Realization of organic semiconductor lasers and their improvement

• Project/Area Number: 18H03883
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 30:Applied physics and engineering and related fields
• Research Institution: Tohoku University
• Principal Investigator: 谷垣 勝己 東北大学, 材料科学高等研究所, 名誉教授 (60305612)
• Co-Investigator(Kenkyū-buntansha): 下谷 秀和 東北大学, 理学研究科, 准教授 (60418613)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥43,680,000 (Direct Cost: ¥33,600,000、Indirect Cost: ¥10,080,000); Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2020: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000); Fiscal Year 2019: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000); Fiscal Year 2018: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
• Keywords: 有機半導体 / 両極性伝導 / 電界発光素子 / レーザ発振 / ヘテロ電極 / レーザ / 電界効果型トランジスタ / 光増幅共振器 / 電界発光 / 両極性キャリヤ / 電界効果トランジスタ / 発光素子 / 電界駆動モード / 光学駆動モード / 電場駆動 / 光学特性 / 電子材料 / 電子デバイス / 物性基礎論

Outline of Annual Research Achievements

電場駆動型の有機半導体レーザの研究の概念は提案され、実現に向けてさまざまな挑戦が試みられたものの、成功に至らなかった。本研究では、有機半導体レーザ発振を電流駆動で実現する事を目標として研究を遂行した。電場駆動の有機半導体レーザ（el-OSCL)実現のためには、デバイス構造の技術革新が必要であり、電界発光素子（Electroluminescence：EL)がレーザ（Electroluminescence　Laser: ELL)として確認されるためには、3つの基本的な実験データを示す必要がある：(1)レーザの閾値---注入された電荷粒子数(N)と発光強度(I)との関係に明確な閾値が存在して、閾値を境として非線形な発光強度が増加現象。(2)急峻な発光スペクトラム精鋭化---閾値を越えると一つの発光波長が選択されて、発光スペクトル幅が急激に狭窄化する現象。(3)共振器増幅---共振器構造で反復増幅されている現象を示す実験的証拠。本研究では、仕事関数の小さいCa/CsF（電子注入電極）と大きいAu（ホール注入電極）のヘテロ電極構造を、高い両極性キャリアの注入/伝達機能と高発光機能を有する光学媒体となる有機半導体（BP3T)に適用する事により、電界駆動レーザー発振の確実な実験的証拠を得た。また、レーザ発振における物理的な基本現象を議論するために、(A)ファブリペロー型共振器構造と(B)分布帰還型（DFB型）共振器構造を比較する実験において、光学励起モードと電流励起モード両方を比較した。結果として、世界で最初の有機半導体における電流励起レーザ発振現象を確認する事に成功した。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Jozef Stefan Institute(スロベニア)
• [Int'l Joint Research] IISER(インド)
• [Int'l Joint Research] IISERs(インド)
• [Journal Article] Large thermopower in topological surface state of Sn-BSTS topological insulators: Thermoelectrics and energy-dependent relaxation times (2021)
  • Author(s): Stephane Yu Matsushita, Kakeru Ichimura, Khuong Kim Huynh, and Katsumi Tanigaki
  • Journal Title: Physical Review Materials Volume: 5 Pages: 1-8
  • DOI: 10.1103/physrevmaterials.5.014205
  • Peer Reviewed
• [Journal Article] Electron correlations and charge segregation in layered managanese pnictide antiferromagnets showing anomalously large magnetoresistance (2021)
  • Author(s): N. Jansa, K.-K. Huynh, T. Ogasawara, M. Klanjsek, P. Jeglic, P. Carretta, K. Tanigaki, and D. Arcon
  • Journal Title: Physical Review B Volume: 103 Pages: 1-7
  • DOI: 10.1103/physrevb.103.064422
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Large-proximity-induced anomalous Hall effect in Bi2－xSbxTe3－ySey/Cr2Ge2Te6 heterostructure prepared by film transfer method (2021)
