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oai:www.ideals.illinois.edu:2142/15582 2023-07-10 col_2142_5131 col_2142_8859 com_2142_5130 com_2142_8858 com_2142_234

Made available in DSpace on 2010-05-14T20:51:19Z (GMT). No. of bitstreams: 2 Strand_Joel.pdf: 3215583 bytes, checksum: 56bc27939f1df7406b5bd380bfc02090 (MD5) license.txt: 4060 bytes, checksum: 7daff777161209135fcbaaaff684d71b (MD5) Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Ingram (wingram2@illinois.edu) on 2010-05-14T20:52:48Z Item is restricted until 2012-05-14T20:52:43Z Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2012-05-15T10:00:48Z Item was in collections: University of Illinois Dissertations and Theses (ID: 204) Dissertations and Theses - Physics (ID: 445) No. of bitstreams: 3 Strand_Joel.pdf.txt: 90110 bytes, checksum: 59089d1e2f2cc254d5a43bf46a8663cc (MD5) Strand_Joel.pdf: 3215583 bytes, checksum: 56bc27939f1df7406b5bd380bfc02090 (MD5) license.txt: 4060 bytes, checksum: 7daff777161209135fcbaaaff684d71b (MD5) Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2012-05-15T10:00:48Z http://hdl.handle.net/2142/15582 Van Harlingen, Dale J. Cooper, S. Lance Van Harlingen, Dale J. Stone, Michael Pitts, Kevin T. Strand, Joel D. 2010-05-14T20:51:19Z 2010-05-14T20:51:19Z 2012-05-15T10:00:48Z 2010-05-14T20:51:19Z We report evidence for a complex low-temperature superconducting phase in UPt3 that breaks time-reversal symmetry and exhibits a phase shift of Pi in the superconducting order parameter between the a- and b-axes. We also report evidence for nodes in the amplitude of the superconducting energy gap in the high-temperature phase of UPt3. These nodes occur 45 degrees between the a- and b-axes and fill in as an out-of-phase energy gap component develops. This evidence supports the E2u representation of the superconducting order parameter. These measurements were taken by fabricating Pb-Cu-UPt3 Josephson junctions on polished and as-grown surfaces of UPt3 single crystals. By measuring the critical current through the junctions and varying the applied magnetic field, temperature, and angle of the junctions, we obtained information on the phase and magnitude of the superconducting order parameter. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-04-09T18:00:51Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Strand_Joel.pdf: 3215583 bytes, checksum: 56bc27939f1df7406b5bd380bfc02090 (MD5) en Copyright 2010 Joel D. Strand UPt3 Josephson junctions unconventional superconductivity Josephson interferometry superconducting order parameter Determining the superconducting order parameter of UPt3 with Josephson junction interferometry 2010-5 Physics 1244 Physics 0240 University of Illinois at Urbana-Champaign Dissertation Ph.D. PHD:Physics -UIUC 10KS0240PHD