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Research Output 2002 2019

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2019
2 Citations (Scopus)

Enhanced thermoelectricity by controlled local structure in bismuth-chalcogenides

Terashima, K., Yano, Y., Paris, E., Goto, Y., Mizuguchi, Y., Kamihara, Y., Wakita, T., Muraoka, Y., Saini, N. L. & Yokoya, T., 2019 Apr 14, In : Journal of Applied Physics. 125, 14, 145105.

Research output: Contribution to journalArticle

thermoelectricity
chalcogenides
bismuth
electronic structure
thermoelectric materials

Improvement of the Superconducting Properties of GdBa2Cu3O7-δ with Nano-Sized Ferrite Addition

Malaeb, W., Basma, H., Awad, R., Hibino, T. & Kamihara, Y., 2019 Jan 1, In : Journal of Superconductivity and Novel Magnetism.

Research output: Contribution to journalArticle

Ferrites
Ferrite
ferrites
Magnetic hysteresis
SQUIDs

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
2 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
5 Citations (Scopus)

Oxygen vacancy-originated highly active electrocatalysts for the oxygen evolution reaction

Hirai, S., Morita, K., Yasuoka, K., Shibuya, T., Tojo, Y., Kamihara, Y., Miura, A., Suzuki, H., Ohno, T., Matsuda, T. & Yagi, S., 2018 Jan 1, In : Journal of Materials Chemistry A. 6, 31, p. 15102-15109 8 p.

Research output: Contribution to journalArticle

Electrocatalysts
Oxygen vacancies
Reactive Oxygen Species
Oxygen
Hydrogen fuels
7 Citations (Scopus)

Synthesis, crystal structure, and thermoelectric properties of layered antimony selenides reosbse2 (RE = La, Ce)

Goto, Y., Miura, A., Sakagami, R., Kamihara, Y., Moriyoshi, C., Kuroiwa, Y. & Mizuguchi, Y., 2018 Jan 1, In : Journal of the Physical Society of Japan. 87, 7, 074703.

Research output: Contribution to journalArticle

selenides
chalcogenides
antimony
thermal conductivity
crystal structure
2017
1 Citation (Scopus)

Electronic structure of the iron-based superconductor (La,Eu)FeAsO1-xFx investigated by laser photoemission spectroscopy

Malaeb, W., Awad, R., Hibino, T., Kamihara, Y., Kondo, T. & Shin, S., 2017 Jun 30, (Accepted/In press) In : Physica B: Condensed Matter.

Research output: Contribution to journalArticle

Laser spectroscopy
Photoelectron spectroscopy
Electronic structure
photoelectric emission
electronic structure
2016
11 Citations (Scopus)

Crystal Structure, Electronic Structure, and Photocatalytic Activity of Oxysulfides: La2Ta2ZrS2O8, La2Ta2TiS2O8, and La2Nb2TiS2O8

Goto, Y., Seo, J., Kumamoto, K., Hisatomi, T., Mizuguchi, Y., Kamihara, Y., Katayama, M., Minegishi, T. & Domen, K., 2016 Apr 18, In : Inorganic Chemistry. 55, 7, p. 3674-3679 6 p.

Research output: Contribution to journalArticle

Electronic structure
Energy gap
Crystal structure
Ions
electronic structure
4 Citations (Scopus)

Discovery of the Pt-Based Superconductor LaPt5As

Fujioka, M., Ishimaru, M., Shibuya, T., Kamihara, Y., Tabata, C., Amitsuka, H., Miura, A., Tanaka, M., Takano, Y., Kaiju, H. & Nishii, J., 2016 Aug 10, In : Journal of the American Chemical Society. 138, 31, p. 9927-9934 8 p.

Research output: Contribution to journalArticle

Superconducting materials
Pressure
Crystal structure
Sintering
Transition Temperature
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
15 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
7 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
1 Citation (Scopus)

STM/STS study of the superconducting gap in SmFeAsO1-xFx

Kawashima, Y., Ichimura, K., Katono, K., Kurosawa, T., Oda, M., Tanda, S., Kamihara, Y. & Hosono, H., 2015, In : Solid State Communications. 204, p. 33-36 4 p.

Research output: Contribution to journalArticle

space transportation system
Doping (additives)
Electron tunneling
Superconductivity
electron tunneling
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
28 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
42 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
16 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
8 Citations (Scopus)
critical point
fermions
tuning
iron
retarding
6 Citations (Scopus)
activation energy
density functional theory
electronic structure
gradients
approximation

Homogeneous coexistence and phase segregation in 1111 iron-based pnictides studied via NMR

Fujiwara, N., Kamihara, Y., Matsuishi, S. & Hosono, H., 2013 Jul, In : Journal of the Korean Physical Society. 62, 12, p. 2004-2006 3 p.

Research output: Contribution to journalArticle

Group 5A compounds
domes
phase diagrams
iron
nuclear magnetic resonance
1 Citation (Scopus)

Homogeneous coexistence in CaFe1-x Co x AsF and phase segregation in LaFeAsO1-x F x studied via NMR

Fujiwara, N., Matsuishi, S., Kamihara, Y. & Hosono, H., 2013 Aug, In : Journal of Superconductivity and Novel Magnetism. 26, 8, p. 2689-2692 4 p.

Research output: Contribution to journalArticle

Superconductivity
Phase diagrams
Nuclear magnetic resonance
nuclear magnetic resonance
S waves
6 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
6 Citations (Scopus)

Modulation of critical current density in polycrystalline boron-doped diamond by surface modification

Natsui, K., Yamamoto, T., Watanabe, T., Kamihara, Y. & Einaga, Y., 2013 Sep, In : Physica Status Solidi (B) Basic Research. 250, 9, p. 1943-1949 7 p.

