SHINICHIRO IDETA

Last Updated :2025/04/29

Affiliations, Positions
Research Institute for Synchrotron Radiation Science, Associate Professor
Web Site
https://home.hiroshima-u.ac.jp/~idetas/grouphp/grouphp_EN/index.html
E-mail
idetashiroshima-u.ac.jp
Self-introduction
There are many materials around us that show interesting physical properties, such as metals that pass electrical current, insulators that do not, and materials that changes their crystal structure and the electrical resistance becomes zero with changing temperature. This is because the "electrons" play an important role. These electrons are so small that they can only understood in the world of quantum mechanics, but in fact, by using synchrotron radiation, it is possible to observe the electronic structure (energy and momentum) of the electrons inside of materials. We have performed spectroscopic experiments by using synchrotron radiation at Hiroshima Synchrotron Radiation Center (HiSOR), Hiroshima University, on strongly correlated electronic materials, which show strong electron-electron correlation, to directly observe the electronic state and elucidate intriguing physical properties in materials. We believe that this would lead to obtain guidelines to make a new material with exotic physical properties in future.

Basic Information

Academic Degrees

  • The University of Tokyo
  • The University of Tokyo

In Charge of Primary Major Programs

  • Physics

Research Fields

  • Mathematical and physical sciences;Physics;Condensed matter physics I

Research Keywords

  • Solid-state physics Photoemission Time-revolved technique Strongly electron correlated system Superconductivity Electronic structure

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2025, Undergraduate Education, Second Semester, Exercise in Electromagnetism and Quantum Mechanics
  2. 2025, Undergraduate Education, First Semester, Special Study for Graduation A
  3. 2025, Undergraduate Education, Second Semester, Special Study for Graduation B
  4. 2025, Undergraduate Education, First Semester, Special Lectures in Physics (Application of Bayesian Inference to Synchrotron Radiation Measurement Data)
  5. 2025, Graduate Education (Master's Program) , First Semester, Special Lecture in Physics D
  6. 2025, Graduate Education (Master's Program) , First Semester, Exercise in Physics I
  7. 2025, Graduate Education (Master's Program) , Second Semester, Exercise in Physics II
  8. 2025, Graduate Education (Master's Program) , First Semester, Special Exsecise in Physics A
  9. 2025, Graduate Education (Master's Program) , Second Semester, Special Exsecise in Physics B
  10. 2025, Graduate Education (Master's Program) , Academic Year, Special Research in Physics

Research Activities

Academic Papers

  1. Probing the interaction between topological and Rashba-like surface states in MnBi2⁢Te4 through Sn doping, Phys. Rev. B, 111(65115), 1, 20250410
    Link to Paper Search Results by DOI
  2. ★, Dual origin in the temperature dependence of the coupling parameter for the strange metal state in heavily overdoped cuprate superconductor, Phys. Rev. Research, 7(L012039), 20250224
    Link to Paper Search Results by DOI
  3. ★, Proximity-Induced Nodal Metal in an Extremely Underdoped CuO2 Plane in Triple-Layer Cuprates, cond mat, 20250222
  4. Electronic states in superconducting type-II Dirac semimetal: 1T-PdSeTe, Phys. Rev. Research, 7(013174), 20250218
    Link to Paper Search Results by DOI
  5. Phase transitions, Dirac and Weyl semimetal states in Mn1-xGexBi2Te4, SCIENTIFIC REPORTS, 15(1), 20250111
    Link to Paper Search Results by DOI
  6. The electronic structure of Mn1−xPbxBi2Te4: experimental evidence of topological phase transition, 20241119
    Link to Paper Search Results by DOI
  7. Coupling Between Electrons and Charge Density Wave Fluctuation and its Possible Role in Superconductivity, ADVANCED SCIENCE, 11(41), 20240905
    Link to Paper Search Results by DOI
  8. Evidence for Two-Dimensional Weyl Fermions in Air-Stable Monolayer PtTe1.75, NANO LETTERS, 24(33), 10237-10243, 20240802
    Link to Paper Search Results by DOI
  9. Tiny Fermi surface with an extremely light mass of ternary chalcopyrite CdSnAs2 revealed by angle-resolved photoemission spectroscopy, 8(044604), 20240425
    Link to Paper Search Results by DOI
  10. Semiconducting Electronic Structure of the Ferromagnetic Spinel HgCr2Se4 Revealed by Soft-X-Ray Angle-Resolved Photoemission Spectroscopy, Phys. Rev. Lett., 130(186402), 20230501
    Link to Paper Search Results by DOI
  11. Van Hove singularity and Lifshitz transition in thickness-controlled Li-intercalated graphene, PHYSICAL REVIEW B, 105(23), 20220628
    Link to Paper Search Results by DOI
  12. Observation of bands with d(xy) orbital character near the Fermi level in NdFeAs1-xPxO0.9F0.1 using angle-resolved photoemission spectroscopy, PHYSICAL REVIEW B, 105(20), 20220506
    Link to Paper Search Results by DOI
  13. Observation of bands with dxy orbital character near the Fermi level in NdFeAs1-xPxO0.9F0.1 using angle-resolved photoemission spectroscopy, PHYSICAL REVIEW B, 105(205106), 20220506
    Link to Paper Search Results by DOI

