Anomalous optical properties by circularly polarized light in low-dimensional materials

• Project/Area Number: 18H01810
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 28020:Nanostructural physics-related
• Research Institution: Tohoku University
• Principal Investigator: 齋藤 理一郎 東北大学, 理学研究科, 教授 (00178518)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Granted (Fiscal Year 2022)
• Budget Amount: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000); Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
• Keywords: 円偏光 / バレー偏極 / 低次元物質 / 光吸収 / ラマン分光 / 角運動量 / バレー分極 / EL / ナノチューブ

Outline of Annual Research Achievements

2020年は、関連する論文を含め12編の論文を発表した。特に円偏光に関する主な３つの成果は以下のとおりである。
（1）円偏光を用いたラマン分光を用いて、遷移金属ダイカルコゲナイド物質のラマンスペクトルの解析を行い、特に散乱光の円偏光が変わるか、保存されるかの結果が単にフォノンモードの対称性によるものではなく、励起子由来の対称性を反映していることを見出し、共同研究者との実験結果を説明した。
(2)遷移金属ダイカルコゲナイド物質のEL発光は、電流の向きによって左右の円偏光が出てくることが実験で観測されているが、この現象を理論的に解析し物質に歪を加えた場合により鮮明に円偏光が得られることを見出した。
(3)ドープしたカーボンナノチューブの円偏光二色性の計算を行い、ドープしたカーボンナノチューブの光吸収が表面プラズモンによること、また円偏光二色性の大きさが非常に大きくなることを見出した。そのほか、(4)表面プラズモンに関するReview論文を発表した。(5)Janus型遷移金属ダイカルコゲナイド物質の電子状態計算結果に関する論文を発表した。(6)遷移金属ダイカルコゲナイドの光吸収スペクトルの温度依存性を計算で明らかにし、実験と一緒に論文に発表した。(7)Weyl半金属におけるファノ共鳴に異方性があることを実験結果とともに理論的に解析し論文に発表した。(8)遷移金属ダイカルコゲナイドのラマンスペクトルの歪依存性の計算結果を論文に発表した。(9)２次元物質の熱電特性に関するReview論文を発表した。

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

２次元物質と円偏光に関係する複数の現象について、科研費を申請したときの問題はほぼ解決し、現在はより広い問題に関して研究を展開している。

Strategy for Future Research Activity

現在2021年度が終了した段階であり、2022年度が最終年度であるので、残された時間で遷移金属ダイカルコゲナイドのナノチューブやナノワイヤーのラマンスペクトルの計算や、非線形応答の問題を円偏光の現象と合わせて研究を展開したい。