Research output: Contribution to journalArticle

Diamond
Boron
Surface treatment
Diamonds
critical current
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
8 Citations (Scopus)
Superconductivity
Metals
Doping (additives)
Nuclear magnetic resonance
nuclear magnetic resonance
3 Citations (Scopus)

Current status of iron-based superconductors

Kamihara, Y., 2012 Mar, In : Hyperfine Interactions. 208, 1-3, p. 123-131 9 p.

Research output: Contribution to journalArticle

iron
Magnetic separation
Phase separation
Phase diagrams
Magnetization
15 Citations (Scopus)

Enhanced anisotropic spin fluctuations below tetragonal-to-orthorhombic transition in LaFeAs(O 1-xF x) probed by 75As and 139La NMR

Nakai, Y., Kitagawa, S., Iye, T., Ishida, K., Kamihara, Y., Hirano, M. & Hosono, H., 2012 Apr 4, In : Physical Review B - Condensed Matter and Materials Physics. 85, 13, 134408.

Research output: Contribution to journalArticle

Spin fluctuations
Superconducting transition temperature
Anisotropy
transition temperature
Nuclear magnetic resonance
17 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
13 Citations (Scopus)

Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0: 075)

Takahashi, H., Kamihara, Y., Koguchi, H., Atou, T., Hosono, H., Katayama, I., Takeda, J., Kitajima, M. & Nakamura, K. G., 2011 Jan, In : Journal of the Physical Society of Japan. 80, 1, 013707.

Research output: Contribution to journalArticle

phonons
iron
chirp
softening
electro-optics
42 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
20 Citations (Scopus)

Metamagnetic behavior and Kondo breakdown in heavy-fermion CeFePO

Kitagawa, S., Ikeda, H., Nakai, Y., Hattori, T., Ishida, K., Kamihara, Y., Hirano, M. & Hosono, H., 2011 Dec 29, In : Physical Review Letters. 107, 27, 277002.

Research output: Contribution to journalArticle

breakdown
fermions
Fermi surfaces
iron
anisotropy
1 Citation (Scopus)

NMR study under pressure on the La1111 pnictides, LaFeAsO 1-x F x

Fujiwara, N., Nakano, T., Okada, H., Takahashi, H., Kamihara, Y., Hirano, M. & Hosono, H., 2011 Apr, In : Journal of Superconductivity and Novel Magnetism. 24, 3, p. 1145-1148 4 p.

Research output: Contribution to journalArticle

Group 5A compounds
Nuclear magnetic resonance
nuclear magnetic resonance
Superconductivity
Superconducting transition temperature
2010

75As-nuclear magnetic relaxation on LaFeAsO1-xF x under pressure

Fujiwara, N., Tatsumi, K., Nakano, T., Okada, H., Takahashi, H., Kamihara, Y., Hirano, M. & Hosono, H., 2010 Dec, In : Physica C: Superconductivity and its Applications. 470, SUPPL.1

Research output: Contribution to journalArticle

Magnetic relaxation
magnetic relaxation
DOS
Spin fluctuations
augmentation
6 Citations (Scopus)

Anomalous He-gas high-pressure studies on superconducting LaO 1-xFxFeAs

Bi, W., Banks, H. B., Schilling, J. S., Takahashi, H., Okada, H., Kamihara, Y., Hirano, M. & Hosono, H., 2010 Feb 9, In : New Journal of Physics. 12, 023005.

Research output: Contribution to journalArticle

gas pressure
shear stress
histories
magnetic permeability
sensitivity
21 Citations (Scopus)

Electronic and lattice structures in SmFeAsO1-x Fx probed by x-ray absorption spectroscopy

Zhang, C. J., Oyanagi, H., Sun, Z. H., Kamihara, Y. & Hosono, H., 2010 Mar 17, In : Physical Review B - Condensed Matter and Materials Physics. 81, 9, 094516.

Research output: Contribution to journalArticle

Absorption spectroscopy
x ray absorption
x ray spectroscopy
absorption spectroscopy
electronic structure
70 Citations (Scopus)

Electronic and magnetic phase diagram of superconductors, SmFeAsO 1-xFx

Kamihara, Y., Nomura, T., Hirano, M., Kim, J. E., Kato, K., Takata, M., Kobayashi, Y., Kitao, S., Higashitaniguchi, S., Yoda, Y., Seto, M. & Hosono, H., 2010 Mar 5, In : New Journal of Physics. 12, 033005.

Research output: Contribution to journalArticle

magnetic moments
phase diagrams
forward scattering
sublattices
electronics
2 Citations (Scopus)

Electron tunneling using STM/STS on iron-based oxypnictides

Kawashima, Y., Ichimura, K., Kurosawa, T., Oda, M., Tanda, S., Takahashi, H., Okada, H., Kamihara, Y. & Hosono, H., 2010 Dec, In : Physica C: Superconductivity and its Applications. 470, SUPPL.1

Research output: Contribution to journalArticle

space transportation system
Electron tunneling
electron tunneling
Iron
iron
32 Citations (Scopus)

Enhancement of the critical temperature of the pnictide superconductor LaFeAsO1-xFx studied via75As NMR under pressure

Nakano, T., Fujiwara, N., Tatsumi, K., Okada, H., Takahashi, H., Kamihara, Y., Hirano, M. & Hosono, H., 2010 Mar 22, In : Physical Review B - Condensed Matter and Materials Physics. 81, 10, 100510.

Research output: Contribution to journalArticle

Group 5A compounds
Superconducting materials
critical temperature
Nuclear magnetic resonance
nuclear magnetic resonance