  14. Fabrication of (Bi-2)(m)(Bi2Te3)(n) superlattice films by Te desorption from a pristine Bi2Te3 film

    , APPLIED PHYSICS LETTERS, 120(17), 20220425
    Link to Paper Search Results by DOI
  15. Fabrication of (Bi2)m(Bi2Te3)n superlattice films by Tedesorption from a pristine Bi2Te3 film, Applied Physics Letters, 120(173102), 20220425
    Link to Paper Search Results by DOI
  16. Large anomalous Hall effect induced by weak ferromagnetism in the noncentrosymmetric antiferromagnet CoNb3S6, PHYSICAL REVIEW B, 105(12), 20220304
    Link to Paper Search Results by DOI
  17. Superconducting gap and pseudogap in the surface states of the iron-based superconductor PrFeAsO1−y studied by angle-resolved photoemission spectroscopy, PHYSICAL REVIEW RESEARCH, 3(043151), 20211202
    Link to Paper Search Results by DOI
  18. ★, Hybridization of Bogoliubov Quasiparticles between Adjacent CuO2 Layers in the Triple-Layer Cuprate Bi2Sr2Ca2Cu3O10+d Studied by Angle-Resolved Photoemission Spectroscopy, PHYSICAL REVIEW LETTERS, 127(217004), 1-6, 20211119
    Link to Paper Search Results by DOI
  19. Dirac semimetal phase and switching of band inversion in XMg2Bi2 (X = Ba and Sr), SCIENTIFIC REPORTS, 11(1), 20211109
    Link to Paper Search Results by DOI
  20. Nematicity in a cuprate superconductor revealed by angle-resolved photoemission spectroscopy under uniaxial strain, npj Quantum Materials, 6(86), 20211007
    Link to Paper Search Results by DOI
  21. Absence of ferromagnetism in MnBi2Te4/Bi2Te3 down to 6 K, PHYSICAL REVIEW B, 103, 205405, 20210504
  22. Extended superconducting dome revealed by angle-resolved photoemission spectroscopy of electron-doped cuprates prepared by the protect annealing method, PHYSICAL REVIEW RESEARCH, 3(1), 013180, 20210224
  23. Orbital mixing at the onset of high-temperature superconductivity in FeSe1-xTex/CaF2, PHYSICAL REVIEW RESEARCH, 3(1), L012007, 20210120
  24. Experimental Observation of Anisotropic Valence Band Dispersion in Dinaphtho[2,3-b:2 ',3 '-f]thieno[3,2-b]thiophene (DNTT) Single Crystals, JOURNAL OF PHYSICAL CHEMISTRY C, 125(5), 2938-2943, 20210112
  25. Fabrication of a novel magnetic topological heterostructure and temperature evolution of its massive Dirac cone, NATURE COMMUNICATIONS, 11(1), 4821, 20200924
  26. Near Fermi level electronic structure of Ti3SiC2 revealed by angle-resolved photoemission spectroscopy, PHYSICAL REVIEW B, 102(7), 075111, 20200807
  27. Temperature dependence of the Kondo resonance in the photoemission spectra of the heavy-fermion compounds YbXCu4 (X = Mg, Cd, and Sn), PHYSICAL REVIEW B, 101(23), 235160, 20200625
  28. Devil's staircase transition of the electronic structures in CeSb, NATURE COMMUNICATIONS, 11(1), 4821, 20200608
    Link to Paper Search Results by DOI
  29. Valence band dispersion measured in the surface normal direction of CH3NH3PbI3 single crystals, APPLIED PHYSICS EXPRESS, 13(1), 011009, 20200101
  30. ★, Experimental investigation of the suppressed superconducting gap and double-resonance mode in Ba1-xKxFe2As2, PHYSICAL REVIEW B, 100(23), 235135, 20191223
    Link to Paper Search Results by DOI
  31. Giant Rashba system on a semiconductor substrate with tunable Fermi level: Bi/GaSb(110)-(2 x 1), PHYSICAL REVIEW MATERIALS, 3(12), 126001, 20191202
    Link to Paper Search Results by DOI
  32. d-wave superconducting gap observed in protect-annealed electron-doped cuprate superconductors Pr1.3-xLa0.7CexCuO4, PHYSICAL REVIEW B, 100(5), 054517, 20190828
