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Book Design and Construction of a Low Temperature Scanning Tunneling Microscope for Studying High Temperature Superconductivity

Download or read book Design and Construction of a Low Temperature Scanning Tunneling Microscope for Studying High Temperature Superconductivity written by Dilushan R. Jayasundara and published by . This book was released on 2008 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Design and Construction of a Low Temperature Scanning Tunneling Microscope

Download or read book Design and Construction of a Low Temperature Scanning Tunneling Microscope written by Chi Chen and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Design Construction and Use of a Low temperature Ultra High Vacuum Scanning Tunneling Microscope for Reaction Studies

Download or read book The Design Construction and Use of a Low temperature Ultra High Vacuum Scanning Tunneling Microscope for Reaction Studies written by Ashley R. Gans-Forrest and published by . This book was released on 2017 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Tunneling Microscopy of Superconductors and Tunneling Barriers

Download or read book Tunneling Microscopy of Superconductors and Tunneling Barriers written by Alex De Lozanne and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin films of high temperature superconductors were made by sputtering and by co-evaporation. The former method produced thin films of YBaCuO which were completely superconducting at 82 K with 6 K transition widths. A new method was developed at the University of Texas which produced films of YBaCuO on strontium titanate that were superconducting at 84 K. This method minimizes the process temperature and produces films which are superconducting without the need for annealing. The films were also grown on silicon and sapphire substrates with zero resistance of 68 K or better. A low temperature scanning tunneling microscope was used to study the superconducting properties of these and other samples. High quality spectroscopic data was obtained which yields a value of approximately 11 for the ratio of the superconducting gap to the transition temperature. Keywords: High temperature superconductivity; Thin films; Tunneling.

Book Design and Construction of Low Temperature Scanning Tunnelling Microscope for Spectroscopy

Download or read book Design and Construction of Low Temperature Scanning Tunnelling Microscope for Spectroscopy written by Joakim Lindahl and published by . This book was released on 1998 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Studies of Superconductors Using a Low temperature Scanning Tunneling Microscope

Download or read book Studies of Superconductors Using a Low temperature Scanning Tunneling Microscope written by Roberta Kathryn Zasadzinski and published by . This book was released on 1995 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Low Temperature Scanning Tunneling Microscope Study of Metallic Thin Films and Nanostructures on the Semiconductor Substrates

Download or read book Low Temperature Scanning Tunneling Microscope Study of Metallic Thin Films and Nanostructures on the Semiconductor Substrates written by Shengyong Qin and published by . This book was released on 2008 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many properties of the thin films are different from the bulk value and in many cases, depend dramatically on the film thickness. In the metallic ultra-thin films epitaxially grown on the semiconductor substrate, the conduction electrons are confined by the vacuum and metal-semiconductor interface. When the film thickness is comparable to the electron Fermi wavelength, this confinement will produce discrete energy levels known as quantum well states (QWS), which dramatically modify the electronic structures of the thin film and this is called quantum size effect (QSE). QSE will have a profound effect on a lot of physical properties of the thin films. Among various systems exhibiting QSE, Pb/Si (111) is the most widely studied one and exhibits the richest phenomena in QSE. In this study, a home made low temperature Scanning Tunneling Microscopy/Spectroscopy (LT-STM/S) was used to study the superconductivities of the Pb thin films. Quantum oscillations of the superconductivity have been observed for the films down to 4 monolayer and the oscillation amplitude increases as the film gets thinner. To resolve the discrepancies between the superconductivities measured with ex-situ transport and in-situ STS. We also studied the influence of Au overlay on the Pb thin films with LT-STM/S, and found out the deposition of Au on Pb dramatically roughened the Pb films. Finally, we successfully grew large scale near perfect 2ML Pb films. There are two types of films which exhibit different Moiré patterns. LT-STS studies revealed there is big difference in the superconductivity Tc of these two films, both of which decreased dramatically from that of the 4ML film.

Book Scanning Tunneling Microscope Studies of the High Temperature Superconductor BSCCO

Download or read book Scanning Tunneling Microscope Studies of the High Temperature Superconductor BSCCO written by Alan Fang and published by . This book was released on 2008 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An ultra high vacuum low temperature scanning tunneling microscope and its applications to high Tc subscript c superconductors and quasi one dimensional organic conductors

Download or read book An ultra high vacuum low temperature scanning tunneling microscope and its applications to high Tc subscript c superconductors and quasi one dimensional organic conductors written by Shuheng Pan and published by . This book was released on 1991 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Restoration of a Low Temperature Scanning Tunneling Microscope

Download or read book Restoration of a Low Temperature Scanning Tunneling Microscope written by Baird Bankovic and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning tunneling microscopy is a technique that enables the study of the surfaces of materials with sub-nanometer resolution. A scanning tunneling microscope (STM) gives local electronic information about the surface and is an invaluable analysis technique in modern condensed matter physics. The goal of my project was to restore an existing low temperature STM which had fallen into disrepair. This thesis outlines the restoration process, along with a description of the supporting techniques that were necessary. In parallel with the restoration process, I also developed an automated tungsten tip fabricator for making atomically sharp tips for the STM. This is an original design that I have shared on an open source website. Additionally, I explored the use of a low temperature transimpedance preamplifier that would improve the performance of our STM and tested a number of operational amplifiers that could be used to this end.