Publications

2017

1.Ce 4f electronic states of CeO1−xFxBiS2 studied by soft x-ray photoemission spectroscopy
Takanori Wakita, Kensei Terashima, Takahiro Hamada, Hirokazu Fujiwara, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Galif Kutluk, Masanori Nagao, Satoshi Watauchi, Isao Tanaka, Satoshi Demura, Hiroyuki Okazaki, Yoshihiko Takano, Yoshikazu Mizuguchi, Osuke Miura, Kozo Okada, Yuji Muraoka, and Takayoshi Yokoya
Phys. Rev. B 95, 085109 (2017).

2.Electronic structure of K-doped picene film on HOPG
T. Wakita, H. Okazaki, T. Jabuchi, H. Hamada, Y. Muraoka, T. Yokoya
Journal of Physics-Condensed Matter 29, 064001 (2017).

3.Evolution of Eu valence and superconductivity in layered Eu0.5La0.5FBiS2-xSex system
Y. Mizuguchi, E. Paris, T. Wakita, G. Jinno, A. Puri, K. Terashima, B. Joseph, O. Miura, T. Yokoya, N.L. Saini
Physical Review B 95, 064515 (2017).

4.Evolution of the remnant Fermi-surface state in the lightly doped correlated spin-orbit insulator Sr2-xLaxIrO4
K. Terashima, M. Sunagawa, H. Fujiwara, T. Fukura, M. Fujii, K. Okada, K. Horigane, K. Kobayashi, R. Horie, J. Akimitsu, E. Golias, D. Marchenko, A. Varykhalov, N. L. Saini, T. Wakita, Y. Muraoka, T. Yokoya
Physical Review B 96, 041106 (2017).

5.Effect of aliovalent dopants on the kinetics of spinodal decomposition in rutile-type TiO2-VO2
Makoto Ogata, Kenji Kadowaki, Masataka Ijiri, Masataka, Yoshito Takemoto, Kensei Terashima, Takanori Wakita, Takayoshi Yokoya, Yuji Muraoka
Journal of the European Ceramic Society 37, 3177-3183 (2017).

6.The electronic structure of Ag1-xSn1+xSe2 (x=0.0, 0.1, 0.2, 0.25 and 1.0)
T. Wakita, E. Paris, K. Kobayashi, K. Terashima, M.Y. Hacisalihoglu, T. Ueno, F. Bondino, E. Magnano, I. Pis, L. Olivi, J. Akimitsu, Y. Muraoka, T. Yokoya, N.L. Saini
Physical Chemistry Chemical Physics 19, 26672-26678 (2017).

7.Observation of intrinsic half-metallic behavior of CrO2 (100) epitaxial films by bulk-sensitive spin-resolved PES
H. Fujiwara, M. Sunagawa, K. Terashima, T. Kittaka, T. Wakita, Y. Muraoka, and T. Yokoya
J. Electron Spectrosc. Relat. Phenom. 220, 46 (2017).

2016

1. Preparation of TaO2 thin films using NbO2 template layers by a pulsed laser deposition technique
Y. Muraoka, Y. Fujimoto, M. Kameoka, Y. Matsuura, M. Sunagawa, K. Terashima, T. Wakita, T. Yokoya
Thin Solid Films 599, 125 (2016).

2. Comparaive ARPES studied of LaOxF1-xBiS2(x=0.23 and 0.46)
K Terashima, T Wakita, M Sunagawa, H Fujiwara, T Nagayama, K Ono, H Kumigashira, M Nagao, S Watauchi, I Tanaka, H Okazaki, Y Takano, Y Mizuguchi, H Usui, K Kuroki, Y Muraoka and T Yokoya
J. Phys: Conference Series 683, 012002 (2016).

3. Bulk sensitive angle-resolved photoelectron spectroscopy on Nd(O,F)BiS2
K Terashima, J Sonoyama, M Sunagawa, H Fujiwara, T Nagayama, T Muro, M Nagao, S Watauchi, I Tanaka, H Okazaki, Y Takano, Y Mizuguchi, H Usui, K Suzuki, K Kuroki, T Wakita, Y Muraoka and T Yokoya
J. Phys: Conference Series 683, 012003 (2016)

4. Observation of a Hidden Hole-Like Band Approaching the Fermi Level in K-Doped Iron Selenide Superconductor
Masanori Sunagawa, Kensei Terashima, Takahiro Hamada, Hirokazu Fujiwara, Tetsushi Fukura, Aya Takeda, Masashi Tanaka, Hiroyuki Takeya, Yoshihiko Takano, Masashi Arita, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi, Katsuhiro Suzuki, Hidetomo Usui, Kazuhiko Kuroki, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya
J. Phys. Soc. Jpn. 85, 073704 (2016).

