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  • Takayoshi Yokoya
2011

Development of a soft X-ray angle-resolved photoemission system applicable to 100 m crystals

Muro, T., Kato, Y., Matsushita, T., Kinoshita, T., Watanabe, Y., Okazaki, H., Yokoya, T., Sekiyama, A. & Suga, S., Nov 2011, In : Journal of Synchrotron Radiation. 18, 6, p. 879-884 6 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Electronic structure of U(Ru1-xRhx) 2Si2 studied by laser angle-resolved photoemission spectroscopy

Yoshida, R., Nakamura, Y., Fukui, M., Haga, Y., Yamamoto, E., Onuki, Y., Okawa, M., Shin, S., Hirai, M., Muraoka, Y. & Yokoya, T., Jan 1 2011, In : Journal of Physics: Conference Series. 273, 1, 012021.

Research output: Contribution to journalArticle

Multiple phosphorus chemical sites in heavily phosphorus-doped diamond

Okazaki, H., Yoshida, R., Muro, T., Nakamura, T., Wakita, T., Muraoka, Y., Hirai, M., Kato, H., Yamasaki, S., Takano, Y., Ishii, S., Oguchi, T. & Yokoya, T., Feb 21 2011, In : Applied Physics Letters. 98, 8, 082107.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Photoemission study of electronic structure evolution across the metalinsulator transition of heavily B-doped diamond

Okazaki, H., Arakane, T., Sugawara, K., Sato, T., Takahashi, T., Wakita, T., Hirai, M., Muraoka, Y., Takano, Y., Ishii, S., Iriyama, S., Kawarada, H. & Yokoya, T., May 1 2011, In : Journal of Physics and Chemistry of Solids. 72, 5, p. 582-584 3 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Photoemission study of Rh17S15 superconductor

Fukui, M., Yoshida, R., Nakamura, Y., Kato, Y., Muro, T., Settai, R., Onuki, Y., Harima, H., Hirai, M., Muraoka, Y. & Yokoya, T., Jul 1 2011, In : journal of the physical society of japan. 80, SUPPL. A, SA111.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Preparation of the CrO2 thin films using a Cr8O 21 precursor

Muraoka, Y., Iwai, K., Yoshida, S., Wakita, T., Hirai, M., Yokoya, T., Kato, Y., Muro, T. & Tamenori, Y., Sep 30 2011, Oxide Nanoelectronics. p. 87-92 6 p. (Materials Research Society Symposium Proceedings; vol. 1292).

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

1 Citation (Scopus)

Spectroscopic evidence of the formation of (V,Ti)O2 solid solution in VO2 thinner films grown on TiO2(001) substrates

Muraoka, Y., Saeki, K., Eguchi, R., Wakita, T., Hirai, M., Yokoya, T. & Shin, S., Feb 15 2011, In : Journal of Applied Physics. 109, 4, 043702.

Research output: Contribution to journalArticle

18 Citations (Scopus)

Synthesis and physical properties of the hollandite-type titanium oxide KxTi8O16

Muraoka, Y., Noami, K., Wakita, T., Hirai, M., Yokoya, T., Kayo, Y., Muro, T. & Tamenori, Y., Feb 1 2011, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 8, 2, p. 555-557 3 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Ultrahigh-resolution laser photoemission study of URu2Si 2 across the hidden-order transition

Yoshida, R., Nakamura, Y., Fukui, M., Haga, Y., Yamamoto, E., Nuki, Y., Okawa, M., Shin, S., Hirai, M., Muraoka, Y. & Yokoya, T., May 2011, In : Journal of Physics and Chemistry of Solids. 72, 5, p. 580-581 2 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2012

Comparative photoemission studies on the superconducting gap of the filled skutterudite superconductors LaPt 4Ge 12 and PrPt 4Ge 12

Nakamura, Y., Okazaki, H., Yoshida, R., Wakita, T., Takeya, H., Hirata, K., Hirai, M., Muraoka, Y. & Yokoya, T., Jul 26 2012, In : Physical Review B - Condensed Matter and Materials Physics. 86, 1, 014521.

