Electron Tunneling Study of Superconductors Doped With Magnetic Atoms and Nonmagnetic Resonant State Atoms: Indium-Chromium, Zinc-Manganese, and Aluminum-Manganese

We have used electron tunneling measurements to determine the density of states of quench-condensed thin films of In-Cr, Zn-Mn, and Al-Mn, and of annealed thin films of Zn-Mn. The results on In-Cr and Zn-Mn were compared with Shiba's theory for magnetic atoms in superconductors. We observed the localized band of states predicted to form in the energy gap of such alloys, though the observed band was broader than that predicted. The annealed samples of Zn-Mn showed a narrower band than did the quench-condensed samples. Reasonable agreement with Shiba's theory was found if s, p, and d wave scattering were included.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Terris, Bruce David

• Physics, Condensed Matter

Language dc:language

eng

Identifier

(UMI)AAI8410057

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/77367