Toshihiko Yokoyama (Professor)

Field of Expertise:

Physical Chemistry, Surface Physics, Surface Spectroscopy

Research Interests:

1. Preparation of chemically modified magnetic thin films and their characterization
2. Magnetism of molecular magnet adsorbed surfaces
3. Exploitation of ultrafast magnetic nanoscope: ultraviolet magnetic circular dichroism photoelectron emission microscopy
4. Exploitation of chiral nanoscope: ultraviolet natural circular dichroism photoelectron emission microscopy

Recent Papers:

1. “Anharmonicity and quantum effects in thermal expansion of an Invar alloy” T. Yokoyama and K. Eguchi, Phys. Rev. Lett. 107 (2011) 065901 (4 pages).
2. “Spin reorientation transitions of Ni/Pd(111) films induced by Fe deposition” I. Yamamoto, T. Nakagawa, Y. Takagi and T. Yokoyama, Phys. Rev. B81 (2010) 214442 (7 pages).
3. “Energy- and angle-dependent threshold photoemission magnetic circular dichroism from an ultrathin Co/Pt(111) film” K. Hild, G. Schönhense, H. J. Elmers, T. Nakagawa, T. Yokoyama, K. Tarafder and P. M. Oppeneer, Phys. Rev. B82 (2010) 195430 (11 pages).
4. “Structure and magnetic properties of iron nitride thin films on Cu(001)” Y. Takagi, K. Isami, I. Yamamoto, T. Nakagawa and T. Yokoyama, Phys. Rev. B81 (2010) 035422 (8 pages).
5. “Two-photon photoemission magnetic circular dichroism and its energy dependence” T. Nakagawa, I. Yamamoto, Y. Takagi, K. Watanabe, Y. Matsumoto and T. Yokoyama, Phys. Rev. B 79 (2009) 172404 (4 pages).
6. “Strain relief guided novel growth of atomic nanowires in Cu3N-Cu(110) molecular network” X.-D. Ma, D. I. Bazhanov, O. Fruchart, F. Yildiz, T. Yokoyama, M. Przybylski, V. S. Stepanyuk, W. Hergert and J. Kirschner, Phys. Rev. Lett. 102 (2009) 205503.
7. “Magnetic properties of self-assembled Co nanorods grown on Cu(110)-(2×3)N” X. D. Ma, T. Nakagawa, Y. Takagi, M. Przybylski, F. M. Leibsle, and T. Yokoyama, Phys. Rev. B 78 (2008) 104420 (9 pages).
8. “Magnetic Circular Dichroism for Surface and Thin Film Magnetism: Measurement Techniques and Surface Chemical Applications” T. Yokoyama, T. Nakagawa and Y. Takagi, Int. Rev. Phys. Chem. 27 (2008) 449-505.
9. “Magnetic properties of self-assembled Co nanorods grown on Cu(110)-(2×3)N” X. D. Ma, T. Nakagawa, Y. Takagi, M. Przybylski, F. M. Leibsle, and T. Yokoyama, Phys. Rev. B 78 (2008) 104420 (9 pages).
10. “Measurements of threshold photoemission magnetic dichroism using ultraviolet lasers and a photoelastic modulator” T. Nakagawa, T. Yokoyama, M. Hosaka and M. Katoh, Rev. Sci. Instrum. 78 (2007) 023907 (5 pages).
11. “Magnetic circular dichroism near the Fermi level” T. Nakagawa and T. Yokoyama, Phys. Rev. Lett. 96 (2006) 237402 (4 pages).

Contact Information:

Phone: +81-564-55-7345
FAX: +81-564-55-7337
E-mail: yokoyama + @ims.ac.jp

Link:

Surface Spectroscopic Physics Laboratory (internal link in Japanese)
Laboratory HP (Institute for Molecular Science, National Institutes of Natural Sciences)

This page was last modified on 01 October 2011.