{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/32107"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/32107","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Penetration Depth Studies of Unconventional Superconductors","abstract":"The magnetic penetration depth λ of various unconventional superconductors have been measured down to ~0.1 K using a tunnel-diode based, self-inductive technique at 21 and 28 MHz. The samples measured are the heavy-fermion superconductors CeCoIn5 and PrOs4Sb12, the rare-earth borocarbides RENi2B2C (RE = Y, Lu, Er, Ho), the spin-triplet superconductor Sr2RuO4, and elemental Pb. From these studies we see how superconductivity is affected by the presence of another order, such as paramagnetism/antiferromagnetism (in ErNi2B2C) or spin-density-wave (in Pb). We also see how the superfluid response is modified by nonlocal corrections in CeCoIn5 and Sr2RuO4. Hints of multi-band superconductivity are seen in YNi2B2C, LuNi2B2C and Sr2RuO4. Finally, we observe point-node behavior in PrOs4Sb12, whose superconductivity is suggested to be non-magnetic in origin - the first of its kind. Various theoretical models have been used to fit the data. Some of the work are still ongoing.","abstract_html":"The magnetic penetration depth λ of various unconventional superconductors have been measured down to ~0.1 K using a tunnel-diode based, self-inductive technique at 21 and 28 MHz. The samples measured are the heavy-fermion superconductors CeCoIn5 and PrOs4Sb12, the rare-earth borocarbides RENi2B2C (RE = Y, Lu, Er, Ho), the spin-triplet superconductor Sr2RuO4, and elemental Pb. From these studies we see how superconductivity is affected by the presence of another order, such as paramagnetism/antiferromagnetism (in ErNi2B2C) or spin-density-wave (in Pb). We also see how the superfluid response is modified by nonlocal corrections in CeCoIn5 and Sr2RuO4. Hints of multi-band superconductivity are seen in YNi2B2C, LuNi2B2C and Sr2RuO4. Finally, we observe point-node behavior in PrOs4Sb12, whose superconductivity is suggested to be non-magnetic in origin - the first of its kind. Various theoretical models have been used to fit the data. Some of the work are still ongoing.","abstract_has_math":false,"creators":["Chia, Ee-Min Elbert"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Salamon, Myron B."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-07-02T20:54:35Z","date_published":"2012-07-02T20:54:35Z","updated_at":"2026-07-22T22:25:30Z","subjects":["Superconductors","Superconductivity","Quasiparticle Density of States (QDOS)","penetration depth","rare earth metals"],"languages":["en"],"rights":["© 2004 Ee-Min Elbert Chia"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["4981701"],"render_values":[{"text":"4981701","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/32107","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Salamon, Myron B."]},{"key":"dc:creator","label":"Author","values":["Chia, Ee-Min Elbert"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-07-02T20:54:35Z","10000-01-01","2004-05"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","text","audio"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Superconductors","Superconductivity","Quasiparticle Density of States (QDOS)","penetration depth","rare earth metals"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["© 2004 Ee-Min Elbert Chia"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["4981701","http://hdl.handle.net/2142/32107"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The magnetic penetration depth λ of various unconventional superconductors have been measured down to ~0.1 K using a tunnel-diode based, self-inductive technique at 21 and 28 MHz. The samples measured are the heavy-fermion superconductors CeCoIn5 and PrOs4Sb12, the rare-earth borocarbides RENi2B2C (RE = Y, Lu, Er, Ho), the spin-triplet superconductor Sr2RuO4, and elemental Pb. From these studies we see how superconductivity is affected by the presence of another order, such as paramagnetism/antiferromagnetism (in ErNi2B2C) or spin-density-wave (in Pb). We also see how the superfluid response is modified by nonlocal corrections in CeCoIn5 and Sr2RuO4. Hints of multi-band superconductivity are seen in YNi2B2C, LuNi2B2C and Sr2RuO4. Finally, we observe point-node behavior in PrOs4Sb12, whose superconductivity is suggested to be non-magnetic in origin - the first of its kind. Various theoretical models have been used to fit the data. Some of the work are still ongoing.","Submitted by Megan O'Donnell (mnodonn2@illinois.edu) on 2012-07-02T20:54:35Z No. of bitstreams: 1 2004_Chia_EeMin.pdf: 6520248 bytes, checksum: e59dfd0b75d1a68604502408b7b64485 (MD5)","Made available in DSpace on 2012-07-02T20:54:35Z (GMT). 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The samples measured are the heavy-fermion superconductors CeCoIn5 and PrOs4Sb12, the rare-earth borocarbides RENi2B2C (RE = Y, Lu, Er, Ho), the spin-triplet superconductor Sr2RuO4, and elemental Pb. From these studies we see how superconductivity is affected by the presence of another order, such as paramagnetism/antiferromagnetism (in ErNi2B2C) or spin-density-wave (in Pb). We also see how the superfluid response is modified by nonlocal corrections in CeCoIn5 and Sr2RuO4. Hints of multi-band superconductivity are seen in YNi2B2C, LuNi2B2C and Sr2RuO4. Finally, we observe point-node behavior in PrOs4Sb12, whose superconductivity is suggested to be non-magnetic in origin - the first of its kind. Various theoretical models have been used to fit the data. Some of the work are still ongoing.","Submitted by Megan O'Donnell (mnodonn2@illinois.edu) on 2012-07-02T20:54:35Z No. of bitstreams: 1 2004_Chia_EeMin.pdf: 6520248 bytes, checksum: e59dfd0b75d1a68604502408b7b64485 (MD5)","Made available in DSpace on 2012-07-02T20:54:35Z (GMT). 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