Research output: Contribution to journalArticle

19 Citations (Scopus)

Effectiveness of a hot-filament chemical vapor deposition method for preparation of a boron-doped superconducting diamond film with higher superconducting transition temperature

Doi, T., Fukaishi, T., Hiramatsu, C., Wakita, T., Hirai, M., Muraoka, Y., Yokoya, T., Kato, Y., Izumi, Y., Muro, T. & Tamenori, Y., May 1 2012, In : Diamond and Related Materials. 25, p. 5-7 3 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Observation of two fine structures related to the hidden order in the spectral functions of URu 2Si 2

Yoshida, R., Fukui, M., Haga, Y., Yamamoto, E., Onuki, Y., Okawa, M., Malaeb, W., Shin, S., Muraoka, Y. & Yokoya, T., Jun 12 2012, In : Physical Review B - Condensed Matter and Materials Physics. 85, 24, 241102.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Surface physical property of the CrO 2 thin films prepared using a closed chemical vapor deposition method

Muraoka, Y., Yoshida, S., Wakita, T., Hirai, M. & Yokoya, T., Aug 20 2012, Functional Metal Oxide Nanostructures. p. 17-22 6 p. (Materials Research Society Symposium Proceedings; vol. 1406).

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

Te concentration dependent photoemission and inverse-photoemission study of FeSe1-xTex

Yokoya, T., Yoshida, R., Utsumi, Y., Tsubota, K., Okazaki, H., Wakita, T., Mizuguchi, Y., Takano, Y., Muro, T., Kato, Y., Kumigashira, H., Oshima, M., Harima, H., Aiura, Y., Sato, H., Ino, A., Namatame, H., Taniguchi, M., Hirai, M. & Muraoka, Y., Oct 1 2012, In : Science and Technology of Advanced Materials. 13, 5, 054403.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2013

Collapsed tetragonal phase transition of Ca(Fe1-xRh x)2As2 studied by photoemission spectroscopy

Tsubota, K., Wakita, T., Nagao, H., Hiramatsu, C., Ishiga, T., Sunagawa, M., Ono, K., Kumigashira, H., Danura, M., Kudo, K., Nohara, M., Muraoka, Y. & Yokoya, T., Jul 1 2013, In : journal of the physical society of japan. 82, 7, 073705.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Evidence for metallic states in potassium-intercalated picene film on graphite

Okazaki, H., Jabuchi, T., Wakita, T., Kato, T., Muraoka, Y. & Yokoya, T., Dec 11 2013, In : Physical Review B - Condensed Matter and Materials Physics. 88, 24, 245414.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Magnetoelectric effect driven by magnetic domain modification in LuFe 2O4

Kambe, T., Fukada, Y., Kano, J., Nagata, T., Okazaki, H., Yokoya, T., Wakimoto, S., Kakurai, K. & Ikeda, N., Mar 14 2013, In : Physical Review Letters. 110, 11, 117602.

Research output: Contribution to journalArticle

21 Citations (Scopus)

Translational Symmetry Breaking and Gapping of Heavy-Quasiparticle Pocket in URu 2 Si 2

Yoshida, R., Tsubota, K., Ishiga, T., Sunagawa, M., Sonoyama, J., Aoki, D., Flouquet, J., Wakita, T., Muraoka, Y. & Yokoya, T., Oct 14 2013, In : Scientific reports. 3, 2750.

Research output: Contribution to journalArticle

15 Citations (Scopus)
2014

Characteristic two-dimensional Fermi surface topology of high-Tc iron-based superconductors

Sunagawa, M., Ishiga, T., Tsubota, K., Jabuchi, T., Sonoyama, J., Iba, K., Kudo, K., Nohara, M., Ono, K., Kumigashira, H., Matsushita, T., Arita, M., Shimada, K., Namatame, H., Taniguchi, M., Wakita, T., Muraoka, Y. & Yokoya, T., Mar 14 2014, In : Scientific reports. 4, 4381.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Electronic structures of CeM2Al10 (M = Fe, Ru, and Os) studied by soft X-ray resonant and high-resolution photoemission spectroscopies

Ishiga, T., Wakita, T., Yoshida, R., Okazaki, H., Tsubota, K., Sunagawa, M., Uenaka, K., Okada, K., Kumigashira, H., Oshima, M., Yutani, K., Muro, Y., Takabatake, T., Muraoka, Y. & Yokoya, T., Sep 15 2014, In : journal of the physical society of japan. 83, 9, 094717.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Persistent insulator-to-metal transition of a VO2 thin film induced by soft X-ray irradiation

Muraoka, Y., Nagao, H., Katayama, S., Wakita, T., Hirai, M., Yokoya, T., Kumigashira, H. & Oshima, M., May 2014, In : Japanese Journal of Applied Physics. 53, 5 SPEC. ISSUE 1, 05FB09.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Pressure-dependent magnetization and magnetoresistivity studies on tetragonal FeS (mackinawite): Revealing its intrinsic metallic character