  • Author(s): Kazumasa Nagata, Stephane Yu Matsushita, Xin C. Pan, Kim Khuong Hyunh, Katsumi Tanigaki
  • Journal Title: Physical Review Materials Volume: 5 Pages: 1-7
  • DOI: 10.1103/physrevmaterials.5.024208
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Large negative magnetoresistance in the antiferromagnet BaMn2Bi2 (2021)
  • Author(s): Ogasawara Takuma、Huynh Kim-Khuong、Tahara Time、Kida Takanori、Hagiwara Masayuki、Ar?on Denis、Kimata Motoi、Matsushita Stephane Yu、Nagata Kazumasa、Tanigaki Katsumi
  • Journal Title: Phys. Rev. B Volume: 103 Pages: 1-10
  • DOI: 10.1103/physrevb.103.125108
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Laser oscillation of an organic distributed-feedback laser at the edge of a mini stopband (2021)
  • Author(s): Taiki Miura, Thangavel Kanagasekaran, Hidekazu Shimotani, and Katsumi Tanigaki
  • Journal Title: Applied Physics Express Volume: 14
  • DOI: 10.35848/1882-0786/abfb88
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Lattice-shifted nematic quantum critical point in FeSe1－xSx (2021)
  • Author(s): S. Chibani, D. Farina, P. Massat, M. Cazayous, A. Sacuto, T. Urata, Y. Tanabe, K. Tanigaki, A. E. Bhmer, P. C. Canfield, M. Merz, S. Karlsson, P. Strobel, P. Toulemonde, I. Paul and Y. Gallais
  • Journal Title: J. Phys. Soc. Jpn. Volume: 6 Issue: 9 Pages: 094704-094704
  • DOI: 10.7566/jpsj.90.094704
  • ISSN: 0031-9015, 1347-4073
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Separate tuning of nematicity and spin fluctuations to unravel the origin of superconductivity in FeS (2020)
  • Author(s): S.-H. Baek,, J. M. Ok, J. S. Kim, S. Aswartham,I. Morozov, D. Chareev, T. Urata, K. Tanigaki, Y. Tanabe, B. Buchner, D. V. Efremov
  • Journal Title: NPJ Quantum Materials Volume: 5 Pages: 8-8
  • DOI: 10.1038/s41535-020-0211-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Site occupancy preference, electrical transport property and thermoelectric performance of Ba8Cu6xGe40+x single crystals grown by using different metal fluxes (2020)
  • Author(s): Jiazhen Wu, Jingtao Xu and Katsumi Tanigaki
  • Journal Title: Materials Advances Volume: 1 Pages: 2953-2963
  • DOI: 10.1039/d0ma00721h
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Negative and positive magnetoresistance in the itinerant antiferromagnet BaMn2Pn2 (Pn = P, As, Sb, and Bi) (2019)
  • Author(s): Huynh Kim-Khuong、Ogasawara Takuma、Kitahara Keita、Tanabe Yoichi、Matsushita Stephane Yu、Tahara Time、Kida Takanori、Hagiwara Masayuki、Arcon Denis、Tanigaki Katsumi
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 195111-1
  • DOI: 10.1103/physrevb.99.195111
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ultrathin films of three-dimensional topological insulators by vapor-phase epitaxy: Surface dominant transport in a wide temperature range as revealed by measurements of the Seebeck (2019)
