Theory of switching mechanism and heat generation, dissioarion of single molecules

• Project/Area Number: 25390007
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanostructural physics
• Research Institution: University of Toyama (2014-2016); The University of Tokyo (2013)
• Principal Investigator: Ueba Hiromu 富山大学, 大学院理工学研究部(工学), 名誉教授 (70019214)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 走査トンネル顕微鏡 / 振動励起 / 表面化学反応 / 単一分子 / スイッチング素子 / 表面ダイナミックス / ナノサイエンス / アクションスペクトロスコピー / トンネル効果 / 表面反応 / 反応速度 / スイッチング / 国際研究者交流

Outline of Final Research Achievements

Tunneling electrons from a tip of a scanning tunneling microscope induce various dynamical change (includig its orientation change) by a vibrational excitations.Single molecule switching manifests itself in the high and low corrent state controlled by a repeted change of a bias polarity..We developed a first comprehensive theory of action spectrum (reaction rate as a function of an applied bias boltage between a STM tip and single molecule). This allows us to reproduce any reaction spectra. We applied this formula to various motions and rections of single molecules.

Research Products

• [Int'l Joint Research] Linnaeus University(Sweden)
• [Int'l Joint Research] Donostia International Physics Center(Spain)
• [Int'l Joint Research] Donotia International Physics Center(Spain)
• [Int'l Joint Research] Linnaeus University(Sweden)
• [Journal Article] Analysis of action spectra of vibrationally mediated reactions of single molecules on metal surfaces (2017)
  • Author(s): H. Ueba
  • Journal Title: Surface Science Volume: 印刷中 Pages: 95-100
  • DOI: 10.1016/j.susc.2017.04.005
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Direct Pathway to Molecular Photodissociation on Metal Surfaces Using Visible Light (2017)
  • Author(s): Emiko Kazuma, Jaehoon Jung , Hiromu Ueba§, Michael Trenary and Yousoo Kim*
  • Journal Title: Journal of American Chemical Society Volume: 139 Issue: 8 Pages: 3115312-3115312
  • DOI: 10.1021/jacs.6b12680
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The role of thermal excitation in the tunneling electron induced reaction, Dissociation of dimethyl disuffide on Cu(111) (2016)
  • Author(s): K. Motobayashi, Y. Kim, H. Ueba and M. Kawai
  • Journal Title: Surface Science Volume: 643 Pages: 1822-1822
  • DOI: 10.1016/j.susc.2015.08.008
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Action Spectroscopy for Single-Molecule Reactions-Experiments and Theory- (2015)
  • Author(s): Y. Kim, K. Motobayashi, T. Frederiksen, H. Ueba and M. Kawai
  • Journal Title: Progress in Surface Science Volume: 90 Issue: 2 Pages: 85-143
  • DOI: 10.1016/j.progsurf.2014.12.001
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Controlling single-molecule junction conductance by molecular interactions (2015)
  • Author(s): Y. Kitaguchi, S. Habuka, H. Okuyama, S. Hatta, T. Aruga, T. Frederiksen, M. Paulsson, H. Ueba
  • Journal Title: Scientific Reports Volume: なし Issue: 1 Pages: 11796-11796
  • DOI: 10.1038/srep11796
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Controlled switching of single-molecule junctions by mechanical motion of phenyl ring (2015)
  • Author(s): Y. Kitaguchi, S. Habuka, H. Okuyama, S. Hatta, Tetsuya Aruga,T. Frederiksen, M. Paulsson, H. Ueba
  • Journal Title: Beilstein Journal of Nanotechnology Volume: 6 Pages: 2088-2095
  • DOI: 10.3762/bjnano.6.213
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Isotope effect in acetylene C2H2 and C2D2 rotations on Cu(001) (2014)
  • Author(s): Y. Shchadilova, S. G. Tikhodeev, M. Paulsson, and Hiromu Ueba
  • Journal Title: Physcal Review B Volume: 85 Pages: 165418-11
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Theory of vibrationally assisted tunneling for hydroxyl monomer flipping on Cu(110) (2014)
  • Author(s): A. Gustafsson, H. Ueba, and M. Paulsson
  • Journal Title: Physcal Review B Volume: 90 Pages: 165413-4
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Dissociation pathways of a single dimethyl disulfide on Cu(111): Reaction induced by simultaneous excitation of two vibrational modes (2014)
  • Author(s): K. Motobayashi, Y. Kim, R. Arafune, M. Ohara, H. Ueba, M. Kawai
  • Journal Title: JOURNAL OF CHEMICAL PHYSICS Volume: 140 Issue: 19 Pages: 194705-7
  • DOI: 10.1063/1.4875537
  • Peer Reviewed
• [Journal Article] Theory of action spectroscopy for single-molecule reactions induced by vibrational (2014)
  • Author(s): T. Frederiksen, M. Paulsson, and H. Ueba
  • Journal Title: Physcal Review B Volume: 89 Issue: 3 Pages: 035427-10
  • DOI: 10.1103/physrevb.89.035427
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Rotation of a Single Acetylene Molecule on Cu(001) by Tunneling Electrons in STM (2013)
  • Author(s): Y.. Shchadilova, S. Thikodeev, M. Paulsson and H. Ueba
  • Journal Title: Physical Review Letters Volume: 111 Issue: 18
  • DOI: 10.1103/physrevlett.111.186102
  • Peer Reviewed
• [Presentation] Environmental control of single-molecule conductance (2015)
  • Author(s): H. Okuyama
  • Organizer: 15th International Conference on Vibrations at Surfaces
  • Place of Presentation: Donostia-San Sebastian, Spain
  • Year and Date: 2015-06-22
  • Int'l Joint Research
• [Presentation] Vibrationally mediated single molecule reaction in real space and in real time (2013)
  • Author(s): H. Ueba
  • Organizer: Workshop on Controlled Atomic Dynamics on Solid Surfaces
  • Place of Presentation: San Sebastian, Spain
  • Invited