5.Determination of the local structure of CsBi4-xPbxTe6 (x = 0, 0.5) by X-ray absorption spectroscopy
Takanori Wakita, Eugenio Paris, Takashi Mizokawa, Muammer Yasin Hacisalihoğlu, Kensei Terashima, Hiroyuki Okazaki, Olivier Proux, Isabelle Kieffer, Eric Lahera, William Del Net, Luca Olivi, Yoshihiko Takano, Yuji Muraoka, Takayoshi Yokoya and Naurang L. Saini
Phys. Chem. Chem. Phys., 18, 25136 (2016).

2015

1. Signature of high Tc above 25 K in high quality superconducting diamond
Hiroyuki Okazaki, Takanori Wakita, Takayuki Muro, Tetsuya Nakamura, Yuji Muraoka, Takayoshi Yokoya, Shin-ichiro Kurihara, Hiroshi Kawarada, Tamio Oguchi, Yoshihiko Takano
Appl. Phys. Lett. 106, 052601 (2015).

2. Comparative ARPES Study on Iron-Platinum-Arsenide Superconductor Ca10(Pt4As8)(Fe2-xPtxAs2)5 (x = 0.25 and 0.42)
Masanori Sunagawa, Rikiya Yoshida, Toshihiko Ishiga, Koji Tsubota, Taihei Jabuchi, Junki Sonoyama, Satomi Kakiya, Daisuke Mitsuoka, Kazutaka Kudo, Minoru Nohara, Kanta Ono, Hiroshi Kumigashira, Tamio Oguchi, Takanori Wakita, Yuji Muraoka, and Takayoshi Yokoya
J. Phys. Soc. Jpn. 84, 055001 (2015).

3. Intrinsic spin polarized electronic structure of CrO2 epitaxial film revealedby bulk-sensitive spin-resolved photoemission spectroscopy
Hirokazu Fujiwara, Masanori Sunagawa, Kensei Terashima, Tomoko Kittaka, Takanori Wakita, Yuji Muraoka, and Takayoshi Yokoya
Appl. Phys. Lett. 106, 202404 (2015).

2014

1. Soft x-ray photoemission study of new BiS2-layered superconductor LaO1-xFxBiS2
S. Nagira, J. Sonoyama, T. Wakita, M.Sunagawa,Y. Izumi, T. Muro, H. Kumigashira, M.Oshima, K. Deguchi, H. Okazaki, Y. Takano, O. Miura,Y. Mizuguchi, K. Suzuki, H. Usui, K. Kuroki, K. Okada, Y. Muraoka, and T. Yokoya
J. Phys. Soc. Jpn. 83, 033703 (2014).

2. Persistent insulator to metal transition of a VO2 thin film by soft x-ray irradiation
Y. Muraoka, H. Nagao, S. Katayama, T. Wakita, M. Hirai, T. Yokoya, H. Kumigashira, and M. Oshima
Jpn. J. Appl. Phys. 53, 05FB09 (2014).

3. Electronic Structures of CeM2Al10 (M = Fe, Ru, and Os) Studied by Soft X-ray Resonant and High-Resolution Photoemission Spectroscopies
Toshihiko Ishiga, Takanori Wakita, Rikiya Yoshida, Hiroyuki Okazaki, Koji Tsubota, Masanori Sunagawa, Kanta Uenaka, Kozo Okada, Hiroshi Kumigashira, Masaharu Oshima, Keisuke Yutani, Yuji Muro, Toshiro Takabatake, Yuji Muraoka, and Takayoshi Yokoya
J. Phys. Soc. Jpn. 83, 094717 (2014).

4. Characteristic two-dimensional Fermi surface topology of high-Tc iron-based superconductors
Masanori Sunagawa, Toshihiko Ishiga, Koji Tsubota, Taihei Jabuchi, Junki Sonoyama, Keita Iba, Kazutaka Kudo, Minoru Nohara, Kanta Ono, Hiroshi Kumigashira, Tomohiro Matsushita, Masashi Arita, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi, Takanori Wakita, Yuji Muraoka & Takayoshi Yokoya
Scientific Reports 4, 4381 (2014).