  • Author(s): Matsushita Stephane Yu, Huynh Kim-Khuong, Tanigaki Katsumi
  • Journal Title: Physical Review B Volume: 99 Pages: 195302-195302
  • DOI: 10.1103/physrevb.99.195302
  • Peer Reviewed
• [Journal Article] Separation in the Roles of Carrier Transport and Light Emission in Light-Emitting Organic Transistors with a Bilayer Configuration (2019)
  • Author(s): Hui Shang, Hidekazu Shimotani,Thangavel Kanagasekaran, Katsumi Tanigaki
  • Journal Title: ACS Applied Materials & Interfaces Volume: 11 Pages: 20200-20204
  • DOI: 10.1021/acsami.9b02298
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quantum Hall effect of Dirac surface states of as-grown single crystal flakes in Sn0.02- Bi1.08Sb0.9Te2S without gate control (2019)
  • Author(s): Ichimura Kakeru, Matsushita Stephane Yu, Huynh Kim-Khuong, Tanigaki Katsumi
  • Journal Title: Applied Physics Letters Volume: 115 Pages: 052104-052104
  • DOI: 10.1063/1.5112120
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Increased Curie temperature and enhanced perpendicular magneto anisotropy of Cr2Ge2Te6/NiO heterostructures (2019)
  • Author(s): H. Idzuchi, A. E. Llacsahuanga Allcca, X. C. Pan, K. Tanigaki, and Y. P. Chen
  • Journal Title: Applied Physics Letters Volume: 115 Pages: 232403-232403
  • DOI: 10.1063/1.5130930
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 遍歴反強磁性物質BaMn2Pn2（Pn=As, Sb, Bi) (2019)
  • Author(s): 谷垣勝己、Khuong K. Huynh, 松下ステファン悠
  • Journal Title: 東北大学極低温科学センターだより: Volume: 5 Pages: 25-28
• [Journal Article] Itinerant Antiferromagnet BaMn2Pn2(Pn=As, Sb, and Bi) (2019)
  • Author(s): K-K. Huynh, T. Ogasawara, K. Kitahara, Y. Tanabe, S. Y. Matsushita, T. Tahara, T. Kida, M. Hagiwara, D. Arcon and K. Tanigaki
  • Journal Title: Selected Topics in 2018 Research Highlight at HFLSM, Institute for Materials Reserch, Tohoku University Volume: 4 Pages: 15-18
• [Journal Article] Three-dimensional porous graphene networks expand graphene-based electronic device application (2018)
  • Author(s): Y. Ito, Y. Tanabe, K. Sugawara, M. Koshino, T. Takahashi, K. Tanigaki, H. Aoki, M. Chen
  • Journal Title: Physical Chemistry Chemical Physics Volume: 20 Pages: 6024-6033
  • DOI: 10.1039/c7cp07667c
  • NAID: 120007134239
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Carrier-doped aromatic hydrocarbons: a new platform in condensed matter chemistry and physics (2018)
  • Author(s): satoshi heguri, katsumi tanigaki
  • Journal Title: Dalton Transaction. Volume: 47 Pages: 2881-2895
  • DOI: 10.1039/c7dt03745g
  • Peer Reviewed / Open Access
• [Journal Article] Manifestation of vibronic dynamics in infrared spectra of Mott insulating fullerides (2018)
