Spin-dynamics in crystalline molecular films

• Project/Area Number: 15H05420
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Applied materials
• Research Institution: Osaka University
• Principal Investigator: Miwa Shinji 大阪大学, 基礎工学研究科, 准教授 (20609698)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000); Fiscal Year 2015: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
• Keywords: フタロシアニン / 磁気トンネル接合 / スピントロニクス / スピンエレクトロニクス

Outline of Final Research Achievements

We focus on radical spins in crystalline molecular films instead of micro-fabricated nanomagnets. We obtained the following two results. Firstly, we have succeeded in fabricating devices consisting of phthalocyanine molecules and single-crystal Fe/MgO junctions. Secondly, we have succeeded in detecting radical spins in Pt/Fe-phthalocyanine devices and also obtaining results which indicates that it is feasible to conduct electrical detection of the radical spins.

Research Products

• [Journal Article] Magnetic tunnel junction with Fe(001)/Co phthalocyanine/MgO(001) single-crystal multilayer (2018)
  • Author(s): T. Kawabe, K. Shimose, M. Goto, Y Suzuki, and S. Miwa*
  • Journal Title: Applied Physics Express 11, 013201 (2018) Volume: 11 Issue: 1 Pages: 1-3
  • DOI: 10.7567/apex.11.013201
  • NAID: 210000136082
  • Peer Reviewed
• [Journal Article] Effect of external magnetic field on locking range of spintronic feedback nano oscillator (2018)
  • Author(s): H. Singh, K. Konishi, A. Bose, S. Bhuktare, S. Miwa, A. Fukushima, K. Yakushiji, S. Yuasa, H. Kubota, Y. Suzuki, and A. A. Tulapurkar*
  • Journal Title: AIP Advances 8, 056010 (2018) Volume: 8 Issue: 22 Pages: 1-5
  • DOI: 10.1103/physrevb.96.220412
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Strong bias effect on voltage-driven torque at epitaxial Fe-MgO interface (2017)
  • Author(s): S. Miwa*, J. Fujimoto, P. Risius, K. Nawaoka, M. Goto, and Y. Suzuki
  • Journal Title: Physical Review X 7, 031018 (2017). 2017.7 Volume: 7 Issue: 3 Pages: 1-9
  • DOI: 10.1103/physrevx.7.031018
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Voltage controlled interfacial magnetism through platinum orbits (2017)
  • Author(s): S. Miwa*, M. Suzuki, M. Tsujikawa, K. Matsuda, T. Nozaki, K. Tanaka, T. Tsukahara, K. Nawaoka, M. Goto, Y. Kotani, T. Ohkubo, F. Bonell, E. Tamura, K. Hono, T. Nakamura, M. Shirai, S. Yuasa, and Y. Suzuki
  • Journal Title: Nature Communications 8, 15848 (2017). 2017.6 Volume: 8 Issue: 1 Pages: 1-9
  • DOI: 10.1038/ncomms15848
  • Peer Reviewed / Open Access
• [Journal Article] Electron paramagnetic resonance study of MgO thin-film grown on silicon (2017)
  • Author(s): K. Hayashi, Y. Matsumura, S. Kobayashi, H Morishita, H. Koike, S. Miwa, N. Mizuochi, and Y. Suzuki
  • Journal Title: Journal of Applied Physics 121 (21), 213901 (2017). 2017.6 Volume: 121 Issue: 9 Pages: 1-6
  • DOI: 10.1063/1.4977755
  • Peer Reviewed
