Giant magnetoresistance in single molecular junctions

• Project/Area Number: 24685024
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Functional materials chemistry
• Research Institution: Osaka University
• Principal Investigator: YAMADA Ryo 大阪大学, 基礎工学研究科, 准教授 (20343741)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥26,390,000 (Direct Cost: ¥20,300,000、Indirect Cost: ¥6,090,000); Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2013: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000); Fiscal Year 2012: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
• Keywords: 単分子接合 / 磁気抵抗効果 / 分子エレクトロニクス / スピントロニクス / 熱起電力 / 単分子エレクトロニクス

Outline of Final Research Achievements

This study was aimed at developing single molecular spintronics to make use of spin degree of freedom, which will open a path to low energy consuming and fast electronic devices. Measurement techniques, such as magneto resistance and thermoelectricity, developed in this project, revealed the magneto-resistance loop of single molecular junction and existence of spin polarized conduction channel.The results obtained suggest that the single molecular junction is useful to develop nano-scale spintronic devices.

Research Products

• [Journal Article] Thermoelectric Measurements of Ni Nanojunctions (2013)
  • Author(s): SK Lee, R. Yamada and H. Tada
  • Journal Title: MRS Proceedings Volume: 1490 Pages: 139-144
  • DOI: 10.1557/opl.2013.317
  • Peer Reviewed / Open Access
• [Journal Article] Universal Temperature Crossover Behavior of Electrical Conductance in a Single Oligothiophene Molecular Wire (2012)
  • Author(s): SK. Lee, R. Yamada, S. Tanaka, GS. Chang, Y. Asai and H. Tada
  • Journal Title: ACS Nano. Volume: 6 Issue: 6 Pages: 5078-5082
  • DOI: 10.1021/nn3006976
  • Peer Reviewed
• [Presentation] 単分子膜によるトンネル接合素子の作製と伝達特性の活用 (2015)
  • Author(s): 山田 亮・山口 真理子・大戸 達彦・夛田 博一
  • Organizer: 日本化学会第95春季年会
  • Place of Presentation: 船橋市（日本大学船橋キャンパス）
  • Year and Date: 2015-03-26
  • Invited
• [Presentation] Conductance and thermopower of C82 and endohedral metallofullerene molecular junctions with Au electrodes (2015)
  • Author(s): Marius Buerkle, See Kei Lee, Ryo Yamada, Hirokazu Tada, and Yoshihiro Asai
  • Organizer: Deutsche Physikalische Gesellschaft Annual Meeting
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2015-03-20
• [Presentation] Thermoelectric Effect of Thiophene-based Tripodal Molecular Junctions (2015)
  • Author(s): SeeKei Lee, Yutaka Ie, Yoshio Aso, Ryo Yamada, Hirokazu Tada
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 平塚市（東海大学湘南キャンパス）
  • Year and Date: 2015-03-14
• [Presentation] Au/オリゴチオフェン/Au接合の非弾性トンネルスペクトル測定 (2015)
  • Author(s): 下店 隆史、Franchi Jimmy、田中 彰治、大戸 達彦、山田 亮、夛田 博一
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 平塚市（東海大学湘南キャンパス）
  • Year and Date: 2015-03-14
• [Presentation] 単層グラフェンを上部電極に利用した単分子膜素子の作製 (2015)
  • Author(s): 山口 真理子、生田 昂、金井 康、大戸 達彦、山田 亮、大野 恭秀、前橋 兼三、松本 和彦、夛田 博一
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 平塚市（東海大学湘南キャンパス）
  • Year and Date: 2015-03-14
• [Presentation] Ni-C60-Niスピンバルブ素子の第一原理計算 (2015)
  • Author(s): 大戸達彦、山田亮、夛田 博一
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 平塚市（東海大学湘南キャンパス）
  • Year and Date: 2015-03-14
• [Presentation] Stochastic resonance in non-linear current-voltage characteristics of self-assembled monolayers (2014)
  • Author(s): Mariko Yamaguchi, Tatsuhiko Ohto, Ryo Yamada and Hirokazu Tada
  • Organizer: Joint Winter School & Workshop for Interdisciplinary Research on Materials Science of JLU Giessen and Osaka University
  • Place of Presentation: Giessen University (Germany)
  • Year and Date: 2014-12-10
• [Presentation] Development of a Mechanically Controllable Break Junction Equipment for Low Temperature and High Magnetic Field Measurement (2014)
  • Author(s): Takashi Shimomise, Jimmy Franchi, Ryo Yamada, Hirokazu Tada
  • Organizer: Joint Winter School & Workshop for Interdisciplinary Research on Materials Science of JLU Giessen and Osaka University
  • Place of Presentation: Giessen University (Germany)