    Link to Paper Search Results by DOI
  33. ★, Electronic Structure of Sr1-yCayFe2(As1-xPx)(2) (x=0.25, y=0.08) Revealed by Angle-Resolved Photoemission Spectroscopy, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 88(8), 084701, 20190815
    Link to Paper Search Results by DOI
  34. Non-trivial surface states of samarium hexaboride at the (111) surface, NATURE COMMUNICATIONS, 10, 2298-2298, 20190524
    Link to Paper Search Results by DOI
  35. High sensitivity detection of the frontier electronic states of CH3NH3PbI3 single crystals by low energy excitation, APPLIED PHYSICS EXPRESS, 12(5), 051009, 20190501
  36. Change of Fermi surface states related with two different T-c-raising mechanisms in iron pnictide superconductors, PHYSICAL REVIEW B, 98(10), 100501, 20180910
    Link to Paper Search Results by DOI
  37. ★, Ultrafast dissolution and creation of bonds in IrTe2 induced by photodoping, SCIENCE ADVANCES, 5(3), eaar3867, 20180727
  38. Effect of electron correlations on spin excitation bandwidth in Ba0.75 K0.25 Fe2As2 as seen via time-of-flight inelastic neutron scattering, PHYSICAL REVIEW B, 92, 241112(R), 20180618
    Link to Paper Search Results by DOI
  39. Flattening and manipulation of the electronic structure of h-BN/Rh(111) nanomesh upon Sn intercalation, Surface Science, 672-673, 33-38, 20180515
    Link to Paper Search Results by DOI
  40. Direct observation of heterogeneous valence state in Yb-based quasicrystalline approximants, PHYSICAL REVIEW B, 96(24), 241102, 20171111
    Link to Paper Search Results by DOI
  41. Absence of superconductivity in the hole-doped Fe pnictide Ba(Fe1-xMnx)2As2: Photoemission and x-ray absorption spectroscopy studies, Phys. Rev. B, 88(100501(R)), 20130903
  42. ★, Effects of Zn substitution on the electronic structure of BaFe2As2 revealed by angle-resolved Photoemission spectroscopy, Phys. Rev. B, 87Editor's suggestion(201110(R)), 20130531
  43. ★, Dependence of Carrier Doping on the Impurity Potential in Transition-Metal-Substituted FeAs-Based Superconductors, PHYSICAL REVIEW LETTERS, 110(10), 107007, 20130308
    Link to Paper Search Results by DOI
  44. Self-Energy on the Low- to High-Energy Electronic Structure of Correlated Metal SrVO3, PHYSICAL REVIEW LETTERS, 109(5), 056401, 20120731
    Link to Paper Search Results by DOI
  45. ★, Energy scale directly related to superconductivity in high-T-c cuprates: Universality from the temperature-dependent angle-resolved photoemission of Bi2Sr2Ca2Cu3O10+delta, PHYSICAL REVIEW B, 85(10), 104515, 20120320
    Link to Paper Search Results by DOI
  46. Angle-resolved photoemission spectroscopy study of PrFeAsO0.7: Comparison with LaFePO, PHYSICAL REVIEW B, 84(1), 014504, 20110718
    Link to Paper Search Results by DOI
  47. Two-Dimensional and Three-Dimensional Fermi Surfaces of Superconducting BaFe2(As1-xPx)(2) and Their Nesting Properties Revealed by Angle-Resolved Photoemission Spectroscopy, PHYSICAL REVIEW LETTERS, 106(11), 117001, 20110318
    Link to Paper Search Results by DOI
  48. ★, Enhanced Superconducting Gaps in the Trilayer High-Temperature Bi2Sr2Ca2Cu3O10+d Cuprate Superconductor, PHYSICAL REVIEW LETTERS, 104(22), 227001-1-227001-4, 20100601
    Link to Paper Search Results by DOI
  49. Universal versus Material-Dependent Two-Gap Behaviors of the High-T-c Cuprate Superconductors: Angle-Resolved Photoemission Study of La2-xSrxCuO4, PHYSICAL REVIEW LETTERS, 103(3), 037004, 20090716
    Link to Paper Search Results by DOI

