{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/77204"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/77204","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Energy Bands and Superlattice Formation in Titanium Diselenide","abstract":"U of I Only","abstract_html":"U of I Only","abstract_has_math":false,"creators":["Delong, Bancherd"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-05-13T15:22:27Z","date_published":"2015-05-13T15:22:27Z","updated_at":"2026-07-22T22:26:10Z","subjects":["Physics, Condensed Matter"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8127579"],"render_values":[{"text":"(UMI)AAI8127579","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/77204","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Delong, Bancherd"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-05-13T15:22:27Z","10000-01-01","1981"]},{"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":["Physics, Condensed Matter"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/77204","(UMI)AAI8127579"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["U of I Only","120 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1981.","The superlattice formation in TiSe(,2) is related to a soft phonon mode near the zone boundary. This mode is supported by a coupling of the electrons at L and the holes at (GAMMA), which causes an anomalously large electronic susceptibility. When the transition occurs, a large portion of the Fermi surface gaps, new electronic states and energy-bands are formed, resulting in the lowering of the electronic energy. The 2a(,o) x 2a(,o) superlattice was directly observed by electron diffraction in dilute Zr-doped TiSe(,2) crystals. The phase transition is critically suppressed in the range 14-15% of Zr. The powerful technique of angle-resolved photoemission spectroscopy has been extended to low temperature. Changes in the energy band structure of TiSe(,2) due to superlattice formation were observed for the first time.","Made available in DSpace on 2015-05-13T15:22:27Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8127579.PDF: 3481806 bytes, checksum: 8d30bbeaafef32a29b4f7a6f5b5eedcf (MD5) Previous issue date: 1981","Embargo set by: Seth Robbins for item 78415 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs"]},{"key":"dc:title","label":"Title","values":["Energy Bands and Superlattice Formation in Titanium Diselenide"]}]}],"canonical_facts":{"dc:creator":["Delong, Bancherd"],"dc:date":["2015-05-13T15:22:27Z","10000-01-01","1981"],"dc:description":["U of I Only","120 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1981.","The superlattice formation in TiSe(,2) is related to a soft phonon mode near the zone boundary. This mode is supported by a coupling of the electrons at L and the holes at (GAMMA), which causes an anomalously large electronic susceptibility. When the transition occurs, a large portion of the Fermi surface gaps, new electronic states and energy-bands are formed, resulting in the lowering of the electronic energy. The 2a(,o) x 2a(,o) superlattice was directly observed by electron diffraction in dilute Zr-doped TiSe(,2) crystals. The phase transition is critically suppressed in the range 14-15% of Zr. The powerful technique of angle-resolved photoemission spectroscopy has been extended to low temperature. Changes in the energy band structure of TiSe(,2) due to superlattice formation were observed for the first time.","Made available in DSpace on 2015-05-13T15:22:27Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8127579.PDF: 3481806 bytes, checksum: 8d30bbeaafef32a29b4f7a6f5b5eedcf (MD5) Previous issue date: 1981","Embargo set by: Seth Robbins for item 78415 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs"],"dc:identifier":["http://hdl.handle.net/2142/77204","(UMI)AAI8127579"],"dc:language":["eng"],"dc:subject":["Physics, Condensed Matter"],"dc:title":["Energy Bands and Superlattice Formation in Titanium Diselenide"],"dc:type":["text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:10Z"}