Research Products

• [Int'l Joint Research] ICREA(スペイン)
• [Int'l Joint Research] Indonesian Institute of Sciences(インドネシア)
• [Int'l Joint Research] Nanjing University/Institute of Metal Research/Northwestern Polytechnical University(中国)
• [Int'l Joint Research] University of Sci. and Tech. of Hanoi(ベトナム)
• [Int'l Joint Research] ICREA(スペイン)
• [Int'l Joint Research] Indonesian Institute of Sciences(インドネシア)
• [Int'l Joint Research] Nanjing University/Institute of Metal Research/Northwestern Polytechnical University(中国)
• [Int'l Joint Research] Moscow Institute of Physics/Skolkovo Institute of Science(ロシア連邦)
• [Int'l Joint Research] University of Sci. and Tech. of Hanoi(ベトナム)
• [Int'l Joint Research] 北京大学(中国)
• [Int'l Joint Research] ケルン大学(ドイツ)
• [Int'l Joint Research] 台湾師範大学(その他の国・地域)
• [Journal Article] Raman Spectroscopy for Carbon Nanotube Applications (2021)
  • Author(s): A. Jorio, R. Saito
  • Journal Title: J. Appl. Phys. Volume: 129
  • DOI: 10.1063/5.0030809
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Confinement Effect in Thermoelectric Properties of Two-Dimensional Materials (2020)
  • Author(s): N. T. Hung, A. R. T. Nugraha, T. Yang, R. Saito
  • Journal Title: MRS Advance Volume: 5 Pages: 469-479
  • DOI: 10.1557/adv.2020.128
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Scaling Laws in Synchronization of Metronomic Oscillatory Systems (2020)
  • Author(s): J. Grzesik, M. Shoufie Ukhtary, Riichiro Saito
  • Journal Title: J. Phys. Soc. Jpn. Volume: 89 Issue: 5 Pages: 054002-054002
  • DOI: 10.7566/jpsj.89.054002
  • NAID: 210000158133
  • ISSN: 0031-9015, 1347-4073
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] First-principles study of mechanical, electronic and optical properties of Janus structure in transition metal dichalcogenides (2020)
  • Author(s): Thanh Vuong V.、Van Nguyen D.、Truong Do V.、Saito Riichiro、Hung Nguyen T.
  • Journal Title: Appl. Surf. Sci. Volume: 526 Pages: 146730-146730
  • DOI: 10.1016/j.apsusc.2020.146730
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Surface plasmon in graphene and carbon nanotubes (2020)
  • Author(s): M. Shoufie Ukhtary, Riichiro Saito
  • Journal Title: Carbon Volume: - Pages: 455-474
  • DOI: 10.1016/j.carbon.2020.05.019
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Step-like conductance of a silicene pseudospin junction (2020)
  • Author(s): M. S. Ukhtary, R. Saito
  • Journal Title: J. Phys. Cond. Matt. Volume: 32
  • DOI: 10.1088/1361-648x/ab9d50
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Characterization of excitonic nature in Raman spectra using circularly polarized light (2020)
  • Author(s): Y. Zhao, S. Zhang, Y. Shi, Y. Zhang, R. Saito, J. Zhang, L. Tong
  • Journal Title: ACS Nano Volume: 14 Pages: 10527-10535
  • DOI: 10.1021/acsnano.0c04467
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Scaling law for strain dependence of Raman spectra in transition-metal dichalcogenides (2020)
  • Author(s): Y. Zhang, H. Guo, W. Sun, H. Sun, S. Ali, Z. Zhang, R. Saito, T. Yang
  • Journal Title: J. Raman Spectrosc. Volume: 51 Pages: 1353-1361
  • DOI: 10.1002/jrs.5908
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Strain effect on circularly polarized electroluminescence in transition metal dichalcogenides (2020)
  • Author(s): . S. Wang, M. S. Ukhtary, R. Saito
  • Journal Title: Phys. Rev. Res. Volume: 2
  • DOI: 10.1103/physrevresearch.2.033340
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Temperature-dependent optical constants of monolayer MoS2, MoSe2, WS2, ands WSe2: spectroscopic ellipsometry and first-principles calculations (2020)
  • Author(s): H. L. Liu, T. Yang, J. H. Chen, H. W. Chen, H. Guo, R. Saito, M. Y. Li, L. J. Li
  • Journal Title: Sci. Rep. Volume: 10
  • DOI: 10.1038/s41598-020-71808-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Circular dichroism of doped carbon nanotubes (2020)
  • Author(s): R. Saito, M. S. Ukhtary, S. Wang, Y. Iwasaki