• [Journal Article] Characterization of the magnetic moments of ultrathin Fe film in an external electric field via high-precision x-ray magnetic circular dichroism spectroscopy (2017)
  • Author(s): T. Tsukahara, T. Kawabe, K. Shimose, T Furuta, R. Miyakaze, K. Nawaoka, M. Goto, T. Nozaki, S. Yuasa, Y. Kotani, K. Toyoki, M. Suzuki, T. Nakamura, Y. Suzuki, and S. Miwa*
  • Journal Title: Japanese Journal of Applied Physics (Rapid Communications) 56, 060304 (2017). 2017.5 Volume: 56 Issue: 6 Pages: 1-4
  • DOI: 10.7567/jjap.56.060304
  • NAID: 210000147815
  • Peer Reviewed
• [Presentation] Pt/Feフタロシアニン多層膜の磁気抵抗効果 (2018)
  • Author(s): 下瀬弘輝, 河辺健志, 後藤穣, 鈴木義茂, 三輪真嗣
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Co/MgO多層膜における磁気モーメント及び磁気異方性の電圧変調 (2018)
  • Author(s): 河辺健志, 吉川晃平, 辻川雅人, 塚原拓也, 縄岡孝平, 小谷佳範, 豊木研太郎, 後藤穣, 鈴木基寛, 中村哲也, 白井正文, 鈴木義茂, 三輪 真嗣
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] スピン軌道相互作用で操るスピンデバイス・スピントロニクス (2018)
  • Author(s): 三輪真嗣
  • Organizer: 日本物理学会第73回年次大会
  • Invited
• [Presentation] Bruno mechanism on voltage-controlled magnetic anisotropy in ultrathin cobalt films (2018)
  • Author(s): Takeshi Kawabe、Kohei Yoshikawa、Masato Tsujikawa,、Takuya Tsukahara、Kohei Nawaoka、Yoshinori Kotani、Kentaro Toyoki、 Minori Goto、Motohiro Suzuki、Tetsuya Nakamura、Masafumi Shirai、Yoshishige Suzuki、Shinji Miwa
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] Magnetoresistance of Pt(001)/Fe-phthalocyaine/MgO(001) pseudo-epitaxial multilayer (2018)
  • Author(s): Koki Shimose、Ryoto Enoki、Hiromu Gamou、Takeshi Kawabe、Takuya Tsukahara、Yoshinori Kotani、Kentaro Toyoki、Tetsuya Nakamura、Minori Goto、Yoshishige Suzuki、Junsaku Nitta、Makoto Kohda、Shinji Miwa
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] Electric-field-induced effect in Fe/MgO-based multilayer devices (2018)
  • Author(s): S. Miwa
  • Organizer: Symposium on Frontier Researches of Functional Oxide Devices and Materials
  • Invited
• [Presentation] Elucidation of a mechanism of voltage-controlled magnetic anisotropy in Co/MgO multilayer (2018)
  • Author(s): T. Kawabe, K. Yoshikawa, M. Tsujikawa, T. Tsukahara, K. Nawaoka, Y. Kotani, K. Toyoki, M. Goto, M. Suzuki, T. Nakamura, M. Shirai, Y. Suzuki and S. Miwa
  • Organizer: 平成29年度「ナノスピン変換科学」年次報告会
• [Presentation] Microscopic origin of voltage-controlled magnetic anisotropy in FePt/MgO epitaxial multilayer (2018)
  • Author(s): S. Miwa, M. Suzuki, M. Tsujikawa, K. Matsuda, T. Nozaki, K. Tanaka, M. Goto, Y. Kotani, T. Ohkubo, F. Bonell, E. Tamura, K. Hono, T. Nakamura, M. Shirai, Y. Suzuki
  • Organizer: APS March 2018
  • Int'l Joint Research
• [Presentation] Electric-field-induced changes in magnetic moments and magnetic anisotropy in Co/MgO multilayer (2018)
  • Author(s): Takeshi Kawabe, Kohei Yoshikawa, Masahito Tsujikawa, Takuya Tsukahara, Kohei Nawaoka, Yoshinori Kotani, Kentaro Toyoki, Minori Goto, Motohiro Suzuki, Tetsuya Nakamura, Masafumi Shirai, Yoshishige Suzuki, Shinji Miwa
  • Organizer: APS March 2018
  • Int'l Joint Research
• [Presentation] Spin-dependent transport properties in Pt/Fe-phthalocyanine metal-organic bilayer (2018)