Denholme, S. J., Okazaki, H., Demura, S., Deguchi, K., Fujioka, M., Yamaguchi, T., Takeya, H., Elmassalami, M., Fujiwara, H., Wakita, T., Yokoya, T. & Takano, Y., Oct 1 2014, In : Science and Technology of Advanced Materials. 15, 5, 055007.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Proximity to Fermi-surface topological change in superconducting la O0.54 F0.46Bi S2

Terashima, K., Sonoyama, J., Wakita, T., Sunagawa, M., Ono, K., Kumigashira, H., Muro, T., Nagao, M., Watauchi, S., Tanaka, I., Okazaki, H., Takano, Y., Miura, O., Mizuguchi, Y., Usui, H., Suzuki, K., Kuroki, K., Muraoka, Y. & Yokoya, T., Dec 22 2014, In : Physical Review B - Condensed Matter and Materials Physics. 90, 22, 220512.

Research output: Contribution to journalArticle

23 Citations (Scopus)

Soft x-ray photoemission study of new BiS2-layered superconductor LaO1-xFxBiS2

Nagira, S., Sonoyama, J., Wakita, T., Sunagawa, M., Izumi, Y., Muro, T., Kumigashira, H., Oshima, M., Deguchi, K., Okazaki, H., Takano, Y., Miura, O., Mizuguchi, Y., Suzuki, K., Usui, H., Kuroki, K., Okada, K., Muraoka, Y. & Yokoya, T., Mar 15 2014, In : journal of the physical society of japan. 83, 3, 033703.

Research output: Contribution to journalArticle

21 Citations (Scopus)
2015

Comparative ARPES study on iron-platinum-arsenide superconductor Ca10(Pt4As8)(Fe2-xPtxAs2)5 (x = 0.25 and 0.42)

Sunagawa, M., Yoshida, R., Ishiga, T., Tsubota, K., Jabuchi, T., Sonoyama, J., Kakiya, S., Mitsuoka, D., Kudo, K., Nohara, M., Ono, K., Kumigashira, H., Oguchi, T., Wakita, T., Muraoka, Y. & Yokoya, T., May 15 2015, In : journal of the physical society of japan. 84, 5, 055001.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Intrinsic spin polarized electronic structure of CrO2 epitaxial film revealed by bulk-sensitive spin-resolved photoemission spectroscopy

Fujiwara, H., Sunagawa, M., Terashima, K., Kittaka, T., Wakita, T., Muraoka, Y. & Yokoya, T., May 18 2015, In : Applied Physics Letters. 106, 20, 202404.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Signature of high T c above 25 K in high quality superconducting diamond

Okazaki, H., Wakita, T., Muro, T., Nakamura, T., Muraoka, Y., Yokoya, T., Kurihara, S. I., Kawarada, H., Oguchi, T. & Takano, Y., Feb 2 2015, In : Applied Physics Letters. 106, 5, 052601.

Research output: Contribution to journalArticle

37 Citations (Scopus)

Superconductivity in aromatic hydrocarbons

Kubozono, Y., Goto, H., Jabuchi, T., Yokoya, T., Kambe, T., Sakai, Y., Izumi, M., Zheng, L., Hamao, S., Nguyen, H. L. T., Sakata, M., Kagayama, T. & Shimizu, K., Jul 15 2015, In : Physica C: Superconductivity and its applications. 514, p. 199-205 7 p.

Research output: Contribution to journalReview article

19 Citations (Scopus)
2016

Bulk sensitive angle-resolved photoelectron spectroscopy on Nd(O,F)BiS2

Terashima, K., Sonoyama, J., Sunagawa, M., Fujiwara, H., Nagayama, T., Muro, T., Nagao, M., Watauchi, S., Tanaka, I., Okazaki, H., Takano, Y., Mizuguchi, Y., Usui, H., Suzuki, K., Kuroki, K., Wakita, T., Muraoka, Y. & Yokoya, T., Feb 5 2016, In : Journal of Physics: Conference Series. 683, 1, 012003.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Comparative ARPES studies of LaOxF1-xBiS2 (x = 0.23 and 0.46)

Terashima, K., Wakita, T., Sunagawa, M., Fujiwara, H., Nagayama, T., Ono, K., Kumigashira, H., Nagao, M., Watauchi, S., Tanaka, I., Okazaki, H., Takano, Y., Mizuguchi, Y., Usui, H., Kuroki, K., Muraoka, Y. & Yokoya, T., Feb 5 2016, In : Journal of Physics: Conference Series. 683, 1, 012002.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Determination of the local structure of CsBi4-: XPbxTe6 (x = 0, 0.5) by X-ray absorption spectroscopy

