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Research Output 1986 2019

  • 968 Citations
  • 18 h-Index
  • 84 Article
  • 2 Conference article
  • 1 Conference contribution
  • 1 Comment/debate
2019

Superconducting properties of a mixed anion layered compound, Ca and F co-doped LaFeAsO with T c = 31.5 K

Kaneyasu, K., Sakagami, R., Matoba, M. & Kamihara, Y., 2019 Mar 1, In : Japanese journal of applied physics. 58, 3, 030911.

Research output: Contribution to journalArticle

Open Access
Negative ions
anions
Superconductivity
superconductivity
Chemical analysis
3 Citations (Scopus)

Superconducting transition temperatures in the electronic and magnetic phase diagrams of Sr2VFeAsO3-δ , a superconductor

Tojo, Y., Shibuya, T., Nakamura, T., Shoji, K., Fujioka, H., Matoba, M., Yasui, S., Itoh, M., Iimura, S., Hiramatsu, H., Hosono, H., Hirai, S., Mao, W., Kitao, S., Seto, M. & Kamihara, Y., 2019 Mar 20, In : Journal of physics. Condensed matter : an Institute of Physics journal. 31, 11, 1 p.

Research output: Contribution to journalArticle

Vanadium
vanadium
Superconducting materials
Superconducting transition temperature
Phase diagrams
2018

NMR study of the layered cobalt oxyphosphide Sr2Sc(Co1-xFe x )PO3

Magishi, K., Watanabe, R., Hisada, A., Saito, T., Koyama, K., Okada, S., Kamihara, Y., Ohkubo, N., Ban, S. & Matoba, M., 2018 Apr 19, In : Journal of Physics: Conference Series. 969, 1, 012068.

Research output: Contribution to journalConference article

cobalt
nuclear magnetic resonance
spin-lattice relaxation
nuclear spin
magnetic properties

Transport Properties of the Layered Transition Metal Oxypnictide Sr2ScCo1-xFe x PO3 with Fe-doped Co1-xFe x P layers

Okada, S., Kamihara, Y., Ohkubo, N., Ban, S. & Matoba, M., 2018 Apr 19, In : Journal of Physics: Conference Series. 969, 1, 012032.

Research output: Contribution to journalConference article

transport properties
transition metals
Seebeck effect
electrical resistivity
room temperature
2016
spinel
electronic structure
2015

A ferromagnetic quantum critical point in heavy-fermion iron oxypnictide CeFe<inf>1-</inf><inf>x</inf>Cr<inf>x</inf>PO

Okano, T., Kitao, S., Seto, M., Atou, T., Itoh, M., Matoba, M. & Kamihara, Y., 2015 May 7, In : Journal of Applied Physics. 117, 17, 17E123.

Research output: Contribution to journalArticle

sublattices
critical point
fermions
iron
orbitals
17 Citations (Scopus)

Effect of Sn-substitution on thermoelectric properties of copper-based sulfide, famatinite Cu3SbS4

Goto, Y., Sakai, Y., Kamihara, Y. & Matoba, M., 2015 Apr 15, In : Journal of the Physical Society of Japan. 84, 4, p. 44706 1 p.

Research output: Contribution to journalArticle

sulfides
substitutes
copper
figure of merit
transport properties
4 Citations (Scopus)

Electrical/thermal transport and electronic structure of the binary cobalt pnictides Co Pn <inf>2</inf> (Pn = As and Sb)

Goto, Y., Miyao, S., Kamihara, Y. & Matoba, M., 2015 Jun 1, In : AIP Advances. 5, 6, 067147.

Research output: Contribution to journalArticle

Group 5A compounds
thermal conductivity
cobalt
electronic structure
Seebeck effect
12 Citations (Scopus)

Electrical and thermal transport of layered bismuth-sulfide EuBiS<inf>2</inf>F at temperatures between 300 and 623 K

Goto, Y., Kajitani, J., Mizuguchi, Y., Kamihara, Y. & Matoba, M., 2015 Aug 15, In : Journal of the Physical Society of Japan. 84, 8, 085003.

