

Exponential temperature dependence of the penetration depth in single crystal MgB₂

Manzano, F., Carrington, A., Hussey, N. E., Lee, S., Yamamoto, A. & Tajima, S., 2002 1 28, ： : Physical Review Letters. 88, 4, p. 470021-470024 4 p., 047002.

研究成果: Article

151 引用（Scopus）

High-pressure synthesis of superconducting Nb_1-xB₂ (x = 0-0.48) with the maximum T_c = 9.2 K

Yamamoto, A., Takao, C., Masui, T., Izumi, M. & Tajima, S., 2002 12 15, ： : Physica C: Superconductivity and its applications. 383, 3, p. 197-206 10 p.

研究成果: Article

71 引用（Scopus）

Kinetic study of (Bi,Pb)₂Sr₂Ca₂Cu₃O_10+x phase formation in KCl flux

Lee, S., Yamamoto, A. & Tajima, S., 2002 9, ： : Journal of Materials Research. 17, 9, p. 2281-2285 5 p.

研究成果: Article

2 引用（Scopus）

Magnetization behavior of MgB₂ and the effect of high energy heavy-ion irradiation

Chikumoto, N., Yamamoto, A., Konczykowski, M. & Murakami, M., 2002 10 1, ： : Physica C: Superconductivity and its applications. 378-381, PART 1, p. 466-469 4 p.

研究成果: Article

22 引用（Scopus）

Peak Effect in Single Crystal [Formula presented] Superconductor for [Formula presented]-Axis

Pissas, M., Lee, S., Yamamoto, A. & Tajima, S., 2002 1 1, ： : Physical Review Letters. 89, 9

研究成果: Article

1 引用（Scopus）

Peak effect in single crystal MgB₂ superconductor for H ∥ c-axis

Pissas, M., Lee, S., Yamamoto, A. & Tajima, S., 2002 8 26, ： : Physical Review Letters. 89, 9, p. 970021-970024 4 p., 097002.

研究成果: Article

85 引用（Scopus）

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