Please use this identifier to cite or link to this item: https://doi.org/10.3390/s120506049
Title: Sensing with superconducting point contacts
Authors: Nurbawono, A.
Zhang, C. 
Keywords: Andreev reflections
Point contact spectroscopy
Superconductivity
Issue Date: May-2012
Citation: Nurbawono, A., Zhang, C. (2012-05). Sensing with superconducting point contacts. Sensors (Switzerland) 12 (5) : 6049-6074. ScholarBank@NUS Repository. https://doi.org/10.3390/s120506049
Abstract: Superconducting point contacts have been used for measuring magnetic polarizations, identifying magnetic impurities, electronic structures, and even the vibrational modes of small molecules. Due to intrinsically small energy scale in the subgap structures of the supercurrent determined by the size of the superconducting energy gap, superconductors provide ultrahigh sensitivities for high resolution spectroscopies. The so-called Andreev reflection process between normal metal and superconductor carries complex and rich information which can be utilized as powerful sensor when fully exploited. In this review, we would discuss recent experimental and theoretical developments in the supercurrent transport through superconducting point contacts and their relevance to sensing applications, and we would highlight their current issues and potentials. A true utilization of the method based on Andreev reflection analysis opens up possibilities for a new class of ultrasensitive sensors. © 2012 by the authors; licensee MDPI, Basel, Switzerland.
Source Title: Sensors (Switzerland)
URI: http://scholarbank.nus.edu.sg/handle/10635/99021
ISSN: 14248220
DOI: 10.3390/s120506049
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