Search for a systematic electronic structure in oxides with two transition metals
Project/Area Number |
26400321
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics I
|
Research Institution | Tokyo University of Science |
Principal Investigator |
SAITOH Tomohiko 東京理科大学, 理学部第一部応用物理学科, 教授 (30311129)
|
Co-Investigator(Renkei-kenkyūsha) |
OKAWA Mario 東京理科大学, 理学部応用物理学科, 講師 (50609302)
|
Research Collaborator |
HASEGAWA Atushi
NAITO Rie
YOKOBORI Takumi
KONISHI Kohta
KANEKO Takuya
TAKAYAMA Isamu
TAJI Tomoya
OKADA Riku
OGAWA Kohei
SEKINE Sho
TASHIRO Keitaro
IMAI Shun
KATO Ryo
TAKEI Shohei
URUSHIYAMA Sho
OKAMURA Naoya
SHIMOYAMA Ryota
TAKAHASHI Kenta
TAKAHASHI Yuya
TAKAYANAGI Ryohei
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | 遷移金属酸化物 / 電子構造 / 光電子分光 / 軟X線吸収分光 / バンド計算 / 強相関電子系 / 電荷移動エネルギー / 混成 |
Outline of Final Research Achievements |
The objective of this research is to clarify the electronic structure of oxides with 2 transition metals (TM) and to extract the underlying features of their electronic structure. We have obtained the following results: (1) Cu valence can change according to the combination of Cu and TM in Cu delaffosites, (2) The near-Fermi level electronic structure of Co-Rh oxides can be explained by the differences between their charge-transfer energies and hybridizations, (3) Co 2p spectrum of Co double perovskites can be explained by theoretical calculations assuming the high-spin state, (4) Mn 2p spectrum directly reflects the magnetism in the randomness-controlled Mn oxides, and (5) the combination of Y(Pr) and Co should yield the unusual valence deviation of Y(Pr) in Y(Pr)Co oxides. In conclusion, we demonstrated that what kind of 2 TM’s are chosen in oxides and how they are connected are very important to understand valence anomaly and/or unusual physical properties in several 2 TM oxides.
|
Report
(4 results)
Research Products
(48 results)
-
-
[Journal Article] Unusual valence state and metal-insulator transition in BaV10O15 probed by hard x-ray photoemission spectroscopy2017
Author(s)
T. Yoshino, M. Okawa, T. Kajita, S. Dash, R. Shimoyama, K. Takahashi, Y. Takahashi, R. Takayanagi, T. Saitoh, D. Ootsuki, T. Yoshida, E. Ikenaga, N. L. Saini, T. Katsufuji, and T. Mizokawa
-
Journal Title
Phys. Rev. B
Volume: 95
Issue: 7
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Journal Article] Ce Core-Level Spectroscopy, and Magnetic and Electrical Transport Properties of Lightly Ce-Doped YCoO32016
Author(s)
Yoshihiko Kobayashi, Tsuyoshi Koike, Mario Okawa, Ryohei Takayanagi, Shohei Takei, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Akira Yasui, Eiji Ikenaga, Tomohiko Saitoh, and Kichizo Asai
-
Journal Title
J. Phys. Soc. Jpn.
Volume: 85
Issue: 11
Pages: 114704-114704
DOI
NAID
Related Report
Peer Reviewed
-
-
[Journal Article] Nonequilibrium electronic and phonon dynamics of Cu0.17Bi2Se3 investigated by core-level and valence-band time-resolved photoemission spectroscopy2015
Author(s)
T. Yamamoto, Y. Ishida, R. Yoshida, M. Okawa, K. Okazaki, T. Kanai, A. Kikkawa, Y. Taguchi, T. Kiss, K. Ishizaka, N. Ishii, J. Itatani, S. Watanabe, Y. Tokura, T. Saitoh, and S. Shin
-
Journal Title
Phys. Rev. B
Volume: 92
Issue: 12
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
-
-
[Journal Article] Cu-O-Cr Hybridization Effects on the Electronic Structure of a Hole-Doped Delafossite Oxide CuCr1-xMgxO22014
Author(s)
M. Okawa, T. Yokobori, K. Konishi, R. Takei, K. Katayama, S. Oozono, T. Shinmura, T. Okuda, H. Wadati, E. Sakai, K. Ono, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga, N. Hamada, and T. Saitoh
-
Journal Title
JPS Conference Proceedings
Volume: 3
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 角度分解光電子分光法による層状Mn酸化物の電子構造2016
Author(s)
今井駿、高山勇武、小川晃平、桑原英樹、小野寛太、大川万里生、齋藤智彦
Organizer
第29回日本放射光学会年会・放射光科学合同シンポジウム
Place of Presentation
東京大学柏の葉キャンパス駅前サテライト・柏の葉カンファレンスセンター(三井ガーデンホテル柏の葉)・オークビレッジ柏の葉
Year and Date
2016-01-10
Related Report
-
[Presentation] Cu1+xMn1-xO2(x=0, 0.05)の電子構造2016
Author(s)
加藤諒、大川万里生、和達大樹、吉田鉄平、小野寛太、池永英司、奥田哲治、齋藤智彦
Organizer
第29回日本放射光学会年会・放射光科学合同シンポジウム
Place of Presentation
東京大学柏の葉キャンパス駅前サテライト・柏の葉カンファレンスセンター(三井ガーデンホテル柏の葉)・オークビレッジ柏の葉
Year and Date
2016-01-10
Related Report
-
-
-
-
[Presentation] Large energy-scale ARPES spectral modulation with temperature in a layered manganite2015
Author(s)
N. Yoshizawa, Y. Maeda, M. Okawa, M. Akaki, D. Akahoshi, H. Kuwahara, Y. Aiura, Y. Kotani, M. Kubota, K. Ono, N. Hamada, and T. Saitoh
Organizer
The 12th International Workshop on Strong Correlations and Angle-Resolved Photoemission Spectroscopy
Place of Presentation
UPMC Couvent des Cordeliers, Paris, France
Year and Date
2015-07-09
Related Report
Int'l Joint Research
-
[Presentation] Direct measurement of non-equilibrium electronic and phonon dynamics of Cu0.17Bi2Se3 via time resolved photoemission spectroscopy2015
Author(s)
T. Yamamoto, Y. Ishida, R. Yoshida, M. Okawa, K. Okazaki, T. Kanai, A. Kikkawa, Y. Taguchi, T. Kiss, K. Ishizaka, N. Ishii, J. Itatani, S. Watanabe, Y. Tokura, T. Saitoh, and S. Shin
Organizer
The 12th International Workshop on Strong Correlations and Angle-Resolved Photoemission Spectroscopy
Place of Presentation
UPMC Couvent des Cordeliers, Paris, France
Year and Date
2015-07-07
Related Report
Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
-
-
-