  • Author(s): Yuki Matsuda, Naoya Iwahara, Katsumi Tanigaki, Liviu F. Chibotaru
  • Journal Title: Physical Review B Volume: 98
  • DOI: 10.1103/physrevb.98.165410
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Superconductivity observed in the vicinity of Mott insulating states in A3C60 (2022)
  • Author(s): Katsumi Tanigaki, Yuki Matsuda, Satoshi Heguri
  • Organizer: APS March Meeting 2022
  • Int'l Joint Research
• [Presentation] Gate-Tunable Anomalous Hall Effect in Van der Waals ferromagnetic insulator-topological insulator heterostructure (2022)
  • Author(s): Andres E Llacsahuanga Allcca, Xing-Cheng Pan, Katsumi Tanigaki, Yong Chen
  • Organizer: APS March Meeting 2022
  • Int'l Joint Research / Invited
• [Presentation] FET構造を利用した有機半導体ルブレンの熱電物性 (2022)
  • Author(s): Qiu Lingwei, 松下ステファン悠, 下谷秀和, 谷垣勝己
  • Organizer: 日本物理学会第77回年次大会
• [Presentation] C60超電導体から見たモット絶縁体近傍で観測される超電導 (2021)
  • Author(s): 谷垣勝己、松田裕貴、平郡 諭
  • Organizer: 日本物理学会2021年秋季大会
• [Presentation] 熱電物性の磁場依存性から見たトポロジカル絶縁体表面の輸送特性 (2021)
  • Author(s): 松下ステファン悠, 永田一将, Kim Khuong Huynh, 谷垣勝己
  • Organizer: 日本物理学会2021年秋季大会
• [Presentation] A new electrode for both hole and electron ambipolar injection via surface nanostructure control in carbon-based semiconductors (2021)
  • Author(s): Katsumi Tanigaki, Thangavel Kanagasekaran, and Hidekazu Shimotani
  • Organizer: The 8th Asian Conference on Crystal Growth and Crystal (CGCT-8)
  • Int'l Joint Research
• [Presentation] 有機半導体レーザの利得損失と共振状態 (2021)
  • Author(s): 谷垣勝己, カナガセカラン, サンガベル, 下谷秀和
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] BaMn2Bi2における伝導率の磁場・温度に対するスケール (2021)
  • Author(s): 小笠原拓磨, Khuong Kim Huynh, 松下ステファン悠, 谷垣勝己
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] 転写法を用いて作成したBi1.5Sb0.5Te1.7Se1.3/Cr2Ge2Te6における磁気抵抗効果の観測 (2021)
  • Author(s): 永田一将, 松下ステファン悠, Xing Chen Pan, Kim Khuong Huynh, 谷垣勝己
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] 有機半導体レーザの利得損失と共振状態 (2021)
  • Author(s): 谷垣 勝己、Kanagasekaran Thangavel、下谷 秀和
  • Organizer: 第68回応用物理学会春季学術講演会
• [Presentation] 有機DFBレーザーにおけるミニストップバンド端でのレーザー発振 (2021)
  • Author(s): 下谷 秀和、三浦 大輝、カナガセカラン サンガベル、谷垣 勝己
  • Organizer: 第68回応用物理学会春季学術講演会
• [Presentation] Electron-phonon and electron-electron interactions in electron doped aromatic carbon materials viewed from electrical transport (2021)
  • Author(s): Katsumi Tanigaki, Yuki Matsuda, Satoshi Heguri
  • Organizer: APS March Meeting 2021
  • Int'l Joint Research
• [Presentation] Wrinkle formation and its effect on the magnetic properties of Cr2Ge2Te6/NiO heterostructures (2021)
  • Author(s): Andres Llacsahuanga Allcca, Hiroshi Idzuchi, Xing Chen Pan, Katsumi Tanigaki, Yong Chen
  • Organizer: APS March Meeting 2021
  • Int'l Joint Research / Invited
• [Presentation] 電流駆動有機半導体レーザ：電場励起と光励起 (2020)
  • Author(s): 谷垣 勝己、カナガセカラン サンガベル、三浦大輝、下谷 秀和
