2023 Fiscal Year Annual Research Report
Project Area | Physical Properties of Quantum Liquid Crystals |
Project/Area Number |
19H05826
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Research Institution | The University of Tokyo |
Principal Investigator |
小林 研介 東京大学, 大学院理学系研究科(理学部), 教授 (10302803)
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Co-Investigator(Kenkyū-buntansha) |
戸田 泰則 北海道大学, 工学研究院, 教授 (00313106)
戸川 欣彦 大阪公立大学, 大学院工学研究科, 教授 (00415241)
石坂 香子 東京大学, 大学院工学系研究科(工学部), 教授 (20376651)
岡崎 浩三 東京大学, 物性研究所, 准教授 (40372528)
有馬 孝尚 東京大学, 大学院新領域創成科学研究科, 教授 (90232066)
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Project Period (FY) |
2019-06-28 – 2024-03-31
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Keywords | 量子液晶 / 電子状態 / 素励起 / ナノサイエンス / 超高速光技術 |
Outline of Annual Research Achievements |
量子液晶の電子状態の制御を行い機能開発につなげるために種々の物質で測定を行うと同時に、実験手法の開発に取り組んだ。取り組んだ内容と成果の概要は以下の通りである。小林は量子スピン顕微鏡の開発をさらに進め、超伝導量子渦の観測を行うとともに、典型的な素励起であるマグノン検出のためのACゼーマン効果を利用したイメージングも行った。有馬はGdRu2Ge2、VO2、GaNb4Se8などのX線散乱および中性子散乱を行い、電荷やスピンの配列や相関に起因する回転対称性の破れを見出すとともに、磁化や電気輸送の異常を伴うことを見出した。戸田はビーム断面に特異点を有する光渦パルスを用いた銅酸化物高温超伝導体の光誘起相制御の研究を行い、電荷液晶を創発する擬ギャップ電子に対して、高速かつ超解像の時空間変調を実証するという成果を得た。戸川は、スピンソリトン格子の集団共鳴運動の研究を進め、複数の試料に対するスペクトル解析から反対称性交換相互作用と臨界磁場・臨界温度・異方性磁場などの物質パラメーターの相関を明らかにし、サブテラヘルツ帯で動作するカイラルスピン物質の設計指針を得た。岡﨑はネマティック電子状態を示すことでも知られているカゴメ超伝導体CsV3Sb5において時間・角度分解光電子分光を行い、コヒーレントフォノン励起に伴うvan Hove特異点の振動を捉える、という成果を得た。石坂は超高速時間分解電子顕微鏡にナノ秒電流・電場パルスを同期したイメージング計測のプロトコルを開発し、強磁性体のドメイン壁が100ナノ秒の矩形電流パルスにより駆動される様子をナノスケールで可視化した。
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Research Progress Status |
令和5年度が最終年度であるため、記入しない。
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Strategy for Future Research Activity |
令和5年度が最終年度であるため、記入しない。
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Remarks |
異常な「4価の鉄」の酸化物の謎を解明(有馬グループ) https://www.k.u-tokyo.ac.jp/information/category/press/10454.html 量子の渦、数えます!(小林グループ) https://www.phys.s.u-tokyo.ac.jp/press/40720/
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Research Products
(143 results)
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[Journal Article] Frequency-tunable magnetic field sensing using continuous-wave optically detected magnetic resonance with nitrogen-vacancy centers in diamond2024
Author(s)
Ryusei Okaniwa, Takumi Mikawa, Yuichiro Matsuzaki, Tatsuma Yamaguchi, Rui Suzuki, Norio Tokuda, Hideyuki Watanabe, Norikazu Mizuochi, Kento Sasaki, Kensuke Kobayashi, and Junko Ishi-Hayase
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Journal Title
Journal of Applied Physics
Volume: 135
Pages: 044401/1-10
DOI
Peer Reviewed / Open Access
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[Journal Article] Structural phase transition and spin state in the perovskite cobalt oxides La_{1-x}PrxCoO3 (x = 0.30, 0.34)2024
Author(s)
D. Urushihara, C. Ando, M. Komabuchi, K. Fukuda, Y. Nakahira, C. Moriyoshi, S. Kitou, N. Abe, T. Arima, T. Asaka
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Journal Title
Physical Review B
Volume: 109
Pages: 024115/1-7
DOI
Peer Reviewed
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[Journal Article] Multistep topological transitions among meron and skyrmion crystals in a centrosymmetric magnet2024
Author(s)
H. Yoshimochi, R. Takagi, J. Ju, N. D. Khanh, H. Saito, H. Sagayama, H. Nakao, S. Itoh, Y. Tokura, T. Arima, S. Hayami, T. Nakajima, S. Seki
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Journal Title
Nature Physics
Volume: 18
Pages: 45301
DOI
Peer Reviewed
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[Journal Article] Unveiling the orbital-selective electronic band reconstruction through the structural phase transition in TaTe22024
