Abstract
We present a review of our recent results about transport properties of nanowires measured by a four-tip scanning tunneling microscope (STM) installed with metal-coated carbon nanotube (CNT) tips. We first present our custom-made apparatus (with UNISOKU Co.) as well as CNT tips, and then some case studies with two different samples, Co-silicide nanowires self-assembled on Si(110) surface and Cu nanowires made by damascene processes used in LSI industry. It is shown that the four-tip STM with CNT tips is versatile and powerful for measuring the conductivity of individual nanostructures.
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Acknowledgments
The present work was done in collaboration with UNISOKU Co., Ltd. in construction of the four-tip STM and Prof. M. Katayama in fabricating CNT tips. It was fully supported by the SENTAN Program of the Japan Science and Technology Agency (JST), and also by Grants-in-Aid for Scientific Research and A3 Foresight Program from the Japanese Society for the Promotion of Science (JSPS).
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Hasegawa, S., Hirahara, T., Kitaoka, Y., Yoshimoto, S., Tono, T., Ohba, T. (2012). Nanometer-Scale Four-Point Probe Resistance Measurements of Individual Nanowires by Four-Tip STM. In: Joachim, C. (eds) Atomic Scale Interconnection Machines. Advances in Atom and Single Molecule Machines. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28172-3_12
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DOI: https://doi.org/10.1007/978-3-642-28172-3_12
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