Research output: Contribution to journalArticle

bismuth sulfides
atomic weights
bismuth
sulfides
ions
4 Citations (Scopus)

Electronic structure and transport properties of Cu-deficient kuramite Cu3-xSnS4

Goto, Y., Sakai, Y., Kamihara, Y. & Matoba, M., 2015 Feb 1, In : Japanese Journal of Applied Physics. 54, 2, 021801.

Research output: Contribution to journalArticle

Electron transport properties
Valence bands
Transport properties
Electronic structure
Density functional theory
8 Citations (Scopus)

Magnetic properties of shandite-phase Co3-xFexSn2S2 (x = 0-1.0) obtained with high pressure synthesis

Sakai, Y., Tanakadate, R., Matoba, M., Yamada, I., Nishiyama, N., Irifune, T., Funakoshi, K., Kunimoto, T., Higo, Y. & Kamihara, Y., 2015 Apr 15, In : Journal of the Physical Society of Japan. 84, 4, p. 44705 1 p.

Research output: Contribution to journalArticle

magnetic properties
synthesis
solubility
pseudopotentials
sulfides
6 Citations (Scopus)

The Electronic Structure of Structurally Strained Mn3O4 Postspinel and the Relationship with Mn3O4 Spinel

Hirai, S., Goto, Y., Sakai, Y., Wakatsuki, A., Kamihara, Y. & Matoba, M., 2015 Nov 15, In : Journal of the Physical Society of Japan. 84, 11, 114702.

Research output: Contribution to journalArticle

spinel
electronic structure
conduction bands
optical measurement
optical spectrum
2014
8 Citations (Scopus)

Effect of indium substitution on the thermoelectric properties of orthorhombic Cu4SnS4

Goto, Y., Kamihara, Y. & Matoba, M., 2014, In : Journal of Electronic Materials. 43, 6, p. 2202-2205 4 p.

Research output: Contribution to journalArticle

Indium
indium
Substitution reactions
substitutes
Phase transitions
16 Citations (Scopus)

Effects of the Cu off-stoichiometry on transport properties of wide gap p -type semiconductor, layered oxysulfide LaCuSO

Goto, Y., Tanaki, M., Okusa, Y., Shibuya, T., Yasuoka, K., Matoba, M. & Kamihara, Y., 2014, In : Applied Physics Letters. 105, 2, 022104.

Research output: Contribution to journalArticle

p-type semiconductors
stoichiometry
transport properties
optical absorption
sulfur
29 Citations (Scopus)

Enhancement of thermoelectric properties by Se substitution in layered bismuth-chalcogenide LaOBiS2-xSex

Mizuguchi, Y., Omachi, A., Goto, Y., Kamihara, Y., Matoba, M., Hiroi, T., Kajitani, J. & Miura, O., 2014, In : Journal of Applied Physics. 116, 16, 163915.

Research output: Contribution to journalArticle

bismuth
substitutes
augmentation
chalcogenides
figure of merit
44 Citations (Scopus)

From kesterite to stannite photovoltaics: Stability and band gaps of the Cu2(Zn,Fe)SnS4 alloy

Shibuya, T., Goto, Y., Kamihara, Y., Matoba, M., Yasuoka, K., Burton, L. A. & Walsh, A., 2014 Jan 13, In : Applied Physics Letters. 104, 2, 021912.

Research output: Contribution to journalArticle

photoabsorption
blue shift
solid solutions
solubility
solar cells
2 Citations (Scopus)

New phases of binary compounds: CsCl-type RuGe and RuSn

Sakai, Y., Matoba, M., Yamada, I., Funakoshi, K., Kunimoto, T., Higo, Y. & Kamihara, Y., 2014 Sep 1, In : EPL. 107, 5, 56003.