  • Author(s): K. Shimose, T. Kawabe, M. Goto, Y. Suzuki, and S. Miwa
  • Organizer: APS March 2018
  • Int'l Joint Research
• [Presentation] 電圧制御による超省電力スピントロニクスデバイスの材料開発と放射光による界面磁気機能の解明 (2018)
  • Author(s): 三輪真嗣
  • Organizer: 第３回 元素戦略プロジェクト＜研究拠点形成型＞／大型研究施設連携シンポジウム
  • Invited
• [Presentation] Au(001)表面上への銅フタロシアニン超薄膜の結晶成長評価 (2017)
  • Author(s): 河辺健志
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学（大阪府・豊中市）
  • Year and Date: 2017-03-17
• [Presentation] 希土類電極を用いた有機薄膜ダイオードの作製 (2017)
  • Author(s): 下瀬弘輝
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学（大阪府・豊中市）
  • Year and Date: 2017-03-17
• [Presentation] Magnetic moments of Co-phthalocyanine grown on Fe(001) (2017)
  • Author(s): 河辺健志
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2017-03-14
• [Presentation] Fabrication of high current density organic thin-film diode with rare-earth electrode (2017)
  • Author(s): 下瀬弘輝
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2017-03-14
• [Presentation] Voltage-controlled magnetic anisotropy through multipole induction in platinum (2017)
  • Author(s): S. Miwa
  • Organizer: 15th RIEC International Workshop on Spintronics
  • Int'l Joint Research / Invited
• [Presentation] 電界誘起多極子によるナノスピン変換 (2017)
  • Author(s): 三輪真嗣
  • Organizer: 第11回 物性科学領域横断研究会（領域合同研究会）
• [Presentation] Voltage Controlled Magnetic Anisotropy of Ultrathin Fe and Pt Characterized by X-Ray Magnetic Circular Dichroism Spectroscopy (2017)
  • Author(s): Takuya Tsukahara, Takeshi Kawabe, Koki Shimose, Taishi Furuta, Risa Miyakaze, Kohei Nawaoka, Minori Goto, Takayuki Nozaki, Shinji Yuasa, Yoshinori Kotani, Kentaro Toyoki, M. Suzuki, Tetsuya Nakamura, Yoshishige Suzuki, Shinji Miwa
  • Organizer: MRS Fall Meeting & Exhibit 2017
  • Int'l Joint Research
• [Presentation] Voltage Control of Interfacial Magnetic Anisotropy, Dzyaloshinskii-Moriya Interaction and Exchange Coupling in Fe/MgO-Based Artificial Multilayers (2017)
  • Author(s): S. Miwa, K. Nawaoka, J. Cho, T. Nozaki, M. Suzuki, M. Tsujikawa, T. Tsukahara, M. Goto, F. Bonell, E. Tamura, H. Kubota, S. Tamaru, K. Yakushiji, A. Fukushima, Y. Kotani, T. Nakamura, M. Shirai, T. Ohkubo, K. Hono, C. You, S. Yuasa, Y. Suzuki
  • Organizer: MRS Fall Meeting & Exhibit 2017
  • Int'l Joint Research / Invited
• [Presentation] はじめてのスピントロニクス 原理から応用デバイスまで (2017)
  • Author(s): S. Miwa
  • Organizer: 第7回CSJ化学フェスタ2017（日本化学会秋季事業）
  • Invited
• [Presentation] Synchrotron X-ray spectroscopy for voltage-controllable spintronic devices (2017)
  • Author(s): S. Miwa
  • Organizer: ICMaSS 2017（International Conference on Materials and Systems for Sustainability）
  • Int'l Joint Research / Invited
• [Presentation] Voltage controlled magnetic anisotropy through magnetic dipole term induction (2017)
  • Author(s): S. Miwa
  • Organizer: The 3rd ImPACT International Symposium on Spintronic Memory, Circuit and Storage(ImPACT第3回国際シンポジウム)
  • Int'l Joint Research / Invited