  • Organizer: 第81回応用物理学会秋季学術講演会
• [Presentation] 転写法によるBi1.5Sb0.5Te1.7Se1.3/Cr2Ge2Te6ヘテロ構造の作製と異常ホール効果の観測 (2020)
  • Author(s): 永田一将, 松下ステファン悠, Xin Chen Pan, Kim Khuong Huynh, 谷垣勝己
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] The large magnetoresistance in BaMn2Bi2 antiferromagnets and its possible origins (2020)
  • Author(s): Kim-Khuong Huynh, Takuma Ogasawara, Stephane Yu Matsushita, Motoi Kimata, Time Tahara, Takanori Kida, Masayuki Hagiwara, Katsumi Tanigaki
  • Organizer: 日本物理学会2020年秋季大会
• [Presentation] 電流駆動有機半導体レーザ：電流励起と光励起 (2020)
  • Author(s): 谷垣 勝己、三浦大輝、 Thangavel Kanagasekaran、下谷 秀和
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] 電流駆動有機半導体レーザ (2020)
  • Author(s): 谷垣 勝己、Kanagasekaran Thangavel、下谷 秀和
  • Organizer: 第69回高分子討論会
  • Invited
• [Presentation] Three-Dimensional Topological Insulators and Applications (2020)
  • Author(s): K. Tanigaki
  • Organizer: QPQIS 2020 (International Symposium on Quantum Physics and Quantum Information Sciences)
  • Int'l Joint Research / Invited
• [Presentation] 炭素系分子超伝導体の構造と物性 (2020)
  • Author(s): 谷垣 勝己
  • Organizer: つくば-柏-本郷 超伝導かけはしプロジェクト ワークショップ
• [Presentation] 有機半導体レーザ：レーザ発振とASE (2020)
  • Author(s): 谷垣 勝己、三浦 大輝、下谷 秀和
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 2次元磁性体Cr2Ge2Te6界面の誘起する強磁性転移温度上昇 (2020)
  • Author(s): 井土 宏、Llacsahuanga Allcca Andres 、Pan Xing-chen、谷垣 勝巳、Chen Yong P
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 有機半導体レーザ：レーザ発振とASE (2020)
  • Author(s): 谷垣勝己, カナガセカラン サンガベル, 三浦大輝, 下谷秀和
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] 熱電係数によるSn0.02-Bi1.08Sb0.9Te2S表面状態の散乱機構の解明 (2020)
  • Author(s): 松下ステファン悠, 市村翔, 永田一将, Kim-Kuong Huynh, 谷垣勝己
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] Electron-phonon and electron-electron interactions in electron doped aromatic carbon materials viewed from electrical transport (2019)
  • Author(s): Katsumi Tanigaki
  • Organizer: Study of matter at Extreme Condition (SMEC2019)
  • Int'l Joint Research / Invited
• [Presentation] A new concept of electrode for higly efficient ambipolar carrier injection in organic semiconductors (2019)
  • Author(s): Katsumi Tanigaki
  • Organizer: 2019 MRS Spring Meeting & Exhibit
• [Presentation] High Quality Single Crystal Thin Films of Three-Dimensional Topological Insulators and Applications (2019)
  • Author(s): Katsumi Tanigaki
  • Organizer: AIMR Workshop on Quantum Materials and Spintronics: Spin, Topology and Superconductivity
• [Presentation] BaMn2Pn2 (Pn=As, Sb and Bi)における磁場誘起による電荷融解 (2019)
  • Author(s): 谷垣 勝己
  • Organizer: J-Physics地域研究会 - 札幌
• [Presentation] 高品質3次元トポロジカル絶縁体の合成と応用 (2019)
  • Author(s): 谷垣 勝己
  • Organizer: 日本物理学会2019年秋季大会
  • Invited
• [Presentation] 電界駆動有機半導体レーザ：帰還分布型FETにおける光励起と電流励起の比較 (2019)
