2016/06/01 by Hideyuki Takahashi, Yoshinori Imai, yoshinori imai +1 · 3 citations
Engineering · Physics and Astronomy · #Coaxial #Coaxial cable #Composite material #Computer science #Current (fluid) #Electrochemical scanning tunneling microscope #Materials science #Microscope #Microwave #Nanotechnology #Near-Field Optical Microscopy #Optics #Optoelectronics #Physics #Physics of Superconductivity and Magnetism #Quantum tunnelling #Resonator #Scanning tunneling microscope #Scanning tunneling spectroscopy #Surface and Thin Film Phenomena #Telecommunications #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.4953337
published in Review of Scientific Instruments 87(6), 063706 (American Institute of Physics)
openalex publication_date 2016/06/01 · arxiv created 2016/06/09 · arxiv updated 2016/06/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a design for a tunneling-current-assisted scanning near-field microwave microscope. For stable operation at cryogenic temperatures, making a small and rigid microwave probe is important. Our coaxial resonator probe has a length of approximately 30 mm and can fit inside the 2-in. bore of a superconducting magnet. The probe design includes an insulating joint, which separates DC and microwave signals without degrading the quality factor. By applying the SMM to the imaging of an electrically inhomogeneous superconductor, we obtain the spatial distribution of the microwave response with a spatial resolution of approximately 200 nm. Furthermore, we present an analysis of our SMM probe based on a simple lumped-element circuit model along with the near-field microwave measurements of silicon wafers having different conductivities.