• [Presentation] 放射光による新規スピントロニクス研究Novel Spintronics Phenomena Explored by Synchrotron Radiation (2017)
  • Author(s): 三輪真嗣
  • Organizer: 日本物理学会2017年秋季大会
  • Invited
• [Presentation] Tunnel junction device with Co-phthalocyanine (2017)
  • Author(s): T. Kawabe, K. Shimose, K. Nawaoka, M. Goto, Y. Suzuki and S. Miwa
  • Organizer: 平成29年度「ナノスピン変換科学」研究会
• [Presentation] Fe/コバルトフタロシアニン/MgO/Feトンネル接合の磁気抵抗効果 (2017)
  • Author(s): 河辺健志, 下瀬弘輝, 縄岡孝平, 後藤穣, 鈴木義茂, 三輪真嗣
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] Transport properties of current-perpendicular-to-plane epitaxial Fe/Co-phthalocyanine/MgO/Fe junction (2017)
  • Author(s): T. Kawabe, K. Shimose, K. Nawaoka, M. Goto, Y. Suzuki and S. Miwa
  • Organizer: 第78回応用物理学会秋季学術講演会
• [Presentation] Voltage controlled magnetic anisotropy of monatomic Pt layer at Fe|MgO interface characterized by X-ray absorption spectroscopy (2017)
  • Author(s): 塚原拓也, 鈴木基寛, 河辺健志, 下瀬弘輝, 古田大志, 宮風里紗, 縄岡孝平, 後藤穣, 野崎隆行, 湯浅新治, 小谷佳範, 豊木研太郎, 中村 哲也 , 鈴木義茂, 三輪真嗣
  • Organizer: 第78回応用物理学会秋季学術講演会
• [Presentation] X線磁気円二色性分光による電圧制御型スピントロニクスデバイスの研究 (2017)
  • Author(s): 三輪真嗣
  • Organizer: SPring-8シンポジウム2017
  • Invited
• [Presentation] Voltage control of magnetic properties in ferromagnetic metals (2016)
  • Author(s): 三輪真嗣
  • Organizer: Korea-Japan Spin-Orbit Workshop
  • Place of Presentation: 九州大学（福岡県・福岡市）
  • Year and Date: 2016-12-15
  • Int'l Joint Research / Invited
• [Presentation] Voltage control of platinum orbit: contribution to interfacial magnetic anisotropy change (2016)
  • Author(s): 三輪真嗣
  • Organizer: MMM2016
  • Place of Presentation: New Orleans (Louisiana, US)
  • Year and Date: 2016-11-02
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion at interface of metal and dielectric (2016)
  • Author(s): 三輪真嗣
  • Organizer: NSCS-QSD 2016
  • Place of Presentation: 東京大学（東京都・文京区）
  • Year and Date: 2016-10-13
  • Int'l Joint Research
• [Presentation] Voltage control of interfacial magnetic anisotropy at metal|dielectric interface (2016)
  • Author(s): 三輪真嗣
  • Organizer: EU-JAPAN Workshop on Computational Materials Design and Realization for Spintronics, Moltronics, Quantronics, Superconductivity and Topotronics
  • Place of Presentation: Peter Grunberg Institute, Julich Research Centre（Julich, Germany）
  • Year and Date: 2016-09-21
  • Int'l Joint Research
• [Presentation] Epitaxial copper-phthalocyanine thin film grown on Au (001) buffer (2016)
  • Author(s): 三輪真嗣
  • Organizer: ICMM2016
  • Place of Presentation: Sendai International Center（宮城県・仙台市）
  • Year and Date: 2016-09-07
  • Int'l Joint Research
• [Presentation] 金属/絶縁体界面における磁性の分光研究 (2016)
  • Author(s): 三輪真嗣
  • Organizer: 大阪大学基礎工学研究科附属スピントロニクス学術連携教育センター・キックオフ・シンポジウム
  • Place of Presentation: 大阪大学（大阪府・豊中市）
  • Year and Date: 2016-06-10
• [Presentation] Single crystalline copper-phthalocyanine thin film grown on Au (001) buffer (2015)
  • Author(s): S. Miwa, S. Kobayashi, N. Mizuochi, Y. Suzuki
  • Organizer: 第76回応用物理学会秋季学術講演会
  • Place of Presentation: 名古屋国際会議場（愛知県・名古屋市）
  • Year and Date: 2015-09-13