Author(s)
Natsuki Mitsuishi, Yusuke Sugita, Tomoki Akiba, Yuki Takahashi, Masato Sakano, Koji Horiba, Hiroshi Kumigashira, Hidefumi Takahashi, Shintaro Ishiwata, Yukitoshi Motome, Kyoko Ishizaka
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Journal Title
Physical Review Research
Volume: 6
Pages: 013155/1-17
DOI
Peer Reviewed / Open Access
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[Journal Article] Magnetic field imaging by hBN quantum sensor nanoarray2023
Author(s)
Kento Sasaki, Yuki Nakamura, Hao Gu, Moeta Tsukamoto, Shu Nakaharai, Takuya Iwasaki, Kenji Watanabe, Takashi Taniguchi, Shinichi Ogawa, Yukinori Morita, and Kensuke Kobayashi
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Journal Title
Applied Physics Letters
Volume: 122
Pages: 244003/1-6
DOI
Peer Reviewed / Open Access
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[Journal Article] Kondo temperature evaluated from linear conductance in magnetic fields2023
Author(s)
Rui Sakano, Tokuro Hata, Kaiji Motoyama, Yoshimichi Teratani, Kazuhiko Tsutsumi, Akira Oguri, Tomonori Arakawa, Meydi Ferrier, Richard Deblock, Mikio Eto, and Kensuke Kobayashi
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Journal Title
Physical Review B
Volume: 108
Pages: 205147/1-10
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Direct observations of spin fluctuations in hedgehog-anti-hedgehog spin lattice states in MnSi_{1-x}Ge_x (x = 0.6 and 0.8) at zero magnetic field2023
Author(s)
S. Aji, T. Oda, Y. Fujishiro, N. Kanazawa, H. Saito, H. Endo, M. Hino, S. Itoh, T. Arima, Y. Tokura, T. Nakajima
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Journal Title
Physical Review B
Volume: 108
Pages: 054445/1-10
DOI
Peer Reviewed
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[Journal Article] Breathing pyrochlore magnet CuGaCr4S8: Magnetic, thermodynamic, and dielectric properties2023
Author(s)
M. Gen, H. Ishikawa, A. Miyake, T. Yajima, H. O. Jeschke, H. Sagayama, A. Ikeda, Y. H. Matsuda, K. Kindo, M. Tokunaga, Y. Kohama, T. Kurumaji, Y. Tokunaga, T. Arima
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Journal Title
Physical Review Materials
Volume: 7
Pages: 104404/1-12
DOI
Peer Reviewed
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[Journal Article] Ultrafast control of the crystal structure in a topological charge-density-wave material2023
Author(s)
T. Suzuki, Y. Kubota, N. Mitsuishi, S. Akatsuka, J. Koga, M. Sakano, S. Masubuchi, Y. Tanaka, T. Togashi, H. Ohsumi, K. Tamasaku, M. Yabashi, H. Takahashi, S. Ishiwata, T. Machida, I. Matsuda, K. Ishizaka and K. Okazaki
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Journal Title
Phys. Rev. B
Volume: 108
Pages: 184305/1-7
DOI
Peer Reviewed
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[Journal Article] Temporal Evolution and Fluence Dependence of Band Structure in Photoexcited Ta2Ni0.9Co0.1Se5 Probed by Time- and Angle-Resolved Photoemission Spectroscopy2023
Author(s)
Y. Takahashi, T. Suzuki, M. Hattori, M. Okawa, H. Takagi, N. Katayama, H. Sawa, M. Nohara, Y. Zhong, K. Liu, T. Kanai, J. Itatani, S. Shin, K. Okazaki and T. Mizokawa
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Journal Title
J. Phys. Soc. Jpn.
Volume: 92
Pages: 064706/1-9
DOI
Peer Reviewed
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[Journal Article] Testing electron-phonon coupling for the superconductivity in kagome metal CsV3Sb52023
Author(s)
Y. Zhong, S. Li, H. Liu, Y. Dong, K. Aido, Y. Arai, H. Li, W. Zhang, Y. Shi, Z. Wang, S. Shin, H. N. Lee, H. Miao, T. Kondo and K. Okazaki
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Journal Title
Nat. Commun.
