• 3751 Citations
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1987 …2019

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2019
Open Access
2018

Charge dynamics and metal-insulator transition in perovskite SrIr1−xSnxO3

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

Research output: Contribution to journalArticle

2 Citations (Scopus)
2017

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

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

Research output: Contribution to journalArticle

25 Citations (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 Jul 31, In : Physical Review Letters. 119, 5, 057001.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Magnetic susceptibility of optimally doped HgBa2CuO4+δ

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

Research output: Contribution to journalArticle

1 Citation (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 Mar 21, In : Physical Review B. 95, 10, 104428.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Ultraslow fluctuations in the pseudogap states of HgBa2CaCu2 O6+δ

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

Research output: Contribution to journalArticle

7 Citations (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 Apr 20, In : Inorganic Chemistry. 54, 8, p. 4114-4119 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

28 Citations (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 Feb 25, In : Physical Review B - Condensed Matter and Materials Physics. 91, 7, 075129.

Research output: Contribution to journalArticle

10 Citations (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 Jan 9, In : Physical Review B - Condensed Matter and Materials Physics. 87, 4, 045108.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Zero resistivity above 150K in HgBa2Ca2Cu 3O8+δ at high pressure

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

Research output: Contribution to journalArticle

43 Citations (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 Jun 8, In : Physical Review Letters. 108, 23, 237001.

Research output: Contribution to journalArticle

58 Citations (Scopus)
2011

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

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

Research output: Contribution to journalArticle

Superconducting Phase at 7.7 K in the HgxReO3 Compound with a Hexagonal Bronze Structure

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

Research output: Contribution to journalArticle

6 Citations (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 Sep 8, In : Physical Review B - Condensed Matter and Materials Physics. 82, 9, 094413.

Research output: Contribution to journalArticle

8 Citations (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 Dec 1, In : Physica C: Superconductivity and its applications. 470, SUPPL.1, p. S633-S634

Research output: Contribution to journalArticle

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

Research output: Contribution to journalArticle

19 Citations (Scopus)

Ten layered hexagonal perovskite Sr5Ru5-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 Oct 26, In : Chemistry of Materials. 22, 20, p. 5712-5717 6 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2007

Fermi level shift in la1-xSrxMO3 (M=Mn, Fe, Co, and Ni) probed by Schottky-like heteroepitaxial junctions with SrTi 0.99Nb0.01O3

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

Research output: Contribution to journalArticle

43 Citations (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 Apr 1, In : journal of the physical society of japan. 76, 4, 043703.

Research output: Contribution to journalArticle

32 Citations (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 Jun 1, In : Journal of the Physical Society of Japan. 76, 6, 063707.

Research output: Contribution to journalArticle

9 Citations (Scopus)
2006

Phonon softening in HgBa2CuO4+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 Jan 1, In : Journal of Physics and Chemistry of Solids. 67, 1-3, p. 294-297 4 p.

Research output: Contribution to journalArticle

2005

Effects of carbon incorporation on doping state of YBa2Cu 3Oy

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

Research output: Contribution to journalArticle

7 Citations (Scopus)
2004

Carbon-substitution effect on superconducting properties in MgB2 single crystals

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

Research output: Contribution to journalArticle

24 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

63 Citations (Scopus)

Metallization of La1/3NbO3 by lithium incorporation

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

Research output: Contribution to journalArticle

6 Citations (Scopus)

Phonon softening in HgBa2CuO4+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 Dec 1, In : Physica Status Solidi C: Conferences. 1, 11, p. 3130-3133 4 p.

Research output: Contribution to journalArticle

Softening of Cu-O bond stretching phonons in tetragonal HgBa 2CuO4+δ

Uchiyama, H., Baron, A. Q. R., Tsutsui, S., Tanaka, Y., Hu, W. Z., Yamamoto, A., Tajima, S. & Endoh, Y., 2004 May 14, In : Physical Review Letters. 92, 19, p. 197005-1-197005-4 203601.

Research output: Contribution to journalArticle

64 Citations (Scopus)
2003

Carbon-substituted MgB2 single crystals

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

Research output: Contribution to journalArticle

206 Citations (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 Feb 1, In : Superconductor Science and Technology. 16, 2, p. 213-220 8 p.

Research output: Contribution to journalArticle

32 Citations (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 Jul 17, In : Physical Review Letters. 91, 3

Research output: Contribution to journalArticle

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 Jul 18, In : Physical Review Letters. 91, 3, p. 037003/1-037003/4

Research output: Contribution to journalArticle

59 Citations (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. & 1 others, Perera, R. C. C., 2003, In : Physical Review B - Condensed Matter and Materials Physics. 68, 6

Research output: Contribution to journalArticle

16 Citations (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 Oct 1, In : Acta Crystallographica Section B: Structural Science. 59, 5, p. 575-583 9 p.

Research output: Contribution to journalArticle

25 Citations (Scopus)
2002

Crystal growth of Bi2Sr2Ca2Cu3O10+x and (Bi,Pb)2Sr2Ca2Cu3O10+x by the KCl flux method

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

Research output: Contribution to journalArticle

7 Citations (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 Jan 1, In : Physical Review Letters. 88, 21, 1 p.

Research output: Contribution to journalArticle

6 Citations (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 May 27, In : Physical Review Letters. 88, 21, p. 2170021-2170024 4 p.

Research output: Contribution to journalArticle

107 Citations (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 Jan 1, In : Physical Review B - Condensed Matter and Materials Physics. 65, 10, p. 1-7 7 p.

Research output: Contribution to journalArticle

Effects of Zn substitution on the superconductivity and pseudogap in HgBa2CuO4+δ with various doping levels

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

Research output: Contribution to journalArticle

34 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

Electron density distribution in a single crystal of Mg1-xB2 [x=0.045(5)]

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

Research output: Contribution to journalArticle

32 Citations (Scopus)

Electronic state of MgB2 superconductor

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

Research output: Contribution to journalArticle

5 Citations (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 Jan 1, In : Physical Review Letters. 88, 4, 1 p.

Research output: Contribution to journalArticle

6 Citations (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 Jan 28, In : Physical Review Letters. 88, 4, p. 470021-470024 4 p., 047002.

Research output: Contribution to journalArticle

151 Citations (Scopus)

High-pressure synthesis of superconducting Nb1-xB2 (x = 0-0.48) with the maximum Tc = 9.2 K

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

Research output: Contribution to journalArticle

71 Citations (Scopus)

Kinetic study of (Bi,Pb)2Sr2Ca2Cu3O10+x phase formation in KCl flux

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

22 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

1 Citation (Scopus)

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

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

Research output: Contribution to journalArticle

85 Citations (Scopus)