Research output: Contribution to journalArticle

orbitals
dynamic characteristics
Fermi surfaces
heat treatment
density functional theory
9 Citations (Scopus)

The effect of simultaneous substitution on the electronic band structure and thermoelectric properties of Se-doped Co3SnInS2 with the Kagome lattice

Fujioka, M., Shibuya, T., Nakai, J., Yoshiyasu, K., Sakai, Y., Takano, Y., Kamihara, Y. & Matoba, M., 2014, In : Solid State Communications. 199, p. 56-60 5 p.

Research output: Contribution to journalArticle

Indium
Crystal lattices
Band structure
indium
Substitution reactions
2 Citations (Scopus)
transport properties
transition metals
Seebeck effect
electrical resistivity
temperature
2013
4 Citations (Scopus)
superconductivity
anions
iron
annealing
tubes
17 Citations (Scopus)

Enhanced thermoelectric figure of merit in stannite-kuramite solid solutions Cu2+xFe1-xSnS4-y (x = 0-1) with anisotropy lowering

Goto, Y., Naito, F., Sato, R., Yoshiyasu, K., Itoh, T., Kamihara, Y. & Matoba, M., 2013 Sep 2, In : Inorganic Chemistry. 52, 17, p. 9861-9866 6 p.

Research output: Contribution to journalArticle

figure of merit
Solid solutions
Anisotropy
solid solutions
anisotropy
9 Citations (Scopus)
critical point
fermions
tuning
iron
retarding
6 Citations (Scopus)
activation energy
density functional theory
electronic structure
gradients
approximation
7 Citations (Scopus)

Magnetic properties of shandite-type Co3Sn2S2-xSex

Sakai, Y., Kamihara, Y. & Matoba, M., 2013 Aug, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 10, 7-8, p. 1130-1131 2 p.

Research output: Contribution to journalArticle

substitutes
magnetic properties
magnetization
2 Citations (Scopus)

Pressure-induced tetragonal-orthorhombic phase transitions in CeRuPO

Hirai, S., Kamihara, Y., Wakatsuki, A., Matoba, M. & Mao, W. L., 2013 Feb 4, In : Applied Physics Letters. 102, 5, 051917.

Research output: Contribution to journalArticle

critical point
ground state
2012
18 Citations (Scopus)

Ferromagnetic quantum critical point in heavy-fermion iron oxypnictide Ce(Ru1-xFex)PO

Kitagawa, S., Ishida, K., Nakamura, T., Matoba, M. & Kamihara, Y., 2012 Nov 27, In : Physical Review Letters. 109, 22, 227004.

Research output: Contribution to journalArticle

critical point
fermions
iron
substitutes
Curie temperature
5 Citations (Scopus)
isomers
fermions
iron
shift
spectroscopy
5 Citations (Scopus)

Physical properties of the novel layered cobalt oxyphosphide Sr 2ScCoPO3

Okada, S., Kamihara, Y., Ohkubo, N., Ban, S., Matoba, M. & Atou, T., 2012, In : Journal of Physics: Conference Series. 400, PART 2, 022091.

Research output: Contribution to journalArticle

cobalt
physical properties
thermoelectric materials
fluorite
room temperature
2011
8 Citations (Scopus)

Analysis of interdiffusion between SmFeAsO0.92F0.08 and metals for exsitu fabrication of superconducting wire

Fujioka, M., Matoba, M., Ozaki, T., Takano, Y., Kumakura, H. & Kamihara, Y., 2011 Jul, In : Superconductor Science and Technology. 24, 7, 075024.

Research output: Contribution to journalArticle

Superconducting wire
sheaths
Metals
wire
Fabrication
43 Citations (Scopus)

Effective ex-situ fabrication of F-doped SmFeAsO wire for high transport critical current density

Fujioka, M., Kota, T., Matoba, M., Ozaki, T., Takano, Y., Kumakura, H. & Kamihara, Y., 2011 Jun, In : Applied Physics Express. 4, 6, 063102.