Volume: 14
Pages: 1945/1-7
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Nodeless electron pairing in CsV3Sb5-derived kagome superconductors2023
Author(s)
Y. Zhong, J. Liu, X. Wu, Z. Guguchia, J.-X. Yin, A. Mine, Y. Li, S. Najafzadeh, D. Das, C. Mielke, R. Khasanov, H. Luetkens, T. Suzuki, K. Liu, X. Han, T. Kondo, J. Hu, S. Shin, Z. Wang, X. Shi, Y. Yao and K. Okazaki
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Journal Title
Nature
Volume: 617
Pages: 488-492
DOI
Peer Reviewed / Int'l Joint Research
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[Journal Article] Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2(M=V,Nb,Ta)2023
Author(s)
N. Katayama, Y. Matsuda, K. Kojima, T. Hara, S. Kitou, N. Mitsuishi, H. Takahashi, S. Ishiwata, K. Ishizaka, H. Sawa
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Journal Title
Physical Review B
Volume: 107
Pages: 245113/1-5
DOI
Peer Reviewed
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[Journal Article] Charge transport and thermopower in the electron-doped narrow gap semiconductor Ca_{1-x}LaxPd3O42023
Author(s)
Kouta Kazama, Masato Sakano, Kohei Yamagami, Takuo Ohkochi, Kyoko Ishizaka, Terumasa Tadano, Yusuke Kozuka, Hidetoshi Yoshizawa, Yoshihiro Tsujimoto, Kazunari Yamaura, Jun Fujioka
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Journal Title
Physical Review Materials
Volume: 7
Pages: 085402/1-6
DOI
Peer Reviewed
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[Journal Article] Symmetry Engineering in Twisted Bilayer WTe22023
Author(s)
Yijin Zhang, Keisuke Kamiya, Takato Yamamoto, Masato Sakano, Xiaohan Yang, Satoru Masubuchi, Shota Okazaki, Keisuke Shinokita, Tongmin Chen, Kohei Aso, Yukiko Yamada-Takamura, Yoshifumi Oshima, Kenji Watanabe, Takashi Taniguchi, Kazunari Matsuda, Takao Sasagawa, Kyoko Ishizaka, Tomoki Machida
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Journal Title
Nano Letters
Volume: 23
Pages: 9280-9286
DOI
Peer Reviewed
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[Presentation] Development of Quantum Sensing under High Pressure: Visualization of Pressure and Magnetic Field2024
Author(s)
Ryotaro Suda, Kento Sasaki, Kensuke Kobayashi, Kenshin Uriu, Misaki Sasaki, Mari Einaga, and Katsuya Shimizu
Organizer
International Symposium on Quantum Electronics (The University of Tokyo, Tokyo, Japan, February 13-16, 2024)
Int'l Joint Research
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[Presentation] Quantitative imaging of superconducting vortices penetrating a thin film using diamond quantum sensor2024
Author(s)
Shunsuke Nishimura, Taku Kobayashi, Daichi Sasaki, Takeyuki Tsuji, Takayuki Iwasaki, Mutsuko Hatano, Kento Sasaki, and Kensuke Kobayashi
Organizer
International Symposium on Quantum Electronics (The University of Tokyo, Tokyo, Japan, February 13-16, 2024)
Int'l Joint Research
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[Presentation] Observation of domain wall in chiral antiferromagnet2024
Author(s)
Moeta Tsukamoto, Zhewen Xu, Tomoya Higo, Kouta Kondou, Kento Sasaki, Mihiro Asakura, Shoya Sakamoto, Pietro Gambardella, Shinji Miwa, Yoshichika Otani, Satoru Nakatsuji, Christian L Degen, and Kensuke Kobayashi
Organizer
International Symposium on Quantum Electronics (The University of Tokyo, Tokyo, Japan, February 13-16, 2024)
Int'l Joint Research
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[Presentation] Observation of domain wall in chiral antiferromagnet2024
Author(s)
Moeta Tsukamoto, Zhewen Xu, Tomoya Higo, Kouta Kondou, Kento Sasaki, Mihiro Asakura, Shoya Sakamoto, Pietro Gambardella, Shinji Miwa, Yoshichika Otani, Satoru Nakatsuji, Christian L Degen, and Kensuke Kobayashi
Organizer
CEMS Symposium on Emergent Quantum Materials 2024 (Tokyo, Japan, February 20-22, 2024)
Int'l Joint Research
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[Presentation] Theory and Experiment of Current Noise through Kondo Dot under Magnetic Fields2024
Author(s)
Rui Sakano, Tokuro Hata, Kaiji Motoyama, Yoshimichi Teratani, Tomonori Arakawa, Meydi Ferrier, Richard Deblock, Mikio Eto, Kensuke Kobayashi, and Akira Oguri
Organizer
APS March Meeting 2024 (Minneapolis, USA, March 4-8, 2024)
Int'l Joint Research
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[Presentation] Observation of domain wall in chiral antiferromagnet Mn3Sn realized perpendicular magnetization2024
Author(s)
Moeta Tsukamoto, Zhewen Xu, Tomoya Higo, Kouta Kondou, Kento Sasaki, Mihiro Asakura, Shoya Sakamoto, Pietro Gambardella, Shinji Miwa, Yoshichika Otani, Satoru Nakatsuji, Christian L Degen, and Kensuke Kobayashi
Organizer
APS March Meeting 2024 (Minneapolis, USA, March 4-8, 2024).