  • Author(s): 谷垣勝己, カナガセカラン, サンガベル, 三浦大輝, 下谷秀和
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Sn-Bi1.1Sb0.9Te2Sにおける表面ディラック電子による量子ホール効果とゼーベック係数 (2019)
  • Author(s): 松下ステファン悠, 市村翔, 永田一将, Kim-Kuong Huynh, 谷垣勝己
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] BaMn2Bi2における面間輸送特性 (2019)
  • Author(s): 小笠原拓磨, Huynh Kim-Khuong, 松下ステファン悠, 田原大夢, 木田孝則, 萩原政幸, 谷垣勝己
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Negative and postive magnetoresistance in BaMn2Pn2 antiferromagnets (2019)
  • Author(s): K.-Khuong Huynh, T. Ogasawara, Stephane Yu Matsushita, T. Tahara, T. Kida, M. Hagiwara, K. Tanigaki
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] 有機半導体レーザ：光励起と電流励起 (2019)
  • Author(s): 谷垣 勝己、カナガセカラン サンガベル、三浦 大輝、下谷 秀和
  • Organizer: 第80回応用物理学会秋季学術講演会
• [Presentation] 電流駆動有機半導体レーザの実現に向けて (2019)
  • Author(s): 谷垣勝己
  • Organizer: 薄膜材料デバイス研究会 第16回研究集会「新時代に向けた薄膜材料のデバイス技術」
  • Invited
• [Presentation] Thermoelectric Materials with Large Anharmonic Phonons (2019)
  • Author(s): Katsumi Tanigaki and Jiazhen Wu
  • Organizer: 2019 MRS Fall Meeting & Exhibit
• [Presentation] Single Crystal Thin Films of Three-Dimensional Topological Insulators via Non-catalytic Vapor Phase Epitaxial Crystal Growth and Applications (2019)
  • Author(s): K. Tanigaki, S. Y. Matsushita, Y. Tanabe, K. K. Khuong
  • Organizer: MRS-J MATERIALS RESEARCHMEETING 2019
• [Presentation] Electron-Phonon and Electron-Electron Interactions in Electron Doped Aromatic Carbon Materials viewed from Electrical Transport (2019)
  • Author(s): K. Tanigaki, S. Heguri, Y. Matsuda
  • Organizer: MRS-J MATERIALS RESEARCHMEETING 2019
  • Int'l Joint Research / Invited
• [Presentation] Development of Organic-semiconductor injection laser (2019)
  • Author(s): Hidekazu SHIMOTANI, Kanagasekaran THANGAVEL, Shun ONUKI, Taiki MIURA, Katsumi TANIGAKI
  • Organizer: MRS-J MATERIALS RESEARCHMEETING 2019
  • Int'l Joint Research / Invited
• [Presentation] Giant magnetoresistance in BaMn2Pn2 (Pn = As, Sb, Bi) (2019)
  • Author(s): Khuong Huynh,Takuma Ogasawara, Stephane Yu Matsushita, Taimu Tahara, Takanori Kida, Masayuki Hagiwara, Denis Arcon, Katsumi Tanigaki
  • Organizer: APS March Meeting 2019, Boston Convention and Exhibition Center (Boston, USA)
  • Int'l Joint Research
• [Presentation] Hall effects in giant magnetoresistance system BaMn2Bi2 (2019)
  • Author(s): Takuma Ogasawara, Khuong Huynh, Stephane Yu Matsushita, Taimu Tahara, Takanori Kida, Masayuki Hagiwara, Denis Arcon, Katsumi Tanigaki
  • Organizer: APS March Meeting 2019, Boston Convention and Exhibition Center (Boston, USA)
  • Int'l Joint Research
• [Presentation] A new concept of electrodes for ambipolar carrier injection in organic semiconductors (2019)
  • Author(s): Katsumi Tanigaki, Thangavel Kanagasekaran, Syun Onuki, Taiki Miura, Hidekazu Shimotani