5. Proximity to Fermi-surface topological change in superconducting LaO0.54F0.46BiS2
Kensei Terashima, Junki Sonoyama, Takanori Wakita, Masanori Sunagawa, Kanta Ono, Hiroshi Kumigashira, Takayuki Muro, Masanori Nagao, Satoshi Watauchi, Isao Tanaka, Hiroyuki Okazaki, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguchi, Hidetomo Usui, Katsuhiro Suzuki, Kazuhiko Kuroki, Yuji Muraoka, and Takayoshi Yokoya
Phys. Rev. B 90, 220512 (2014).

6. Ultrafast photoinduced transition of an insulating VO2 thin film into a nonrutile metallic state
Rikiya Yoshida, Takashi Yamamoto, Yukiaki Ishida, Hiroki Nagao, Tsubasa Otsuka, Kuninari Saeki, Yuji Muraoka, Ritsuko Eguchi, Kyoko Ishizaka, Takayuki Kiss, Shuntaro Watanabe, Teruto Kanai, Jiro Itatani, and Shik Shin
Phys. Rev. B 89, 205114 (2014).

2013

1. Collapsed tetragonal phase transition of Ca(Fe1-xRhx)2As2 studied with photoemission spectroscopy
Koji Tsubota, Takanori Wakita, Hiroki Nagao, Chiaki Hiramatsu, Toshihiko Ishiga, Masanori Sunagawa, Kanta Ono, Hiroshi Kumigashira, Masataka Danura, Kazutaka Kudo, Minoru Nohara, Yuji Muraoka, Takayoshi Yokoya
J. Phys. Soc. Jpn. 82, 073705 (2013)

2. Spinodal decomposition in the TiO2-VO2 system
Z. Hiroi, H. Hayamizu, T. Yoshida, Y. Muraoka, Y. Okamoto, J. Yamaura, and Y. Ueda
Chem. Mater. 25, 2202-2210 (2013).

3. Translational symmetry breaking and gapping of heavy-quasiparticle pocket in URu2Si2
R. Yoshida, K. Tubota, T. Ishiga, M. Sunagawa, J. Sonoyama, D. Aoki, J. Flouquet, T. Wakita, Y. Muraoka, and T. Yokoya
Sci. Rep. 3, 2750/1-6 (2013).

4. Evidence for metallic states in potassium-intercalated picene film on graphite
H. Okazaki, T. Jabuchi, T. Wakita, T. Kato, Y. Muraoka,and T. Yokoya
Phys. Rev. B 88, 245414/1-6 (2013).

2012

1. Effectiveness of a hot-filament chemical vapor deposition method for preparation of a boron-doped superconducting diamond film with higher superconducting transition temperature
T. Doi, T. Fukaishi, C. Hiramatsu, T. Wakita, M. Hirai, Y. Muraoka, T. Yokoya, Y. Kato, Y. Lzumi, T. Muro, Y. Tamenori
Diamond and Related Materials 25, 5-7 (2012).

2. Observation of two fine structures related to the hidden order in the spectral functions of URu2Si2
R. Yoshida, M. Fukui, Y. Haga, E. Yamamoto, Y. Onuki, M. Okawa, W. Malaeb, S. Shin, Y. Muraoka, Yuji, T. Yokoya
Phys. Rev. B 85, 241102 (2012).

3. Comparative photoemission studies on the superconducting gap of the filled skutterudite superconductors LaPt4Ge12 and PrPt4Ge12
Y. Nakamura, H. Okazaki, R. Yoshida, T. Wakita, H. Takeya, K. Hirata, M. Hirai, Y. Muraoka, T. Yokoya
Phys. Rev. B 86, 014521 (2012).

4. Te concentration dependent photoemission and inverse-photoemission study of FeSe1-xTex
T. Yokoya, R. Yoshida, Y. Utsumi, K. Tsubota, H. Okazaki, T. Wakita, Y. Mizuguchi, Y. Takano, T. Muro, Y. Kato, H. Kumigashira, M. Oshima, H. Harima, Y. Aiura, H. Sato, A. Ino, H. Namatame, M. Taniguchi, M. Hirai, Y. Muraoka
Science and Technology of Advanced Materials 13, 054403 (2012).

2011

1. Spectroscopic evidence of the formation of (V,Ti)O2 solid solution in VO2 thinner films grown on TiO2(001) substrates
Y. Muraoka, K. Saeki, R. Eguchi, T. Wakita, M. Hirai, T. Yokoya, and S. Shin
J. Appl. Phys. 109, No. 4, 043702/1-6 (2011).

