NDLI: Optical and electrical properties of thin superconducting films

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Optical and electrical properties of thin superconducting films

Content Provider	NASA Technical Reports Server (NTRS)
Author	Jing, Feng Chen Covington, Billy C.
Copyright Year	1990
Description	Infrared spectroscopic techniques can provide a vital probe of the superconducting energy gap which is one of the most fundamental physical properties of superconductors. Currently, the central questions regarding the optical properties of superconductors are how the energy gap can be measured by infrared techniques and at which frequency the gap exists. An effective infrared spectroscopic method to investigate the superconducting energy gap, Eg, was developed by using the Bomem DA 3.01 Fourier Transformation Spectrophotometer. The reflectivity of a superconducting thin film of YBaCuO deposited on SrTiO3 was measured. A shoulder was observed in the superconducting state reflectance R(sub S) at 480/cm. This gives a value of Eg/kT(sub c) = 7.83, where k is the Boltzmann constant and T(sub c) is the superconducting transition temperature, from which, it is suggested that YBaCuO is a very strong coupling superconductor.
File Size	907386
Page Count	49
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910018642
Archival Resource Key	ark:/13960/t13n72c6v
Language	English
Publisher Date	1990-12-31
Access Restriction	Open
Subject Keyword	Optics Infrared Spectroscopy Transition Temperature Fourier Transformation Electrical Properties Superconductivity High Temperature Superconductors Frequencies Thin Films Superconducting Films Spectrophotometers Optical Properties Barium Oxides Infrared Radiation Copper Oxides Yttrium Oxides Reflectance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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