Research output: Contribution to journalArticle

Binders
critical current
wire
Wire
current density
2009
1 Citation (Scopus)
substitutes
magnetic properties
cobalt
magnetization
radii
2008
19 Citations (Scopus)

Electronic and magnetic nature of shandite-type A2Co3S2(A = Sn, In)

Umetani, A., Nagoshi, E., Kubodera, T. & Matoba, M., 2008 Apr 1, In : Physica B: Condensed Matter. 403, 5-9, p. 1356-1358 3 p.

Research output: Contribution to journalArticle

Maximum entropy methods
Electronic density of states
electronics
maximum entropy method
X ray photoelectron spectroscopy

Thermoelectric figure of merit of anisotropic bulk materials in the presence of polar optical phonon scattering

Ikeda, K. & Matoba, M., 2008 Apr 18, In : Japanese Journal of Applied Physics. 47, 4 PART 1, p. 2189-2191 3 p.

Research output: Contribution to journalArticle

Phonon scattering
figure of merit
Anisotropy
scattering
Thermal conductivity
2007
2 Citations (Scopus)

Scattering anisotropy effect on layered thermoelectric materials

Ikeda, K., Yago, T. & Matoba, M., 2007 Jul 4, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 46, 7 A, p. 4184-4188 5 p.

Research output: Contribution to journalArticle

thermoelectric materials
figure of merit
Relaxation time
Anisotropy
relaxation time
2006
1 Citation (Scopus)

Electronic nature of layered oxysulfide Sr2-xCa xCu2CoO2S2 with CoO2 planes

Ito, K., Endo, T., Kubodera, T., Kamihara, Y., Matoba, M. & Kitô, H., 2006, In : Journal of Applied Physics. 99, 8, 08F705.

Research output: Contribution to journalArticle

electronics
photoelectric emission
valence
conduction
causes
21 Citations (Scopus)

Low-temperature magnetoresistance of layered cobalt oxides Nax CoO2

Okabe, H., Akimitsu, J., Kubodera, T., Matoba, M., Kyomen, T. & Itoh, M., 2006 May 1, In : Physica B: Condensed Matter. 378-380, SPEC. ISS., p. 863-864 2 p.

Research output: Contribution to journalArticle

cobalt oxides
Magnetoresistance
Cobalt
Oxides
electronics
1 Citation (Scopus)

Magnetic properties of Fe1-xCoxCr2S 4

Noda, R., Kamihara, Y. & Matoba, M., 2006, In : Journal of Applied Physics. 99, 8, 08F712.

Research output: Contribution to journalArticle

exponents
substitutes
magnetic properties
transition points
spin glass
2 Citations (Scopus)

Mass anisotropy effects on the thermoelectric figure of merit and Seebeck coefficient

Ikeda, K., Yago, T. & Matoba, M., 2006, International Conference on Thermoelectrics, ICT, Proceedings. p. 293-295 3 p. 4133291

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Seebeck coefficient
Anisotropy
Relaxation time
Scattering
1 Citation (Scopus)

Metal-nonmetal transition in Ge doped spinel-type CuCr2 S4

Kamihara, Y., Matoba, M., Kyomen, T. & Itoh, M., 2006 May 1, In : Physica B: Condensed Matter. 378-380, SPEC. ISS., p. 1120-1121 2 p.

Research output: Contribution to journalArticle

Nonmetals
spinel
Substitution reactions
Metals
transition metals
23 Citations (Scopus)

Ni substitution effect on magnetic and transport properties in metallic ferromagnet Co3 Sn2 S2

Kubodera, T., Okabe, H., Kamihara, Y. & Matoba, M., 2006 May 1, In : Physica B: Condensed Matter. 378-380, SPEC. ISS., p. 1142-1143 2 p.

Research output: Contribution to journalArticle

Nix
Magnetism
Magnetic susceptibility
Transport properties
Magnetization
2005
32 Citations (Scopus)

Transport properties and electronic states in the layered thermoelectric rhodate (Bi1-xPbx)1.8Ba2Rh 1.9Oy

Okada, S., Terasaki, I., Okabe, H. & Matoba, M., 2005 May, In : Journal of the Physical Society of Japan. 74, 5, p. 1525-1528 4 p.