2. Multiple phosphorus chemical sites in heavily phosphorus-doped diamond
H. Okazaki, R. Yoshida, T. Muro, T. Nakamura, T. Wakita, Y. Muraoka, M. Hirai, H. Kato, S. Yamasaki, Y. Takano, S. Ishii, T. Oguchi, T. Yokoya
Appl. Phys. Lett. 98, 082107 (2011).

3. Synthesis and physical properties of the hollandite-type titanium oxide KxTi8O16C
Y. Muraoka, K. Noami, T. Wakita, M. Hirai, T. Yokoya, Y. Kato, T. Muro, and Y. Tamenori
Phys.Status Solidi C 8, Iss. 2, 555-557 (2011).

4. Photoemission study of electronic structure evolution across the metal-insulator transition of heavily B-doped diamond
H. Okazaki, T. Arakane, K. Sugawara, T. Sato, T. Takahashi, T. Wakita, M. Hirai, Y. Muraoka, Y. Takano, S. Ishii, S. Iruyama, H. Kawarada, and T. Yokoya
Journal of Physics and Chemistry of Solids 72, 582-584 (2011).

5. Ultrahigh-resolution laser photoemission study of URu2Si2 across the hidden-order transition
R. Yoshida, Y. Nakamura, M. Fukui, Y. Haga, E. Yamamoto, Y. Onuki, M. Okawa, S. Shin, M. Hirai, Y. Muraoka, and T. Yokoya
Journal of Physics and Chemistry of Solids 72, 580-581 (2011).


2010

1. Kondo scaling of the pseudogap in CeOs4Sb12 and CeFe4P12
P.A. Rayjada, A. Chainani, M. Matsunami, M. Taguchi, S. Tsuda, T. Yokoya, S. Shin, H. Sugawara and H. Sato
J. Phys-Cond. Mat. 22, 095502 (2010).

2. Room temperature ferromagnetic behavior in the hollandite-typ titanium oxide
K. Noami, Y. Muraoka, T. Wakita, M. Hirai, Y. Kato, T. Muro, Y. Tamenori and T. Yokoya
Journal of Applied Physics 107, 073910 (2010)

3. Angle-resolved photoemission observation of the superconducting-gap minimum and its relation to the nesting vector in the phonon-mediated superconductor YNi2B2C
T. Baba, T. Yokoya, S. Tsuda, T. Watanabe, M. Nohara, H. Takagi, T. Oguchi, and S. Shin
Phys. Rev. B 81, 180509 (2010).

4. Lateral Inhomogeneity in the Electronic Structure of a Conjugated Poly(3-hexylthiophene) Thin Film
K. Kanai, T. Miyazaki, T. Wakita, K. Akaike, T. Yokoya, Y. Ouchi, and K. Seki
Advanced Functional Materials 20, 2046-2052 (2010).

5. Bulk and surface physical properties of a CrO2 thin film prepared from a Cr8O21 precursor
K. Iwai, Y. Muraoka, T. Wakita, M. Hirai, T. Yokoya, Y. Kato, T. Muro, and Y. Tamenori
Journal of Applied Physics 108, 043916 (2010).

6. Angle-resolved photoemission spectroscopy for VO2 thin films grown on TiO2(001) substrates
Y. Muraoka, K. Saeki, Y. Yao, T. Wakita, M. Hirai, T. Yokoya, R. Eguchi, and S. Shin
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA 181, SI 249-251 (2010).

7. Signature of hidden order and evidence for periodicity modulation in URu2Si2
R. Yoshida, Y. Nakamura, M. Fukui, Y. Haga, E. Yamamoto, Y. Onuki, M. Okawa, S. Shin, M. Hirai, Y. Muraoka, and T. Yokoya
Phys. Rev. B 82, 205108 (2010).

8. Electronic structure of pristine and K-doped picene: Nonrigid band change and its implication for electron-intramolecular-vivration interaction
H. Okazaki, T. Wakita, T. Muro, Y. Kaji, X. Lee, H. Mitamura, N. Kawasaki, Y. Kubozono, Y. Yamanari, T. kambe, T. Kato, M. Hirai, Y. Muraoka, and T. Yokoya
Phys. Rev. B 82, 195114 (2010).

9. Angle-resolved photoemission study of Si electronic structure: Boron concentration dependence
T. Wakita, H. Okazaki, Y. Takano, M. Hirai, Y. Muraoka, T. Yokoya
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 470, S641-S643 (2010).