  • Organizer: APS March Meeting 2019, Boston Convention and Exhibition Center (Boston, USA)
  • Int'l Joint Research
• [Presentation] Comparative studies on fluorescent emission of organic semiconductors between optical and electrical pumping (2019)
  • Author(s): Taiki Miura, Thangavel Kanagasekaran, Hidekazu Shimotani, Syun Onuki, Katsumi Tanigaki
  • Organizer: APS March Meeting 2019, Boston Convention and Exhibition Center (Boston, USA)
  • Int'l Joint Research
• [Presentation] Seebeck effect in 3D topological insulator thin films (2019)
  • Author(s): Stephane Yu Matsushita, Khuong Huynh, Katsumi Tanigaki
  • Organizer: APS March Meeting 2019, Boston Convention and Exhibition Center (Boston, USA)
  • Int'l Joint Research
• [Presentation] Manifestation of vibronic dynamics in infrared spectra of Mott insulating fullerides (2019)
  • Author(s): Naoya Iwahara, Yuki Matsuda, Katsumi Tanigaki
  • Organizer: APS March Meeting 2019, Boston Convention and Exhibition Center (Boston, USA)
  • Int'l Joint Research
• [Presentation] 有機半導体レーザ発振における電流励起と光励起の相関 (2019)
  • Author(s): 谷垣 勝己、カナガセカラン サンガベル、下谷 秀和、小貫 駿、三浦 大輝
  • Organizer: 応用物理学会春季学術講演会、東京工業大学（東京）
• [Presentation] FET構造による電流注入型有機半導体DFBレーザー (2019)
  • Author(s): 下谷 秀和、カナガセカラン サンガベル、小貫 駿、三浦 大輝、谷垣 勝己
  • Organizer: 応用物理学会春季学術講演会、東京工業大学、（東京）
• [Presentation] 電流注入型有機半導体DFBレーザー (2019)
  • Author(s): 下谷秀和、カナガセカランサンガベル、小貫駿、三浦大輝、谷垣勝己
  • Organizer: 日本物理学会第74回年次大会、九州大学（福岡市）
• [Presentation] 窒素ドープした3次元ナノ多孔質グラフェンの輸送特性 (2019)
  • Author(s): 田邉洋一、伊藤良一、谷垣勝己
  • Organizer: 日本物理学会第74回年次大会、九州大学（福岡市）
• [Presentation] 有機半導体レーザ発振における電流励起と光励起の相関 (2019)
  • Author(s): 谷垣勝己、サンガベルカナガセカラン、下谷秀和、小貫駿、三浦大輝
  • Organizer: 日本物理学会第74回年次大会、九州大学（福岡市）
• [Presentation] 3次元トポロジカル絶縁体Sn-BiSｂTe2Sの電子輸送特性 (2019)
  • Author(s): 市村翔、松下ステファン悠、永田一秀、谷垣勝己
  • Organizer: 日本物理学会第74回年次大会、九州大学（福岡市）
• [Presentation] Preparation of 3D topological insulator thin films by vapor phase epitaxial growth and its application to thermoelectrics (2019)
  • Author(s): K. Tanigaki
  • Organizer: The Second International Workshop Emergent Condensed-Matter Physics (ECPM2019), Sakura Art and Calture Hall （Higashi Hiroshima）
  • Int'l Joint Research
• [Presentation] Single crystal thin films of three-dimensional topological insulators via non-catalytic vapor phase epitaxial crystal growth (2019)
  • Author(s): Katsumi Tanigaki (Key Note Speaker)
  • Organizer: Study of Matter at Extreme Conditions (SMEC2019), Conference Center, Celebrity Equinox (Miami, USA)
  • Int'l Joint Research / Invited
• [Presentation] Electron-phonon and electron-electron interactions in electron doped aromatic carbon materials viewed from electrical transport (2019)
  • Author(s): Katsumi Tanigaki (Invited)
