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Dive into the research topics where Takehiro Tanikawa is active.

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Featured researches published by Takehiro Tanikawa.


Journal of Physics: Condensed Matter | 2002

Direct measurement of surface-state conductance by microscopic four-point probe method

Shuji Hasegawa; Ichiro Shiraki; Takehiro Tanikawa; Christian Leth Petersen; Torben Mikael Hansen; Peter Bøggild; Francois Grey

For in situ measurements of local electrical conductivity of well defined crystal surfaces in ultrahigh vacuum, we have developed microscopic four-point probes with a probe spacing of several micrometres, installed in a scanning-electron-microscope/electron-diffraction chamber. The probe is precisely positioned on targeted areas of the sample surface by using piezoactuators. This apparatus enables conductivity measurement with extremely high surface sensitivity, resulting in direct access to surface-state conductivity of the surface superstructures, and clarifying the influence of atomic steps upon conductivity.


Surface Review and Letters | 2003

ELECTRICAL CONDUCTION THROUGH SURFACE SUPERSTRUCTURES MEASURED BY MICROSCOPIC FOUR-POINT PROBES

Shuji Hasegawa; Ichiro Shiraki; Fuhito Tanabe; Rei Hobara; Taizo Kanagawa; Takehiro Tanikawa; Iwao Matsuda; Christian Leth Petersen; Torben Mikael Hansen; Peter Bøggild; Francois Grey


E-journal of Surface Science and Nanotechnology | 2003

Variable-Temperature Micro-Four-Point Probe Method for Surface Electrical Conductivity Measurements in Ultrahigh Vacuum

Takehiro Tanikawa; Iwao Matsuda; Rei Hobara; Shuji Hasegawa


Physical Review B | 2001

Electronic structure of Ag-induced3×3and21×21superstructures on the Si(111) surface studied by angle-resolved photoemission spectroscopy and scanning tunneling microscopy

Xiao Tong; Satoru Ohuchi; Norio Sato; Takehiro Tanikawa; Tadaaki Nagao; Iwao Matsuda; Yoshinobu Aoyagi; Shuji Hasegawa


Physical Review B | 2001

Growth and electron quantization of metastable silver films on SiÑ001Ö

Iwao Matsuda; Han Woong Yeom; Takehiro Tanikawa; Kensuke Tono; Tadaaki Nagao; Shuji Hasegawa; Toshiaki Ohta


Physical Review B | 2002

Evidence of asymmetric dimers down to 40 K at the clean Si(100) surface

G. Le Lay; A. Cricenti; C. Ottaviani; P. Perfetti; Takehiro Tanikawa; Iwao Matsuda; Shuji Hasegawa


Physical Review Letters | 2007

Electron-phonon interaction and localization of surface-state carriers in a metallic monolayer.

Iwao Matsuda; Canhua Liu; Toru Hirahara; Masashi Ueno; Takehiro Tanikawa; Taizo Kanagawa; Rei Hobara; Shiro Yamazaki; Shuji Hasegawa; Katsuyoshi Kobayashi


Physical Review Letters | 2004

Surface-State Electrical Conductivity at a Metal-Insulator Transition On Silicon

Takehiro Tanikawa; Iwao Matsuda; Taizo Kanagawa; Shuji Hasegawa


E-journal of Surface Science and Nanotechnology | 2004

Quantum-Well States in Ultra-Thin Metal Films on Semiconductor Surfaces

Iwao Matsuda; Takehiro Tanikawa; Shuji Hasegawa; Han Woong Yeom; Kensuke Tono; Toshiaki Ohta


Surface Science | 2001

Growth mode and electrical conductance of Ag atomic layers on Si(001) surface

Takehiro Tanikawa; Iwao Matsuda; Tadaaki Nagao; Shuji Hasegawa

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Ichiro Shiraki

National Institute of Advanced Industrial Science and Technology

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Tadaaki Nagao

National Institute for Materials Science

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Han Woong Yeom

Pohang University of Science and Technology

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Christian Leth Petersen

Technical University of Denmark

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