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Noriaki Takagi / Associate Professor / Division of Transdisciplinary Sciences
Department of Advanced Materials Science / / Surface Science
http://www.surfchem.k.u-tokyo.ac.jp/

Career Summary
1988: Graduated, Faculty of Science, Kyoto University
1993: Doctor of Science from Kyoto University
1993: Research Associate, Kyoto University
1999: Asociate Professor, The Graduate University for Advanced Studies (SOKENDAI)
2004-2005: Visiting Associate Professor, The Institute for Molecular Science
2004: Associate Professor, The University of Tokyo

Educational Activities
Graduate School: Introduction to Advanced Materials Science IV, Introduction to Surface Science

Research Activities
We are investigating the electronic and magnetic properties of single organometallic molecules
and low-dimensional systems such as nano-wires and nano-dots on metal surfaces
using low-temperature scanning tunneling microscopy/spectroscopy (STM/STS).

Surface electronic wavefunction confined by steps on Au(111) (image size 15nm x 15nm)
Surface electronic wavefunction confined by steps in Au(111) (image size 15 nm x 15 nm)


Literature
1) O. Nakagoe, N. Takagi, K. Watanabe, Y. Matsumoto: Explosive Evolution of Hydrogen Abstraction of Water on Oxidized Ag(110) Surfaces Studied by Scanning Tunneling Microscopy, Phys. Chem. Chem. Phys. 9, 5274-5278 (2007).
2) M. Nishijima, H. Okuyama, N. Takagi, T. Aruga, W. Brenig: Quantum Delocalization of Hydrogen on Metal Surfaces, Surf. Sci. Rep. 57, 113-156 (2005).
3) O. Nakagoe, N. Takagi, K. Watanabe, Y. Matsumoto: In-situ Observation of CO Oxidation on Ag(110)(2~1)-O by Scanning Tunneling Microscopy: Structural Fluctuation and Catalytic Activity, J. Phys. Chem. B 109, 14536-14543 (2005).
4) D. Ino, K. Watanabe, N. Takagi, Y. Matsumoto: The Electronic Structure and Femtosecond Electron Transfer Dynamics at Noble Metal/tris-(8-hydroxyquinoline) Aluminum Interfaces, Phys. Rev. B 71, 115427 (2005).
5) K. Watanabe, N. Takagi, Y. Matsumoto: Direct Time-domain Observation of Ultrafast Dephasing in Adsorbate-substrate Vibration Under the Influence of a Hot Electron Bath: Cs Adatoms on Pt(111), Phys. Rev. Lett. 92, 057401 (2004).
6) O. Nakagoe, K. Watanabe, N. Takagi and Y. Matsumoto: Role of Structural Fluctuation in a Surface Reaction studied by Scanning Tunneling Microscopy: The CO + O→CO2 Clean-off Reaction on Ag(110)(2x1)-O", Phys. Rev. Lett. 90, 226105 (2003).
Other Activities
Chemical Society of Japan
Physics Society of Japan
Surface Science Society of Japan
Vacuum Society of Japan

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Future Plan
STM/STS is very powerful tool to investigate electronic and magnetic properties of low-dimensional systems
from single molecules to nano-wires and nano-dots on metal surfaces.
We will focus on the investigation of the magnetic properties of these nano-structured materials
by measuring elementary excitations of single spins and spatial magnetic ordering.
Messages to Students
I hope that you will join us and unravel the exotic properties of low-dimensional materials on solid surfaces.
Let’s explore the "nano-world"!
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