Wakita, T., Paris, E., Mizokawa, T., Hacisalihoǧlu, M. Y., Terashima, K., Okazaki, H., Proux, O., Kieffer, I., Lahera, E., Del Net, W., Olivi, L., Takano, Y., Muraoka, Y., Yokoya, T. & Saini, N. L., 2016, In : Physical Chemistry Chemical Physics. 18, 36, p. 25136-25142 7 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Emergence of superconductivity in (NH3)y MxMoSe2 (M: Li, Na and K)

Miao, X., Nishiyama, S., Zheng, L., Goto, H., Eguchi, R., Ota, H., Kambe, T., Terashima, K., Yokoya, T., Nguyen, H. T. L., Kagayama, T., Hirao, N., Ohishi, Y., Ishii, H., Liao, Y. F. & Kubozono, Y., Jul 11 2016, In : Scientific Reports. 6, 29292.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Local electronic state in the half-metallic ferromagnet CrO2 investigated by site-selective Cr 53 NMR measurements

Takeda, H., Shimizu, Y., Kobayashi, Y., Itoh, M., Jin-No, T., Isobe, M., Ueda, Y., Yoshida, S., Muraoka, Y. & Yokoya, T., Jun 15 2016, In : Physical Review B - Condensed Matter and Materials Physics. 93, 23, 235129.

Research output: Contribution to journalArticle

9 Citations (Scopus)

Observation of a hidden hole-like band approaching the fermi level in K-doped iron selenide superconductor

Sunagawa, M., Terashima, K., Hamada, T., Fujiwara, H., Fukura, T., Takeda, A., Tanaka, M., Takeya, H., Takano, Y., Arita, M., Shimada, K., Namatame, H., Taniguchi, M., Suzuki, K., Usui, H., Kuroki, K., Wakita, T., Muraoka, Y. & Yokoya, T., Jul 15 2016, In : Journal of the Physical Society of Japan. 85, 7, 073704.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Observation of intrinsic half-metallic behavior of CrO2 (100) epitaxial films by bulk-sensitive spin-resolved PES

Fujiwara, H., Sunagawa, M., Terashima, K., Kittaka, T., Wakita, T., Muraoka, Y. & Yokoya, T., Aug 5 2016, (Accepted/In press) In : Journal of Electron Spectroscopy and Related Phenomena.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Preparation of TaO2 thin films using NbO2 template layers by a pulsed laser deposition technique

Muraoka, Y., Fujimoto, Y., Kameoka, M., Matsuura, Y., Sunagawa, M., Terashima, K., Wakita, T. & Yokoya, T., Jan 29 2016, In : Thin Solid Films. 599, p. 125-132 8 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Temperature dependent local atomic displacements in ammonia intercalated iron selenide superconductor

Paris, E., Simonelli, L., Wakita, T., Marini, C., Lee, J. H., Olszewski, W., Terashima, K., Kakuto, T., Nishimoto, N., Kimura, T., Kudo, K., Kambe, T., Nohara, M., Yokoya, T. & Saini, N. L., Jun 9 2016, In : Scientific Reports. 6, 27646.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2017

Ce 4f electronic states of CeO1-x FxBiS2 studied by soft x-ray photoemission spectroscopy

Wakita, T., Terashima, K., Hamada, T., Fujiwara, H., Minohara, M., Kobayashi, M., Horiba, K., Kumigashira, H., Kutluk, G., Nagao, M., Watauchi, S., Tanaka, I., Demura, S., Okazaki, H., Takano, Y., Mizuguchi, Y., Miura, O., Okada, K., Muraoka, Y. & Yokoya, T., Feb 7 2017, In : Physical Review B. 95, 8, 085109.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Distinct local structure of superconducting Ca10M4As8(Fe2As2)5 (M=Pt,Ir)

Paris, E., Wakita, T., Proux, O., Yokoya, T., Kudo, K., Mitsuoka, D., Kimura, T., Fujimura, K., Nishimoto, N., Ioka, S., Nohara, M., Mizokawa, T. & Saini, N. L., Dec 15 2017, In : Physical Review B. 96, 22, 224507.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Effect of aliovalent dopants on the kinetics of spinodal decomposition in rutile-type TiO2-VO2

Ogata, M., Kadowaki, K., Ijiri, M., Takemoto, Y., Terashima, K., Wakita, T., Yokoya, T. & Muraoka, Y., Aug 1 2017, In : Journal of the European Ceramic Society. 37, 9, p. 3177-3183 7 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Effect of molecular intercalation on the local structure of superconducting Nax(NH3)yMoSe2 system

Simonelli, L., Paris, E., Wakita, T., Marini, C., Terashima, K., Miao, X., Olszewski, W., Ramanan, N., Heinis, D., Kubozono, Y., Yokoya, T. & Saini, N. L., Dec 2017, In : Journal of Physics and Chemistry of Solids. 111, p. 70-74 5 p.

