{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/104746"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/104746","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Superconducting tunneling spectroscopy of low-dimensional materials","abstract":"Due to technological advances in bottom-up and top-down approaches in device fabrication, scientists have been able to construct devices that have dimensions on the orders of ones or tens of nanometers. Low-dimensional materials are of great interest due to the emergence of quantum effects and increased interactions between electrons, which can be exploited to create novel electronic devices. In this thesis, transport was studied in a variety of one- and two-dimensional materials. In graphene, non-equilibrium tunneling spectroscopy was used to show that phonon-electron interactions was the mechanism to cool electrons. For InSb nanowires, a method of fabricating clean, ordered metallic contacts was found and was extended to create superconducting tunnel probes for the purpose of performing superconducting tunneling spectroscopy. Non-equilibrium tunneling spectroscopy to demonstrate the quality of the superconducting tunneling probes and further experimentation led to the discovery of ideal fabrication parameters. Nanowires of La2/3Sr1/3MnO3 were measured to observe the domain-dominated physics observed in other similar colossal magnetoresistive materials, which manifests as multi-level noise. One of the first magnetoresistive measurements of ultrathin films of bismuth and bismuth-antimony are also presented, and it is shown that there are transport signatures consistent with the quantum size effect.","abstract_html":"Due to technological advances in bottom-up and top-down approaches in device fabrication, scientists have been able to construct devices that have dimensions on the orders of ones or tens of nanometers. Low-dimensional materials are of great interest due to the emergence of quantum effects and increased interactions between electrons, which can be exploited to create novel electronic devices. In this thesis, transport was studied in a variety of one- and two-dimensional materials. In graphene, non-equilibrium tunneling spectroscopy was used to show that phonon-electron interactions was the mechanism to cool electrons. For InSb nanowires, a method of fabricating clean, ordered metallic contacts was found and was extended to create superconducting tunnel probes for the purpose of performing superconducting tunneling spectroscopy. Non-equilibrium tunneling spectroscopy to demonstrate the quality of the superconducting tunneling probes and further experimentation led to the discovery of ideal fabrication parameters. Nanowires of La2/3Sr1/3MnO3 were measured to observe the domain-dominated physics observed in other similar colossal magnetoresistive materials, which manifests as multi-level noise. One of the first magnetoresistive measurements of ultrathin films of bismuth and bismuth-antimony are also presented, and it is shown that there are transport signatures consistent with the quantum size effect.","abstract_has_math":false,"creators":["Damasco, John Jeffrey"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Mason, Nadya","Abbamonte, Peter","Clark, Bryan","Faulkner, Thomas"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-08-23T19:51:27Z","date_published":"2019-08-23T19:51:27Z","updated_at":"2026-07-22T22:24:42Z","subjects":["Nanofabrication","graphene","carbon","superconductivity","tunnel probe","tunnel junction","InSb","III-V","semiconductor","Fabry-Perot","quantized conductance","Majorana mode","Andreev bound state","thin films","manganite","bismuth"],"languages":["en"],"rights":["Copyright 2019 John Jeffrey Damasco"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/104746","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mason, Nadya","Abbamonte, Peter","Clark, Bryan","Faulkner, Thomas"]},{"key":"dc:creator","label":"Author","values":["Damasco, John Jeffrey"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-08-23T19:51:27Z","2019-02-13","2019-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"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."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Nanofabrication","graphene","carbon","superconductivity","tunnel probe","tunnel junction","InSb","III-V","semiconductor","Fabry-Perot","quantized conductance","Majorana mode","Andreev bound state","thin films","manganite","bismuth"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2019 John Jeffrey Damasco"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/104746"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Due to technological advances in bottom-up and top-down approaches in device fabrication, scientists have been able to construct devices that have dimensions on the orders of ones or tens of nanometers. Low-dimensional materials are of great interest due to the emergence of quantum effects and increased interactions between electrons, which can be exploited to create novel electronic devices. In this thesis, transport was studied in a variety of one- and two-dimensional materials. In graphene, non-equilibrium tunneling spectroscopy was used to show that phonon-electron interactions was the mechanism to cool electrons. For InSb nanowires, a method of fabricating clean, ordered metallic contacts was found and was extended to create superconducting tunnel probes for the purpose of performing superconducting tunneling spectroscopy. Non-equilibrium tunneling spectroscopy to demonstrate the quality of the superconducting tunneling probes and further experimentation led to the discovery of ideal fabrication parameters. Nanowires of La2/3Sr1/3MnO3 were measured to observe the domain-dominated physics observed in other similar colossal magnetoresistive materials, which manifests as multi-level noise. One of the first magnetoresistive measurements of ultrathin films of bismuth and bismuth-antimony are also presented, and it is shown that there are transport signatures consistent with the quantum size effect.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2019-08-22 without embargo terms","The student, John Jeffrey Damasco, accepted the attached license on 2019-02-11 at 13:40.","The student, John Jeffrey Damasco, submitted this Dissertation for approval on 2019-02-11 at 13:45.","This Dissertation was approved for publication on 2019-02-13 at 11:43.","DSpace SAF Submission Ingestion Package generated from Vireo submission #13385 on 2019-08-22 at 14:39:34","Made available in DSpace on 2019-08-23T19:51:27Z (GMT). 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Nanowires of La2/3Sr1/3MnO3 were measured to observe the domain-dominated physics observed in other similar colossal magnetoresistive materials, which manifests as multi-level noise. One of the first magnetoresistive measurements of ultrathin films of bismuth and bismuth-antimony are also presented, and it is shown that there are transport signatures consistent with the quantum size effect.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2019-08-22 without embargo terms","The student, John Jeffrey Damasco, accepted the attached license on 2019-02-11 at 13:40.","The student, John Jeffrey Damasco, submitted this Dissertation for approval on 2019-02-11 at 13:45.","This Dissertation was approved for publication on 2019-02-13 at 11:43.","DSpace SAF Submission Ingestion Package generated from Vireo submission #13385 on 2019-08-22 at 14:39:34","Made available in DSpace on 2019-08-23T19:51:27Z (GMT). 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