  • Year and Date: 2014-12-09
• [Presentation] Stochastic resonance with non-linear current-voltage characteristics of self-assembled monolayers (2014)
  • Author(s): Mariko Yamaguchi, Tatsuhiko Ohto, Ryo Yamada and Hirokazu Tada
  • Organizer: The 2014 Asian Conference on Nanoscience and Nanotechnology (AsiaNANO 2014)
  • Place of Presentation: Ramada Plaza Jeju Hotel, Jeju, Korea
  • Year and Date: 2014-10-28
• [Presentation] First-Principles Study of Thermoelectric Properties of Ni-Molecule-Ni Junction (2014)
  • Author(s): Tatsuhiko Ohto, See Kei Lee, Ryo Yamada and Hirokazu Tada
  • Organizer: The 2014 Asian Conference on Nanoscience and Nanotechnology (AsiaNANO 2014)
  • Place of Presentation: Ramada Plaza Jeju Hotel, Jeju, Korea
  • Year and Date: 2014-10-28
• [Presentation] First-principles calculation of molecular junctions with ferromagnetic electrodes for spintronics and thermoelectronics (2014)
  • Author(s): Tatsuhiko Ohto, See Kei Lee, Ryo Yamada and Hirokazu Tada
  • Organizer: Mini-Symposium on Recent progress in single molecule electronics and single molecule magnets
  • Place of Presentation: 大阪大学、日本
  • Year and Date: 2014-10-09
• [Presentation] Stochastic resonance in current-voltage characteristics of self-assembled organic monolayers (2014)
  • Author(s): Mariko Yamaguchi, Tatsuhiko Ohto, Ryo Yamada and Hirokazu Tada
  • Organizer: Mini-Symposium on Recent progress in single molecule electronics and single molecule magnets
  • Place of Presentation: 大阪大学、日本
  • Year and Date: 2014-10-09
• [Presentation] Ni-ベンゼンジチオール-Ni接合の熱起電力の第一原理計算 (2014)
  • Author(s): 大戸達彦，See Kei Lee，山田亮，夛田博一
  • Organizer: 第７５回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学
  • Year and Date: 2014-09-19
• [Presentation] メカニカルブレークジャンクション法によるポルフィリンダブルデッカー型単分子磁石の単分子電気計測 (2014)
  • Author(s): 炭谷宣登，Vanessa Timmerman，田中大輔，猪瀬朋子，田中啓文，石川直人，山田亮，夛田博一，小川琢冶
  • Organizer: 第７５回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学
  • Year and Date: 2014-09-17
• [Presentation] 多彩な配列を有するポルフィリンアレイの単一分子電気測定 (2014)
  • Author(s): 玉木孝，野坂長範，山田亮，夛田博一，小川琢治
  • Organizer: 第７５回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学
  • Year and Date: 2014-09-17
• [Presentation] 自己組織化単分子膜の非線形電流電圧特性と信号伝達特性 (2014)
  • Author(s): 山口真理子，大戸達彦，山田亮，夛田博一
  • Organizer: 第７５回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学
  • Year and Date: 2014-09-17
• [Presentation] Seebeck coefficient of single molecular junctions with gold and nickel electrodes (2014)
  • Author(s): Hirokazu Tada, See Kei Lee, Tatsuhiko Ohto, and Ryo Yamada
  • Organizer: 7th International Conference on Molecular Electronics
  • Place of Presentation: Strasbourg, France
  • Year and Date: 2014-08-26
• [Presentation] First-Principles Study of Thermoelectric Properties of Ni-Molecule-Ni Junctions (2014)
  • Author(s): Tatsuhiko Ohto, See Kei Lee, Ryo Yamada and Hirokazu Tada
  • Organizer: Computational Science Workshop 2014
  • Place of Presentation: Tsukuba
  • Year and Date: 2014-08-20
• [Presentation] Thermoelectric properties of molecular junctions with ferromagnetic electrodes (2014)
  • Author(s): Tatsuhiko Ohto, See Kei Lee, Ryo Yamada and Hirokazu Tada
  • Organizer: Gordon Research Conference: Electronic Processes on Organic Materials
  • Place of Presentation: Lucca, Italy
  • Year and Date: 2014-05-05
• [Presentation] Ni電極を用いた分子接合の熱電特性の第一原理計算 (2014)
  • Author(s): 大戸達彦、Lee See Kei、山田亮、夛田博一
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 平塚
• [Presentation] 単分子接合の熱起電力測定と電子状態の解明 (2014)
  • Author(s): 山田亮
  • Organizer: 日本化学会第94春季年会
  • Place of Presentation: 名古屋
  • Invited
• [Presentation] Thermoelectricity of C82 and Gd@C82 Molecular Junctions (2014)
  • Author(s): See Kei Lee，Marius Buerkle，山田亮，浅井美博，多田博一
  • Organizer: 第61回応用物理学会春季学術講演会
  • Place of Presentation: 相模原市,
• [Presentation] Ni 電極を用いた単分子接合の熱起電力測定 (2014)
  • Author(s): See Kei Lee, 大戸 達彦、山田 亮、夛田博一
  • Organizer: 第４回分子アーキテクトニクス研究会
  • Place of Presentation: 東京都
• [Presentation] C82およびGd@C82分子接合の熱起電力測定 (2014)
  • Author(s): Lee See Kei, Buekle Marius, 山田 亮, 浅井 美博, 夛田 博一