Research output: Contribution to journalArticle

Electronic structure of K-doped picene film on HOPG

Wakita, T., Okazaki, H., Jabuchi, T., Hamada, H., Muraoka, Y. & Yokoya, T., Feb 15 2017, In : Journal of Physics Condensed Matter. 29, 6, 064001.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Electronic structure of self-doped layered Eu3 F4Bi2 S4 material revealed by x-ray absorption spectroscopy and photoelectron spectromicroscopy

Paris, E., Sugimoto, T., Wakita, T., Barinov, A., Terashima, K., Kandyba, V., Proux, O., Kajitani, J., Higashinaka, R., Matsuda, T. D., Aoki, Y., Yokoya, T., Mizokawa, T. & Saini, N. L., Jan 30 2017, In : Physical Review B. 95, 3, 035152.

Research output: Contribution to journalArticle

9 Citations (Scopus)

Evolution of Eu valence and superconductivity in layered Eu0.5La0.5FBiS2-xSex system

Mizuguchi, Y., Paris, E., Wakita, T., Jinno, G., Puri, A., Terashima, K., Joseph, B., Miura, O., Yokoya, T. & Saini, N. L., Feb 27 2017, In : Physical Review B. 95, 6, 064515.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Evolution of the remnant Fermi-surface state in the lightly doped correlated spin-orbit insulator Sr2-xLaxIrO4

Terashima, K., Sunagawa, M., Fujiwara, H., Fukura, T., Fujii, M., Okada, K., Horigane, K., Kobayashi, K., Horie, R., Akimitsu, J., Golias, E., Marchenko, D., Varykhalov, A., Saini, N. L., Wakita, T., Muraoka, Y. & Yokoya, T., Jul 7 2017, In : Physical Review B. 96, 4, 041106.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Inhomogeneous electronic states associated with charge-orbital order/disorder in BaV10O15 probed by photoemission spectromicroscopy

Yoshino, T., Wakita, K., Paris, E., Barinov, A., Kajita, T., Katsufuji, T., Kandyba, V., Sugimoto, T., Yokoya, T., Saini, N. L. & Mizokawa, T., 2017, In : Physical Review B. 96, 11

Research output: Contribution to journalArticle

2 Citations (Scopus)

The electronic structure of Ag1-: XSn1+ xSe2 (x = 0.0, 0.1, 0.2, 0.25 and 1.0)

Wakita, T., Paris, E., Kobayashi, K., Terashima, K., Hacisalihoǧlu, M. Y., Ueno, T., Bondino, F., Magnano, E., Píš, I., Olivi, L., Akimitsu, J., Muraoka, Y., Yokoya, T. & Saini, N. L., 2017, In : Physical Chemistry Chemical Physics. 19, 39, p. 26672-26678 7 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Unusual upper critical field behavior in Nb-doped bismuth selenides

Kobayashi, K., Ueno, T., Fujiwara, H., Yokoya, T. & Akimitsu, J., May 16 2017, In : Physical Review B. 95, 18, 180503.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2018

Determination of the local structure of Sr2-xMxIrO4 (M = K, La) as a function of doping and temperature

Terashima, K., Paris, E., Salas-Colera, E., Simonelli, L., Joseph, B., Wakita, T., Horigane, K., Fujii, M., Kobayashi, K., Horie, R., Akimitsu, J., Muraoka, Y., Yokoya, T. & Saini, N. L., Jan 1 2018, In : Physical Chemistry Chemical Physics. 20, 36, p. 23783-23788 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Direct observation of double valence-band extrema and anisotropic effective masses of the thermoelectric material SnSe

Nagayama, T., Terashima, K., Wakita, T., Fujiwara, H., Fukura, T., Yano, Y., Ono, K., Kumigashira, H., Ogiso, O., Yamashita, A., Takano, Y., Mori, H., Usui, H., Ochi, M., Kuroki, K., Muraoka, Y. & Yokoya, T., Jan 2018, In : Japanese Journal of Applied Physics. 57, 1, 010301.

Research output: Contribution to journalArticle

9 Citations (Scopus)