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

Abstract

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.

3 pages, 3 figures.

References in corpus (5)

• Scanning tunneling microscopy and spectroscopy of the electronic local density of states of graphite surfaces near monoatomic step edges
• Effect of tip-geometry on contrast and spatial-resolution of the Near-Field Microwave Microscope
• Nanometer-Scale Materials Contrast Imaging with a Near-Field Microwave Microscope
• Anti-phase Modulation of Electron- and Hole-like States in Vortex Core of Bi2Sr2CaCu2Ox Probed by Scanning Tunneling Spectroscopy
• Appearance of New Energy Gap and Periodic Local Density-of-States Modulation in $B{i}_{2}S{r}_{1.6}L{a}_{0.4}Cu{O}_{6+\delta }$

Cited by in corpus (3)

• Anomalous Surface Impedance in a Normal-metal/Superconductor Junction with a Spin-active Interface
• Low-temperature-compatible tunneling-current-assisted scanning microwave microscope utilizing a rigid coaxial resonator
• Near-field microwave imaging of inhomogeneous K${}_x$Fe${}_y$Se${}_2$: separation of topographic and electric features