Invited Lecture, Oral Presentation, Poster Presentation

  1. Nodal metal in an extremely underdoped CuO2 plane in triple-layer cuprate superconductors, Shin-ichiro Ideta, OPTO-X-NANO O2024, 2024/11/27, With Invitation, English
  2. Recent Developments of ARPES Studies at HiSOR BL-1, Shin-ichiro Ideta, Masashi Arita, Shiv Kumar, Yudai Miyaia, Yogendra Kumar, Amit Kumar, Kenya Shimada, The 28th Hiroshima International Symposium on Synchrotron Radiation, 2023/03/13, Without Invitation, Japanese
  3. Superconductivity in Yb-intercalated Few-layer Graphene, Ryota Akiyama, Shunsuke Sato, Yudai Miyai, Yusuke Hashimoto, Jehong Jung, Rei Hobara, Yogendra Kumar, Amit Kumar, Shota Shimizu, Ryotaro Minakawa, Yuta Yamamoto, Hiroto Tomita, Takashi Tadamura, Takuya Moriki, Yuya Yamada,Shin-ichiro Ideta, Kenya Shimada, Tomohiro Matsushita and Shuji Hasegawa, The 10th International Symposium on Surface Science (ISSS-10), Innovation for a Better Society, 2024/10/24, Without Invitation, English
  4. Hole-Concentration Dependence of the Spectral Weight of Cuprate Superconductors Studied by ARPES, Shinichiro Ideta, Shigeyuki Ishida, Hiroshi Eisaki, Kiyohisa Tanaka, The Physics of Japan 2024 Annual Meeting, 2024/09/16, Without Invitation, Japanese, The Physics of Japan, Hokkaido University
    Related URL
  5. Developments of ARPES Studies at HiSOR BL-1: Towards HiSOR-II Projects, Shin-ichiro Ideta, Masashi Arita, Shiv Kumar, Yudai Miyai, Yogendra Kumar, Amit Kumar, Kenya Shimada, 2024/01/10, Without Invitation, Japanese
    Related URL
  6. Nodal metallic behavior of underdoped triple-layer cuprate Bi2223, Shin-ichiro Ideta, T. Yoshida, K. Tanaka, W. O. Wang, B. Moritz, T. P. Devereaux, T. K. Lee, C. Y. Mou, S. Adachi, N. Sakaki, S. Yamaguchi, T. Watanabe, T. Noji, S. Uchida, S. Ishida, and A. Fujimor, 15th International Conference on Electronic Spectroscopy and Structure, 2023/08/21, Without Invitation, English
    Related URL
  7. Introduction to the role and applications of synchrotron radiation to explore the possibility of collaborative research from other fields, Shin-ichiro Ideta, 2023/11/30, Without Invitation, Japanese
  8. Observation of nodal metal in the underdoped triple-layer cuprate Bi2223 by using high-resolution ARPES, S. Ideta, S. Adachi, T. Noji, W. O. Wang, S. Yamaguchi, N. Sasaki, S. Ishida, T. Fujii, T. Watanabe, B. Moritz, T. P. Devereaux, C.-Y. Mou, M. Arita, S. Uchida, T. Yoshida, K. Tanaka, T. K. Lee, and A. Fujimori, UVSOR Symposium 2023, 2023/12/02, Without Invitation, Japanese
    Related URL
