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Bohn, Paul W. Tanzer, Troy Anthony 2015-09-25T22:14:37Z 2015-09-25T22:14:37Z 10000-01-01 1999 1999 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. Made available in DSpace on 2015-09-25T22:14:37Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9953156.pdf: 11937574 bytes, checksum: 9dd0a1b09e478672591f7627987ec42d (MD5) Previous issue date: 1999 Embargo set by: Seth Robbins for item 85742 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 378 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999. http://hdl.handle.net/2142/84461 (MiAaPQ)AAI9953156 eng Physics, Condensed Matter Studies of Interfacial Phenomena: Alkanethiol Adsorption and Patterning on Gold and the Superconducting Proximity Effect in Superconductor /Semiconductor Systems text Ph.D. Chemistry Chemistry University of Illinois at Urbana-Champaign Dissertation