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J-GLOBAL ID：201801009172690551 Update date: Feb. 26, 2025

Ienaga Koichiro

イエナガコウイチロウ | Ienaga Koichiro

Affiliation and department：
Job title： Associate Professor

Research field (2)： Thin-film surfaces and interfaces , Magnetism, superconductivity, and strongly correlated systems

Research keywords (6)： low temperature physics , superconductivity , 熱電効果 , 非平衡現象 , scanning tunneling microscope , nano structure

Research theme for competitive and other funds (7)：

2023 - 2025 熱電トレードオフの打破を目指した非平衡熱電計測法の開発
2023 - 2024 超伝導磁束量子のフロー構造制御による熱電トレードオフの打破
2020 - 2023 Investigation of quantum critical phenomena in two-dimensional superconductors by thermoelectric response
2019 - 2019 Detection of Bose-Einstein condensation of superconducting vortices by measuring thermal response of a two-dimensional superconductor at very low temperature
2017 - 2019 Exploring the quantum condensation of vortices in a two-dimensional superconductor using thermoelectric effect measurements

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Papers (41)：

Koichiro Ienaga, Yutaka Tamoto, Masahiro Yoda, Yuki Yoshimura, Takahiro Ishigami, Satoshi Okuma. Broadened quantum critical ground state in a disordered superconducting thin film. Nature Communications. 2024. 15. 2388 (pp.1-7)
S. Maegochi, K. Ienaga, S. Okuma. Evidence of second-order transition and critical scaling for the dynamical ordering transition in current-driven vortices. Scientific Reports. 2024. 14. 1
S. Maegochi, K. Ienaga, S. Okuma. Kibble-Zurek Mechanism for Dynamical Ordering in a Driven Vortex System. Physical Review Letters. 2022. 129. 22. 227001(pp.1-6)
R Ueno, K Ienaga, S Maegochi, H Shishido, S Okuma. Dc vortex-flow resistivity in an epitaxially grown MgB₂ film probed by pulsed current measurements. Journal of Physics: Conference Series. 2022. 2323. 1. 012013(pp.1-6)-012013
S. Maegochi, K. Ienaga, S. Okuma. Moving smectic phase and transverse mode locking in driven vortex matter. Physical Review Research. 2022. 4. 3. 033085(pp.1-7)

MISC (174)：

大森康志郎, 前垣内舜, 海老原鯛壱, 家永紘一郎, 家永紘一郎, 金子真一, 大熊哲. Kibble-Zurek mechanism for the dynamical ordering transition: Effects of asymmetric quench rates. 日本物理学会講演概要集(CD-ROM). 2024. 79. 2
IENAGA Koichiro, KIM Sunghun, MIYAMACHI Toshio, KOMORI Fumio. Atomic and Electronic Structures of the Monolayer Kondo Lattice CePt2/Pt(111). Vacuum and Surface Science. 2023. 66. 8. 461-466
海老原鯛壱, 前垣内舜, 大森康志郎, 家永紘一郎, 金子真一, 大熊哲. Kibble-Zurek mechanism for dynamical ordering of superconducting vortices: Test of universality. 日本物理学会講演概要集(CD-ROM). 2023. 78. 2
金子真一, 竹腰直樹, 前垣内舜, 三宅健太郎, 家永紘一郎, 坂田英明, 大熊哲. Change in vortex configuration associated with the reversible-irreversible transition: microscopic measurements. 日本物理学会講演概要集(CD-ROM). 2023. 78. 2
大森康志郎, 前垣内舜, 海老原鯛壱, 家永紘一郎, 金子真一, 大熊哲. Kibble-Zurek mechanism for the dynamical ordering transition studied by asymmetric quench rates. 日本物理学会講演概要集(CD-ROM). 2023. 78. 2

Books (5)：

Atomic and Electronic Structures of the Monolayer Kondo Lattice CePt2/Pt(111)
Vacuum and Surface Science 66(8) 461-466 2023
熱電効果で探る2次元超伝導体の量子臨界現象と渦糸状態
固体物理(アグネ技術センター) 55(12) 723-735 2020
Nano-modulated Electronic States Induced by Structural Strain in a Moiré Pattern on an Iron-nitride Atomic Layer
Vacuum and Surface Science 61(11) 716-721 2018
Hydrogen absorption into metal via quantum tunneling
Kotaibutsuri 53(6) 317-327 2018
ナノサイズ強磁性金属における近藤効果の研究
九州大学低温センターだより (7) 2-7 2013

Lectures and oral presentations (18)：

熱電効果で探る2次元超伝導体の磁束状態:量子相転移と非平衡相転移
(金沢物性セミナー 2024)
熱電効果で探る超伝導磁束の量子相転移と非平衡相転移
(第27回界面スピン軌道研究会 2024)
熱電効果で探る2次元超伝導体の量子相転移と非平衡相転移
(金沢大学低温物性研究会 2024)
Kibble-Zurek mechanism for dynamical phase transition in driven superconducting vortices
(2024)
STM/STS で見る原子層物質(グラフェン・窒化鉄)のナノ構造化による電子状態変調
(第2回低次元物質科学研究会 2024)

Professional career (1)：

Work history (6)：

2024/04 - 現在 Yamaguchi University Graduate School of Sciences and Technology for Innovation Associate Professor
2015/10 - 2024/03 Tokyo Institute of Technology Department of Physics assistant professor
2014/04 - 2015/09 Institute for Solid State Physics, The University of Tokyo Project Researcher
2013/04 - 2014/03 Kyushu University Department of Applied Quantum Physics Research Fellowship for Young Scientists(PD)
2012/04 - 2013/03 九州大学大学院日本学術振興会特別研究員(DC2)

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Committee career (4)：

Awards (6)：

2023/06 - 東京工業大学 2023年度あすなろ研究奨励金「超伝導磁束量子のフロー構造制御による熱電トレードオフの打破」
2022/02 - 日本表面真空学会講演奨励賞若手研究者部門「単層近藤格子CePt6/Pt(111)の構造評価と電子状態観測」
2019/01 - 東京工業大学 H30(第1回)大隅良典基礎研究支援「2次元超伝導薄膜の極低温下熱応答測定による渦糸ボース凝縮の検出」
2012/04 - 九州大学学生後援会学術研究賞
2011/08 - 26th International Conference on Low Temperature Physics (LT-26) Best Poster Award

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Association Membership(s) (3)：

応用物理学会 , The Japan Society of Vacuum and Surface Science , THE PHYSICAL SOCIETY OF JAPAN

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