  9. Superconducting gap and pseudogap in the underdoped triple-layer cuprate Bi2223, Shin-ichiro Ideta, T. Yoshida, K. Tanaka, M. Arita, S. Yamaguchi, N. Sasaki, S. Adachi, T. Watanabe, T. Fujii, T. Noji, S. Ishida, S. Uchida, W. O. Wang, B. Moritz, T. P. Devereaux, T. K. Lee, C. Y. Mou, and A. Fujimori, The Physical Society of Japan 2023 Annual (78th) Meeting, 2023/09/17, Without Invitation, Japanese
  10. ARPES Studies and Its Developments at HiSOR: Towards HiSOR-II Projects, Shin-ichiro Ideta, Masashi Arita, Koji Miyamoto, Taichi Okuda, and Kenya Shimada, Seeds and Needs for Tomorrow's Synchrotron Radiation Photoelectron Spectroscopy Research, Photoemission Workshop 2023, 2023/07/29, With Invitation, Japanese
    Related URL
  11. Superconducting gap and pseudogap in underdoped triple layer cuprate Bi2223, Shini-chiro Ideta, K. Tanaka (UVSOR-III Synchrotron), T. Yoshida (Kyoto Univ.), A. Fujimori (Tokyo Univ., National Tsing Hua Univ.), S. Adachi, N. Sasaki, S. Yamaguchi, T. Watanabe (Hisoraki Univ.), T. Noji (Tohoku Univ.), T. Fujii (Tokyo Univ.), S. Uchida (Tokyo Univ., AIST), S. Ishida (AIST), W. O. Wang, B. Moritz, T. P. Devereaux (Stanford Univ.), T. K. Lee, C. Y. Mou (National Tsing Hua Univ., Academia Sinica), 10th High-Tc forum, 2023/03/21, Without Invitation, Japanese
  12. High-resolution angle- and spin-resolved photoemission spectroscopy using synchrotron radiation in HiSOR and its recent developments, Shin-ichiro Ideta, Shiv Kumar, Koji Miyamoto, Taichi Okuda, Masashi Arita, and Kenya Shimada, AO-SRI2022, 2022/11/11, With Invitation, English, Tohoku University
    Related URL
  13. Doping dependence of the energy gap in the triple-layer cuprate Bi2223, Shin-Ichiro Ideta, K. Tanaka1, T. Yoshida, S. Adachi, S. Yamaguchi, N. Sasaki, T. Watanabe, T. Noji, S. Ishida, S. Uchida, and A. Fujimori, International Workshop on Correlations and Angle-Resolved Photoemission Spectroscopy (CORPES22), 2022/07/11, Without Invitation, English
    Related URL
  14. Doping dependence of the electronic structure in triple-layer cuprate Bi2223, Shin-ichiro Ideta, The 25th Hiroshima International Symposium on Synchrotron Radiation, 2021/03/05, With Invitation, English, Hiroshima University, Hiroshima Synchrotron Radiation Center

External Funds

Acceptance Results of Competitive Funds

  1. Grant-in-Aid for Scientific Research (C), Systematic study of ARPES spectra and universality to elucidate the mechanism of high-temperature superconductivity, 2024, 2027

Social Activities

Organizing Academic Conferences, etc.

  1. The 27th Hiroshima International Symposium on Synchrotron Radiation, 2022/03, 2023/03
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