  • Journal Title: Phys. Volume: 128
  • DOI: 10.1063/5.0028011
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Anisotropic Fano resonance in the Weyl semimetal candidate LaAlSi (2020)
  • Author(s): Zhang Kunyan、Wang Tong、Pang Xiaoqi、Han Fei、Shang Shun-Li、Hung Nguyen T.、Liu Zi-Kui、Li Mingda、Saito Riichiro、Huang Shengxi
  • Journal Title: Phys. Rev. B Volume: 102
  • DOI: 10.1103/physrevb.102.235162
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Thermoelectric performance of monolayer InSe improved by convergence of multivalley bands (2019)
  • Author(s): Hung Nguyen T. 、Nugraha Ahmad R. T.、Yang Teng、Zhang Zhidong、Saito Riichiro
  • Journal Title: Journal of Applied Physics Volume: 125 Pages: 082502-082502
  • DOI: 10.1063/1.5040752
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] New two-dimensional phase of tin chalcogenides: Candidates for high-performance thermoelectric materials (2019)
  • Author(s): Dong Baojuan、Wang Zhenhai、Hung Nguyen T.、Oganov Artem R.、Yang Teng、Saito Riichiro、Zhang Zhidong
  • Journal Title: Phys. Rev. Materials Volume: 3 Pages: 0134051-9
  • DOI: 10.1103/physrevmaterials.3.013405
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Intersubband plasmon excitations in doped carbon nanotubes (2019)
  • Author(s): D. Satco, A. R. T. Nugraha, M. S. Ukhtary, D. Kopylova, A. G. Nasibulin, R. Saito
  • Journal Title: Physical Review B Volume: 99
  • DOI: 10.1103/physrevb.99.075403
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Designing high-performance thermoelectrics in two-dimensional tetradymites (2019)
  • Author(s): Hung Nguyen T.、Nugraha Ahmad R.T.、Saito Riichiro
  • Journal Title: Nano Energy Volume: 58 Pages: 743-749
  • DOI: 10.1016/j.nanoen.2019.02.015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Tunable circular dichroism and valley polarization in the modified Haldane model (2019)
  • Author(s): Vila Marc、Hung Nguyen Tuan、Roche Stephan、Saito Riichiro
  • Journal Title: Physical Review B Volume: 99
  • DOI: 10.1103/physrevb.99.161404
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Non-vertical optical transition in near-field enhanced spectroscopy of graphene (2019)
  • Author(s): Pratama F R、Ukhtary M Shoufie、Saito Riichiro
  • Journal Title: Journal of Physics: Condensed Matter Volume: 31 Pages: 265701-265701
  • DOI: 10.1088/1361-648x/ab1335
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Planar rotation of electric field induced by edge-plasmon in a graphene nanoribbon (2019)
  • Author(s): M. Shoufie Ukhtary, Masato Maruoka, Riichiro Saito
  • Journal Title: Physical Review B Volume: 100
  • DOI: 10.1103/physrevb.100.155432
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Thermoelectric Properties of Carbon Nanotubes (2019)
  • Author(s): Hung Nguyen T.、Nugraha Ahmad R. T.、Saito Riichiro
  • Journal Title: Energies Volume: 12 Pages: 4561-4561
  • DOI: 10.3390/en12234561
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simultaneous Anionic and Cationic Redox in the Mo3S11 Polymer Electrode of a Sodium-Ion Battery (2019)
  • Author(s): Hung Nguyen T.、Yin Li-Chang、Tran Phong D.、Saito Riichiro
  • Journal Title: The Journal of Physical Chemistry C Volume: 123 Pages: 30856-30862
  • DOI: 10.1021/acs.jpcc.9b09325
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Perfect circulardichroism in the Haldane model (2018)
  • Author(s): K. Ghalamkari, Y. Tatsumi, R. Saito
  • Journal Title: J. Phys. Soc. Jpn. Volume: 87 Issue: 6 Pages: 063708-063708
  • DOI: 10.7566/jpsj.87.063708
  • ISSN: 0031-9015, 1347-4073
  • Peer Reviewed / Open Access
• [Journal Article] Conservation law of angular momentum in helicity-dependent Ramanand Rayleigh scattering (2018)
  • Author(s): Y. Tatsumi, T. Kaneko, R. Saito
  • Journal Title: Phys. Rev. B Volume: 97
  • DOI: 10.1103/physrevb.97.195444
  • Peer Reviewed / Open Access
• [Journal Article] Deep-ultraviolet Ramanscattering spectroscopy of monolayer WS2 (2018)
