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Title:Studies of Interfacial Phenomena: Alkanethiol Adsorption and Patterning on Gold and the Superconducting Proximity Effect in Superconductor /Semiconductor Systems
Author(s):Tanzer, Troy Anthony
Doctoral Committee Chair(s):Bohn, Paul W.
Department / Program:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, Condensed Matter
Abstract:The second phenomenon studied is the superconducting proximity effect at Nb/InAs and NbN/InAs interfaces. Previous investigations of Nb/InGaAs show an excess conductance at low bias voltages when the system is superconducting. However, current models do not sufficiently explain this excess conductance. Raman spectroscopy is used in this research to overcome difficulties in performing electrical measurements on the high transmittance Nb/InAs interface. Materials processing issues in producing high quality, reproducible Nb/InAs interfaces are discussed, including the effects of passivation, dry etching and metal film deposition. Although several Nb/InAs and NbN/InAs samples exhibited evidence of a superconducting proximity effect, additional processing issues must be overcome before a conclusive determination of the excess conduction mechanism can be ascertained.
Issue Date:1999
Description:378 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999.
Other Identifier(s):(MiAaPQ)AAI9953156
Date Available in IDEALS:2015-09-25
Date Deposited:1999

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