Quantitative Characterization of Platinum Diselenide Electrical Conductivity With an Inverted Scanning Microwave Microscope

Near-field scanning microwave microscopy is a technique with increasing popularity for the study of nanometer-scale electrical properties of samples. Here, we present an approach to quantify sample properties in images obtained with an inverted scanning microwave microscope (iSMM), recently introduc...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2021-07, Vol.69 (7), p.3348-3359
Main Authors: Fabi, Gianluca, Jin, Xin, Pavoni, Eleonora, Joseph, C. H., Di Donato, Andrea, Mencarelli, Davide, Wang, Xiaopeng, Al Hadi, Richard, Morini, Antonio, Hwang, James C. M., Farina, Marco
Format: Article
Language:English
Subjects:
Admittance
Algorithms
Calibration
Electrical properties
Electrical resistivity
Equivalent circuits
Frequency measurement
nanotechnology
Numerical models
Platinum
platinum diselenide
Probes
scanning microwave microscopy (SMM)
Signal to noise ratio
Slot lines
Transmission line measurements
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Summary:Near-field scanning microwave microscopy is a technique with increasing popularity for the study of nanometer-scale electrical properties of samples. Here, we present an approach to quantify sample properties in images obtained with an inverted scanning microwave microscope (iSMM), recently introduced by our group. In particular, this study reports the analysis of the local electrical conductivity of a platinum diselenide sample and proves its semimetal behavior. The approach is validated by a full-wave numerical model, reproducing the complete iSMM operation as well as all steps of the calibration algorithms. To extract local sample properties, this article provides two calibration procedures, respectively, for transmission and reflection mode measurements, based on a two-port equivalent circuit of the iSMM. This enables the high-frequency quantitative characterization of a wide variety of samples and surfaces.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2021.3072374