10.Photoemission study of Ca-intercalated graphite superconductor CaC6
H. Okazaki, R. Yoshida, K. Iwai, K. Noami, T. Muro, T. Nakamura, T. Wakita, Y. Muraoka, M. Hirai, F. Tomioka, Y. Takano, A. Takenaka, M. Toyoda, T. Oguchi, and T. Yokoya
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 470, S637-S638 (2010).

11.Electronic Structure of the Novel Filled Skutterudite PrPt4Ge12 Superconductor
Y. Nakamura, H. Okazaki, R. Yoshida, T. Wakita, M. Hirai, Y. Muraoka, H. Takeya, K. Hirata, H. Kumigashira, M. Oshima, and T. Yokoya
J. Phys. Soc. Jpn. 79, 124701/1-4 (2010).

12.Analysis on photoemission spectrum of superconducting FeSe
R. Yoshida, T. Wakita, H. Okazaki, Y. Mizuguchi, S. Tsuda, Y. Takano, H. Takeya, K. Hirata, T. Muro, M. Okawa, K. Ishizaka, S. Shin, H. Harima, M. Hirai, Y. Muraoka, and T. Yokoya
Physica C-Superconductivity and its Applications 470, S389-S390 (2010).

2009

1. Soft X-Ray Core-Level Photoemission Study of Boron Sites in Heavily Boron-Doped Diamond Films
H. Okazaki, R. Yoshida, T. Muro, T. Wakita, M. Hirai, Y. Muraoka, Y. Takano, S. Iriyama, H. Kawarada, T. Oguchi and T. Yokoya
J. Phys. Soc. Jpn. 78, 034703/1-4 (2009).

2. Superconducting Gap and Valence Band of Mg10Ir19B16 Studied by Laser and Synchrotron Photoemission Spectroscopy
R. Yoshida, H. Okazaki, K. Iwai, K. Noami, T. Muro, M. Okawa, K. Ishizaka, S. Shin, Z. Li, J.L. Luo, G.-q. Zheng, T. Oguchi, M. Hirai, Y. Muraoka, and T. Yokoya
J. Phys. Soc. Jpn. 78, 034705/1-4 (2009).

3. The electronic structure of Ca-intercalated superconducting graphite CaC6
H. Okazaki, R. Yoshida, K. Iwaia, K. Noami, T. Muro, T. Nakamura, T. Wakita, Y. Muraoka, M. Hirai, F. Tomioka, Y. Takano, A. Takenaka, M. Toyoda, T. Oguchi, T. Yokoya
Physica C 469, 1041-1044 (2009).

4. Electronic Structure of Superconducting FeSe Studied by High-Resolution Photoemission Spectroscopy
R. Yoshida, T. Wakita, H. Okazaki, Y. Mizuguchi, S. Tsuda, Y. Takano, H.Takeya, K. Hirata, T. Muro, M. Okawa, K. Ishizaka, S. Shin, H. Harima, M. Hirai, Y. Muraoka, and T. Yokoya
J. Phys. Soc. Jpn. 78, 034708/1-4 (2009).

5. Effect of UV light irradiation in SnO2 thin film
N. Takubo, Y. Muraoka and Z. Hiroi
J. Phys. : Conference Series 148, 012025/1-3 (2009).

6. Conductivity switching by ultraviolet light in tin dioxide thin films
N. Takubo, Y. Muraoka and Z. Hiroi
Applied Physics Express 2, 045501/1-3 (2009).

7. Photoinduced conductivity in tin dioxide thin films
Y. Muraoka, N. Takubo, and Z. Hiroi
J. Appl. Phys. 105, 103702/1-7 (2009).

8. Spectroscopic evidence of the existence of substantial Ca 3d derived states at the Fermi level in the Ca-intercalated graphite superconductor CaC6
H. Okazaki, R. Yoshida, K. Iwai, K. Noami, T. Muro, T. Nakamura, T. Wakita, Y. Muraoka, M. Hirai, F. Tomioka, Y. Takano, A. Takenaka, M. Toyoda, T. Oguchi, and T. Yokoya
Phys. Rev. B 80, 035420/1-5 (2009).

9. Band dispersion near the Fermi level forVO2 thin films grown on TiO2(001) substrates
K. Saeki, T. Wakita, Y. Muraoka, M. Hirai, T. Yokoya, R. Eguchi, and S. Shin
Phys. Rev. B 80, 125406/1-5 (2009).



Complete List of Publications