Int'l Joint Research
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[Presentation] Observation of domain wall in chiral antiferromagnet Mn3Sn”2024
Author(s)
Moeta Tsukamoto, Zhewen Xu, Tomoya Higo, Kouta Kondou, Kento Sasaki, Mihiro Asakura, Shoya Sakamoto, Pietro Gambardella, Shinji Miwa, Yoshichika Otani, Satoru Nakatsuji, Christian L Degen, and Kensuke Kobayashi
Organizer
第71回応用物理学会春季学術講演会(東京都市大学世田谷キャンパス&オンライン、2024年3月22-25日)。
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[Presentation] 時間分解ARPESによるTaTe2の光励起電子状態の研究2024
Author(s)
三石夏樹, 鈴木剛, 秋葉智起, 古賀淳平, ZHONG Yigui, 劉珂成, 金井輝人, 板谷治郎, 高橋英史, 石渡晋太郎, 岡﨑浩三, 石坂香子
Organizer
日本物理学会 2024年春季大会(オンライン、2024年3月18-21日)
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[Presentation] micro-focused ARPES study of electronic structure in Janus monolayer transition metal dichalcogenides2024
Author(s)
S. Akatsuka, M. Sakano, H. Nakajo, T. Kato, N. Yamaguchi, Fumiyuki Ishii, Takato Yamamoto, Natsuki Mitsuishi, Kenji Watanabe, Takashi Taniguchi, Miho Kitamura, Koji Horiba, Katsuaki Sugawara, Seigo Souma, Takafumi Sato, Hiroshi Kumigashira, Yuta Seo, Satoru Masubuchi, Tomoki Machida, Kyoko Ishizaka
Organizer
APS March Meeting 2024 (Minneapolis, USA, 2024/3/4-8)
Int'l Joint Research
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[Presentation] 時間分解ARPESによるTaTe2の光励起電子状態の研究2024
Author(s)
三石夏樹, 鈴木剛, 秋葉智起, 古賀淳平, ZHONG Yigui, 劉珂成, 金井輝人, 板谷治郎, 高橋英史, 石渡晋太郎, 岡﨑浩三, 石坂香子
Organizer
日本物理学会(オンライン、2024年3月18日-23日)
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[Presentation] Evaluation of the Kondo temperature from linear conductance measurements in magnetic fields in a carbon nanotube quantum dot2023
Author(s)
R. Sakano, T. Hata, K. Motoyama, Y. Teratani, K. Tsutsumi, T. Arakawa, M. Ferrier, R. Deblock, M. Eto, K. Kobayashi, and A. Oguri
Organizer
The 25th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-25) (Grenoble, France, July 10-14, 2023)
Int'l Joint Research
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[Presentation] Magnetic field imaging by hexagonal boron nitride quantum sensor nanoarray2023
Author(s)
K. Sasaki, Y. Nakamura, H. Gu, M. Tsukamoto, S. Nakaharai, T. Iwasaki, K. Watanabe, T. Taniguchi, S. Ogawa, Y. Morita, and K. Kobayashi
Organizer
Quantum Sensing Gordon Research Conference (Les Diablerets Conference Center in Les Diablerets, Vaud, Switzerland, July 23-28, 2023)
Int'l Joint Research
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[Presentation] Quantitative imaging of superconducting vortices penetrating a thin film using diamond quantum sensor2023
Author(s)
Shunsuke Nishimura, Taku Kobayashi, Daichi Sasaki, Takeyuki Tsuji, Takayuki Iwasaki, Mutsuko Hatano, Kento Sasaki, and Kensuke Kobayashi
Organizer
International Conference on Quantum Liquid Crystals 2023 (QLC2023) (Hokkaido University, Sapporo, Japan, August 8-10, 2023)
Int'l Joint Research
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[Presentation] Magnetic imaging of magnetic film using h-BN quantum sensor2023
Author(s)
Moeta Tsukamoto, Hao Gu, Yuki Nakamura, Shu Nakaharai, Takuya Iwasaki, Kenji Watanabe, Takashi Taniguchi, Masashi Kawaguchi, Masamitsu Hayashi, Kento Sasaki, and Kensuke Kobayashi
Organizer
12th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information (Nasu, Tochigi, Japan, September 27-29, 2023)
Int'l Joint Research
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[Presentation] Quantitative visualization of quantum vortices penetrating a superconductor using quantum diamond microscope2023
Author(s)