  • Author(s): H. S. Liu, T. Yang, Y. Tastumi, Y. Zhang, B. Dong,H. Guo, Z. D. Zhang, Y. Kumamoto, M. Y. Li, L.J. Li, R. Saito, S. Kawata
  • Journal Title: Sci. Rep. Volume: 8 Pages: 113981-10
  • DOI: 10.1038/s41598-018-29587-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Resonance Raman spectrum of doped epitaxial grapheneat the Lifshitz transition (2018)
  • Author(s): M. G. Hell, N. Ehlen, B. V. Senkovskiy, E. H. Hasdeo,A. Fedorov, D. Dombrowski, C. Busse, T. Michely,G. di Santo, L. Petaccia, R. Saito, A. Gruneis
  • Journal Title: Nano Lett. Volume: 18 Pages: 6045-6056
  • DOI: 10.1021/acs.nanolett.8b02979
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Inversion Domain Boundary in MoSe2 Layers (2018)
  • Author(s): Quang Duc Truong, Nguyen T. Hung, Yuta Nakayasu, Keiichiro Nayuki, Yo-shikazu Sasaki, Murukanahally Kempaiah Devaraju, Li-Chang Yin, Takaaki Tomai, Riichiro Saito, Itaru Honma
  • Journal Title: RCS Adv. Volume: 8 Pages: 33391-33397
  • DOI: 10.1039/c8ra07205a
  • NAID: 120006873141
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Quantum Description of Surface Plasmon Excitation by Light in Graphene (2018)
  • Author(s): M. S Ukhtary, R. Saito
  • Journal Title: Phys.Stat. Solidi B Volume: 255
  • DOI: 10.1002/pssb.201800181
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhancement of the Electric Field and Diminishment of the Group Velocity of Light in Dielectric Multilayer Systems: A General Description (2018)
  • Author(s): J. Blumberg, M. S. Ukhtary, R. Saito,
  • Journal Title: Phys. Rev. Appl. Volume: 10
  • DOI: 10.1103/physrevapplied.10.064015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Helicity-changing Raman spectra in two-dimensional materials (2020)
  • Author(s): R. Saito
  • Organizer: International symposium on physical properties for nano functional materials (ISNFM 2020)
  • Int'l Joint Research / Invited
• [Presentation] グラフェンと 2 次元物質の基礎と 2020 年代の重点課題 (2020)
  • Author(s): 齋藤 理一郎
  • Organizer: 2020 年第 81 回応用物 理学会秋季学術講演会チュートリアル
  • Int'l Joint Research / Invited
• [Presentation] 原子層物質における円偏光物性 (2020)
  • Author(s): 齋藤 理一郎
  • Organizer: 日本物理学会２０２０年秋季大会、シンポジ ウム『グラフェン物性科学の新展開』
  • Int'l Joint Research / Invited
• [Presentation] Tunable circular dichroism and valley polarization in two dimensional materials (2019)
  • Author(s): R. Saito
  • Organizer: Recent progress in graphene and 2D materials research (RPGR2019)
  • Int'l Joint Research / Invited
• [Presentation] 原子層材料における円偏光発光 (2019)
  • Author(s): R. Saito
  • Organizer: 第23回ＶＢＬシンポジウム
  • Int'l Joint Research / Invited
• [Presentation] Edge plasmon of two-dimensional materials (2019)
  • Author(s): R. Saito
  • Organizer: The 4th Graphene Flagship EU-JapanWorkshop on Graphene and related 2D materials
  • Int'l Joint Research / Invited
• [Presentation] Enhancement of electric field for measuring optical response in two-dimensional materials (2018)
  • Author(s): 齋藤 理一郎
  • Organizer: The 9th Symposium on Emerging Materials: Nanomaterials for Energy and Electronics
  • Int'l Joint Research / Invited
• [Presentation] In-plane rotation of electric field induced by edge-plasmon in graphene ribbon (2018)
  • Author(s): M. S. Ukhtary
  • Organizer: The 9th Symposium on Emerging Materials: Nanomaterials for Energy and Electronics
  • Int'l Joint Research
• [Book] Optical properties of carbon nanotubes : a volume dedicated to the memory of Professor Mildred S. Dresselhaus (2019)
  • Author(s): R. Saito
  • Total Pages: 30
  • Publisher: World Scientific
  • ISBN: 9789813272866
• [Book] Raman Spectroscopy of Two-Dimensional Materials, Springer Series in Materials Science (2019)
  • Author(s): R. Saito, Y. Tatsumi, T. Yang, H. Guo, L. Zhou, M.S. Dresselhaus
  • Total Pages: 32
  • Publisher: Springer
  • ISBN: 9789811318276
• [Remarks] Saito's Group Home Page
  • URL: https://flex.phys.tohoku.ac.jp/japanese/
• [Remarks] https://flex.phys.tohoku.ac.jp/japanese/