Local Measurement of Microwave Response with Local Tunneling Spectra Using Near Field Microwave Microscopy

Details Local Measurement of Microwave Response with Local Tunneling Spectra Using Near Field Microwave Microscopy Local Measurement of Microwave Response with Local Tunneling Spectra Using Near Field Microwave Microscopy

2010-03-30

arxiv.org/abs/1003.5714v1

Applied Physics Express 2 (2009) 025006

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 3 figures.

Scientific paper

We have designed and built a near-field scanning microwave microscope, which has been used to measure the local microwave response and the local density-of-states (LDOS) in the area including the boundary between the gold deposited and the non-deposited region on highly-orientated pyrolytic graphite at a frequency of about 7.3 GHz. We have succeeded in measuring the spatial variation of both the LDOS and the surface resistance. It can be observed that the surface resistance in gold deposited region with the metallic tunneling spectra is smaller than that in the non-deposited region with the U-shaped tunneling spectra.

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