  • Organizer: 第４回分子アーキテクトニクス研究会
  • Place of Presentation: 東京都
• [Presentation] Ni 電極を用いた分子接合の熱電特性の第一原理計算 (2014)
  • Author(s): 大戸 達彦，Lee See Kei, 山田 亮, 夛田 博一
  • Organizer: 第４回分子アーキテクトニクス研究会
  • Place of Presentation: 東京都
• [Presentation] 金/オリゴチオフェン/金接合の電流電圧特性 (2014)
  • Author(s): 下店 隆史，山田 亮, 田中彰治, 夛田博一
  • Organizer: 第４回分子アーキテクトニクス研究会
  • Place of Presentation: 東京都
• [Presentation] 強磁性電極を用いた単分子接合の電子物性と機能 (2014)
  • Author(s): 山田亮
  • Organizer: 電気化学会
  • Place of Presentation: 吹田市
  • Invited
• [Presentation] Thermoelectricity in Benzenedithiol Molecular Junctions with Ni Electrodes (2014)
  • Author(s): See Kei Lee, Tatsuhiko Ohto, Ryo Yamada and Hirokazu Tada
  • Organizer: Nano and Giga Challenges in Electronics, Photonics and Renewable Energy
  • Place of Presentation: Phoenix, USA
• [Presentation] 単分子接合の磁気抵抗効果 : 結合部依存性 (2013)
  • Author(s): 金松東成, 山田亮, 夛田博一
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学(厚木)
  • Year and Date: 2013-03-28
• [Presentation] Thermoelectricity in Ni Nanocontact (2013)
  • Author(s): See Kei Lee, 山田亮, 夛田博一
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学(厚木)
  • Year and Date: 2013-03-28
• [Presentation] 強磁性電極/分子接合のスピン依存電導特性 (2013)
  • Author(s): 山田亮・夛田博一
  • Organizer: 日本化学会第93春季年会
  • Place of Presentation: 立命館大学 びわこ・くさつキャンパス(招待講演)
  • Year and Date: 2013-03-22
• [Presentation] 単分子素子の電子物性と展望 (2013)
  • Author(s): 山田 亮
  • Organizer: 第３回 CSJ化学フェスタ2013
  • Place of Presentation: タワーホール船堀
• [Presentation] Thermoelectricity in Molecular Junctions with Ni Electrodes (2013)
  • Author(s): See Kei Lee，Ryo Yamada，Tatsuhiko Ohto，Hirokazu Tada
  • Organizer: 秋季 第73回応用物理学会学術講演会
  • Place of Presentation: 京田辺
• [Presentation] Thermoelectric Effect in Molecular Junctions with Ni Electrodes (2013)
  • Author(s): See Kei Lee, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada
  • Organizer: MRS Fall Meeting
  • Place of Presentation: Boston, USA
• [Presentation] Thermopower of Benzenedithiol Molecular Junctions with Nickel Electrodes (2013)
  • Author(s): See Kei Lee, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada
  • Organizer: 1st International Confarence on the Science & Engineering of Materials
  • Place of Presentation: Kuala Lumpur, Malaysia
• [Presentation] Thermoelectric Voltage Measurements of Molecular Junctions with Ni Electrodes (2013)
  • Author(s): See Kei Lee, Tatsuhiko Ohto, Ryo Yamada and Hirokazu Tada
  • Organizer: 2013 Korea-Japan Molecular Electronics Symposium
  • Place of Presentation: Seoul, Korea
• [Presentation] Thermoelectric voltage of atomic contacts of Ni electrodes (2012)
  • Author(s): See Kei Lee, Ryo Yamada, Hirokazu Tada
  • Organizer: 6th International meeting on molecular electronics
  • Place of Presentation: Grenoble, Franc,
  • Year and Date: 2012-12-04
• [Presentation] Thermoelectric Measurements of Nanojunctions (2012)
  • Author(s): See Kei Lee, Ryo Yamada, Hirokazu Tada
  • Organizer: 2012 MRS Fall Meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 2012-11-28
• [Presentation] Magnetoresistance of single molecular junction (2012)
  • Author(s): Ryo Yamada, Noguchi Motoki and Hirokazu Tada
  • Organizer: The 6th International Workshop on Advanced Materials Science and Nanotechnology
  • Place of Presentation: Ha Long City, Vietnam(招待講演)
  • Year and Date: 2012-10-31
• [Presentation] 金属/単分子/金属接合の電気伝導測定 (2012)
  • Author(s): 山田亮
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学(招待講演)
  • Year and Date: 2012-09-19
• [Presentation] Magnetoresistance of single molecular junctions using ferromagnetic electrodes (2012)
  • Author(s): Ryo Yamada, Motoki Noguchi, Hirokazu Tada
  • Organizer: 4th International Meeting on Spins in Organic Semiconductors
  • Place of Presentation: London, UK
  • Year and Date: 2012-09-10
• [Presentation] Magnetoresistance of Ni/Benzenedithiol/Ni Single Molecular Junctions at Room Temperature (2012)
  • Author(s): Ryo Yamada, Motoki Noguchi, Hirokazu Tada
  • Organizer: 2012 MRS Spring Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2012-04-10