Shunsuke Nishimura, Taku Kobayashi, Daichi Sasaki, Takeyuki Tsuji, Takayuki Iwasaki, Mutsuko Hatano, Kento Sasaki, and Kensuke Kobayashi
Organizer
12th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information (Nasu, Tochigi, Japan, September 27-29, 2023)
Int'l Joint Research
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[Presentation] Measurement of Quantum Vortices in Ultra-Small Superconductors Using Diamond Quantum Sensors2023
Author(s)
Taku Kobayashi, Shunsuke Nishimura, Kensuke Ogawa Takeyuki Tsuji, Takayuki Iwasaki , Mutsuko Hatano, Kento Sasaki, and Kensuke Kobayashi
Organizer
12th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information (Nasu, Tochigi, Japan, September 27-29, 2023)
Int'l Joint Research
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[Presentation] Toward the study of multiferroics by quantum sensing of electric and magnetic fields2023
Author(s)
Yuki Nakamura, Hao Gu, Moeta Tsukamoto, Shu Nakaharai, Takuya Iwasaki, Kenji Watanabe, Takashi Taniguchi, Kento Sasaki, and Kensuke Kobayashi
Organizer
12th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information (Nasu, Tochigi, Japan, September 27-29, 2023)
Int'l Joint Research
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[Presentation] Creating quantum sensors in hBN using He ion microscopy2023
Author(s)
Hao Gu, Moeta Tsukamoto, Yuki Nakamura, Shu Nakaharai, Takuya Iwasaki, Kenji Watanabe, Takashi Taniguchi, Shinichi Ogawa, Yukinori Morita, Kento Sasaki, and Kensuke Kobayashi
Organizer
12th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information (Nasu, Tochigi, Japan, September 27-29, 2023)
Int'l Joint Research
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[Presentation] Development of Quantum Sensing under High Pressure: Visualization of Pressure and Magnetic Field2023
Author(s)
yotaro Suda, Kento Sasaki, Kensuke Kobayashi, Kenshin Uriu, Misaki Sasaki, Mari Einaga, and Katsuya Shimizu
Organizer
12th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information (Nasu, Tochigi, Japan, September 27-29, 2023)
Int'l Joint Research
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[Presentation] Enantiopure crystal growth of chiral inorganic compounds2023
Author(s)
Y. Kousaka, D. Koizumi, T. Yamamoto, R. Saki, T. Sayo, H. Shishido, Y. Togawa
Organizer
QLC2023 (Hokkaido Univ., Sapporo, Japan, August 8-10, 2023)
Int'l Joint Research
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[Presentation] Spiral Band Structure Hidden in the bulk Chiral Crystal NbSi22023
Author(s)
C. Zhang, K. Miyamoto, T. Shishidou, R. Amano, T. Sayo, C. Shimada, Y. Kousaka, M. Weinert, Y. Togawa, T. Okuda
Organizer
MRM2023, A-2: Chirality in materials (Kyoto, Japan, December 11-16, 2023)
Int'l Joint Research
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[Presentation] Enantiopure crystal growth and chirality detection in chiral inorganic compounds over centimeter long2023
Author(s)
Y. Kousaka, D. Koizumi, T. Yamamoto, R. Saki, T. Sayo, H. Shishido, Y. Togawa
Organizer
MRM2023, A-2: Chirality in materials (Kyoto, Japan, December 11-16, 2023)
Int'l Joint Research
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[Presentation] Study of charge density waves in rare-earth tritellurides by time-resolved ARPES with wavelength-tunable pump2023
Author(s)
Kecheng Liu, Takeshi Suzuki, Yigui Zhong, Teruto Kanai, Jiro Itatani, Uwe Bovensiepen, Linda Ye, Maya Martinez, Anisha Singh, Ian Fisher, Kozo Okazaki
Organizer
日本物理学会 第78回年次大会(東北大学、2023年9月16日-19日)
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