Research output: Contribution to journalArticle

Hall effect
transport properties
rhodium
coefficients
electronics

Transport properties of Fe1-xMnxCr2S 4

Kamihara, Y., Takeshita, Y., Matoba, M., Kyomen, T. & Itoh, M., 2005 Apr 30, In : Physica B: Condensed Matter. 359-361, SPEC. ISS., p. 1207-1209 3 p.

Research output: Contribution to journalArticle

Spin glass
Transport properties
Superconducting transition temperature
transport properties
Doping (additives)
2004
6 Citations (Scopus)

Dielectric responses of the layered cobalt oxysulfide Sr2Cu 2CoO2S2 with CoO2 square planes

Okada, S., Terasaki, I., Ooyama, H. & Matoba, M., 2004 Jun 1, In : Journal of Applied Physics. 95, 11 II, p. 6816-6818 3 p.

Research output: Contribution to journalArticle

cobalt
electrical resistivity
neel temperature
permittivity
conductivity
13 Citations (Scopus)

First-principles study of electronic and magnetic structure in layered cobaltite Na0.75CoO2

Okabe, H., Matoba, M., Kyomen, T. & Itoh, M., 2004 Jun 1, In : Journal of Applied Physics. 95, 11 II, p. 6831-6833 3 p.

Research output: Contribution to journalArticle

electronic structure
ions
approximation
spin glass
magnetic moments
9 Citations (Scopus)

Magnetoresistance in spinel-type MgxCu1-xCr 2S4

Kamihara, Y., Matoba, M., Kyomen, T. & Itoh, M., 2004 Oct, In : Solid State Communications. 132, 3-4, p. 247-251 5 p.

Research output: Contribution to journalArticle

Ferromagnetism
Magnetoresistance
ferromagnetism
spinel
Substitution reactions
2003

Doping effect on transport properties of layered oxysulfide Sr 2Cu2CoO2S2 with CoO2 square planes

Okada, S., Okabe, H. & Matoba, M., 2003 May, In : Physica B: Condensed Matter. 329-333, II, p. 916-917 2 p.

Research output: Contribution to journalArticle

Seebeck coefficient
Seebeck effect
Transport properties
transport properties
Doping (additives)
1 Citation (Scopus)

Magnetic phase transition in PdxCoyO2

Okabe, H., Matoba, M. & Itoh, M., 2003 May, In : Physica B: Condensed Matter. 329-333, II, p. 948-949 2 p.

Research output: Contribution to journalArticle

Phase transitions
Spin glass
Inductively coupled plasma
Magnetic susceptibility
plasma spectra
9 Citations (Scopus)

Magnetic property and electronic structure of itinerant PdxCoyO2 magnets

Okabe, H., Matoba, M., Kyomen, T. & Itoh, M., 2003 May 15, In : Journal of Applied Physics. 93, 10 2, p. 7258-7260 3 p.

Research output: Contribution to journalArticle

magnets
electronic structure
magnetic properties
orbitals
tin
2002
10 Citations (Scopus)

Magnetic and electronic nature of layered manganese oxysulfide Sr 2CuMnO 3S

Kamihara, Y., Matoba, M., Kyomen, T. & Itoh, M., 2002 May 15, In : Journal of Applied Physics. 91, 10 I, p. 8864-8866 3 p.

Research output: Contribution to journalArticle

manganese
photoelectric emission
electronics
Curie-Weiss law
spectroscopy
15 Citations (Scopus)

Magnetic anomalies in NaxCoO2 (x = 0.75)

Takeuchi, T., Matoba, M., Aharen, T. & Itoh, M., 2002 Mar, In : Physica B: Condensed Matter. 312-313, p. 719-720 2 p.

Research output: Contribution to journalArticle

magnetic anomalies
Magnetic susceptibility
magnetic permeability
Spin glass
Magnetic variables measurement