{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/29964"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/29964","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The pressure dependence of the thermoelectric power of sodium between 5°K and 14°K","abstract":"\"The effect of pressure has been measured on the thermoelectric power of sodium between 5°K and l4°K where phonon drag is believed to play a prominent role. A Superconducting Quantum Interference Device (\"\"SQUID\"\") was used to measure the tiny voltages involved. At 1 and 2 kilobars no effect was observable, but at 3 kilobars the thermoelectric power was observed to grow smaller in magnitude, but remained negative. The effect of pressure was most noticeable above 110K and was monotonically increasing with temperature above that point. The results have been compared with the predictions of a theory of phonon drag thermoelectric power by Bailyn, which are in rather good qualitative agreement with the data. The results of this experiment therefore support his contention that a detailed understanding of the lattice spectrum, rather than Fermi-surface distortion, is necessary to understand the role of phonon drag in the alkali metals.\"","abstract_html":""The effect of pressure has been measured on the thermoelectric power of sodium between 5°K and l4°K where phonon drag is believed to play a prominent role. A Superconducting Quantum Interference Device (""SQUID"") was used to measure the tiny voltages involved. At 1 and 2 kilobars no effect was observable, but at 3 kilobars the thermoelectric power was observed to grow smaller in magnitude, but remained negative. The effect of pressure was most noticeable above 110K and was monotonically increasing with temperature above that point. The results have been compared with the predictions of a theory of phonon drag thermoelectric power by Bailyn, which are in rather good qualitative agreement with the data. The results of this experiment therefore support his contention that a detailed understanding of the lattice spectrum, rather than Fermi-surface distortion, is necessary to understand the role of phonon drag in the alkali metals."","abstract_has_math":false,"creators":["Weiss, Jonathon David"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Lazarus, David"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-03-02T21:29:00Z","date_published":"2012-03-02T21:29:00Z","updated_at":"2026-07-22T22:25:29Z","subjects":["pressure dependenc","thermoelectric power","sodium"],"languages":["en"],"rights":["©1974 Weiss"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["2367990"],"render_values":[{"text":"2367990","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/29964","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lazarus, David"]},{"key":"dc:creator","label":"Author","values":["Weiss, Jonathon David"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-03-02T21:29:00Z","10000-01-01","1974"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","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."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["pressure dependenc","thermoelectric power","sodium"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["©1974 Weiss"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/29964","2367990"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"The effect of pressure has been measured on the thermoelectric power of sodium between 5°K and l4°K where phonon drag is believed to play a prominent role. A Superconducting Quantum Interference Device (\"\"SQUID\"\") was used to measure the tiny voltages involved. At 1 and 2 kilobars no effect was observable, but at 3 kilobars the thermoelectric power was observed to grow smaller in magnitude, but remained negative. The effect of pressure was most noticeable above 110K and was monotonically increasing with temperature above that point. The results have been compared with the predictions of a theory of phonon drag thermoelectric power by Bailyn, which are in rather good qualitative agreement with the data. The results of this experiment therefore support his contention that a detailed understanding of the lattice spectrum, rather than Fermi-surface distortion, is necessary to understand the role of phonon drag in the alkali metals.\"","Submitted by William Weathers (weathrs2@illinois.edu) on 2012-03-02T21:29:00Z No. of bitstreams: 1 1974_weiss.pdf: 3555503 bytes, checksum: a9ec1d3f5e6c650cff71f032bcd9b471 (MD5)","Made available in DSpace on 2012-03-02T21:29:00Z (GMT). No. of bitstreams: 1 1974_weiss.pdf: 3555503 bytes, checksum: a9ec1d3f5e6c650cff71f032bcd9b471 (MD5) Previous issue date: 1974","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Weathers (weathrs2@illinois.edu) on 2012-03-02T21:29:00Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:33:45-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: thesis","thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["The pressure dependence of the thermoelectric power of sodium between 5°K and 14°K"]}]}],"canonical_facts":{"dc:contributor":["Lazarus, David"],"dc:creator":["Weiss, Jonathon David"],"dc:date":["2012-03-02T21:29:00Z","10000-01-01","1974"],"dc:description":["\"The effect of pressure has been measured on the thermoelectric power of sodium between 5°K and l4°K where phonon drag is believed to play a prominent role. A Superconducting Quantum Interference Device (\"\"SQUID\"\") was used to measure the tiny voltages involved. At 1 and 2 kilobars no effect was observable, but at 3 kilobars the thermoelectric power was observed to grow smaller in magnitude, but remained negative. The effect of pressure was most noticeable above 110K and was monotonically increasing with temperature above that point. The results have been compared with the predictions of a theory of phonon drag thermoelectric power by Bailyn, which are in rather good qualitative agreement with the data. The results of this experiment therefore support his contention that a detailed understanding of the lattice spectrum, rather than Fermi-surface distortion, is necessary to understand the role of phonon drag in the alkali metals.\"","Submitted by William Weathers (weathrs2@illinois.edu) on 2012-03-02T21:29:00Z No. of bitstreams: 1 1974_weiss.pdf: 3555503 bytes, checksum: a9ec1d3f5e6c650cff71f032bcd9b471 (MD5)","Made available in DSpace on 2012-03-02T21:29:00Z (GMT). No. of bitstreams: 1 1974_weiss.pdf: 3555503 bytes, checksum: a9ec1d3f5e6c650cff71f032bcd9b471 (MD5) Previous issue date: 1974","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Weathers (weathrs2@illinois.edu) on 2012-03-02T21:29:00Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:33:45-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: thesis","thesis","U of I Only"],"dc:identifier":["http://hdl.handle.net/2142/29964","2367990"],"dc:language":["en"],"dc:rights":["©1974 Weiss"],"dc:subject":["pressure dependenc","thermoelectric power","sodium"],"dc:title":["The pressure dependence of the thermoelectric power of sodium between 5°K and 14°K"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:29Z"}