  • Organizer: Study of Matter at Extreme Conditions (SMEC2019), Conference Center, Celebrity Equinox (Miami, USA)
  • Int'l Joint Research / Invited
• [Presentation] A new concept of electrodes for ambipolar carrier injection in organic semiconductors (2018)
  • Author(s): Katsumi Tanigaki, Thangavel Kanagasekaran, Hidekazu Shimotani
  • Organizer: E‐MRS 2018 Spring Meeting (Strasbourg, France)
  • Int'l Joint Research
• [Presentation] Interplay between electron-phonon and electron-electron interactions in electron doped aromatic carbon materials viewed from electrical transport probe (2018)
  • Author(s): K. Tanigaki, S. Heguri, Y. Matsuda
  • Organizer: 12th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S HTSC 2018) ( Beijing, China)
  • Int'l Joint Research
• [Presentation] 有機半導体の進展： 現状と将来 (まとめと今後の展望) (2018)
  • Author(s): 谷垣勝己
  • Organizer: 日本物理学会2018年秋季大会、同志社大学（京田辺市）
  • Invited
• [Presentation] Bi2-xSbxTe3-ySey薄膜の熱電特性：電界効果を用いたフェルミ準位の制御とその影響 (2018)
  • Author(s): 松下ステファン悠、Khuong Kim Huynh、田邉洋一、谷垣勝己
  • Organizer: 日本物理学会2018年秋季大会、同志社大学（京田辺市）
• [Presentation] 3次元トポロジカル絶縁体Sn0.02Bi1.08Sb0.9Te2Sの電子輸送特性：電気抵抗、ホール抵抗、磁気抵抗及びゼーベック係数の複合測定 (2018)
  • Author(s): 市村翔、松下ステファン悠, 谷垣勝己
  • Organizer: 日本物理学2018年秋季大会、同志社大学（京田辺市）
• [Presentation] BaMn2Bi2におけるホール抵抗の面内磁場依存性 (2018)
  • Author(s): 小笠原拓磨、Khuong Kim Huynh、谷垣勝己、松下ステファン悠、田原大夢、木田孝則、萩原正幸
  • Organizer: 日本物理学会2018年秋季大会、同志社大学（京田辺市）
• [Presentation] Giant magnetoresistance in magnetic multipolar BaMn2Pn2 (Pn = As, Sb, Bi) (2018)
  • Author(s): K.-Khuong Huynh, T. Ogasawara, T. Tahara, T. Kida, M. Hagiwara, K. Tanigaki
  • Organizer: 日本物理学会2018年秋季大会, 同志社大学（京田辺市）
• [Presentation] 電気輸送および磁気特性からみたモット絶縁体領域のA3C60超電導体の電子状態 (2018)
  • Author(s): 谷垣勝己、平郡諭、松田祐貴
  • Organizer: 日本物理学会2018年秋季大会、同志社大学（京田辺市）
• [Presentation] 電流駆動有機半導体レーザの構造と物性 (2018)
  • Author(s): 谷垣勝己、下谷秀和、Thangavel Kanagasekara、小貫駿、三浦大輝
  • Organizer: 日本物理学会2018年秋季大会、同志社大学（京田辺市）
• [Presentation] 電気輸送特性からみたA3C60のモット境界における電子状態 (2018)
  • Author(s): 谷垣 勝己、松田 祐貴、平郡 諭
  • Organizer: 第55回フラーレン・ナノチューブ・グラフェン総合シンポジウム、東北大学（仙台市）
• [Presentation] 電場駆動有機半導体レーザの特性 (2018)
  • Author(s): 谷垣 勝己、カナガセカラン サンガベル、小貫 駿、三浦 大輝、下谷 秀和
  • Organizer: 第79回応用物理学会秋季学術講演会、名古屋国際会議場（名古屋市）
• [Presentation] 電流励起と光励起有機半導体レーザーの比較 (2018)
  • Author(s): 下谷 秀和、カナガセカラン サンガベル、小貫 駿、三浦 大輝、谷垣 勝己
  • Organizer: 第79回応用物理学会秋季学術講演会、名古屋国際会議場（名古屋市）
• [Presentation] Itinerant antiferromagnetic BaMn2Pn2 showing both negative and positive large magnetoresistance, (2018)
  • Author(s): Katsumi Tanigaki, Khuong Kim Huynh, Takuma Ogasawara, Keita Kitahara, Stephane Yu Matsushita, Taimu Tahara, Takanori Kida, Masayuki Hagiwara, Denis Arcon
  • Organizer: J-physics International Workshop University of Otago (Danieden, New Zealand)
  • Int'l Joint Research
• [Remarks] ナノ固体物理研究室、東北大学
  • URL: http://sspns.phys.tohoku.ac.jp/