{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/20095"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/20095","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Photoemission and scanning tunneling microscope studies of quantum well and metal layer structures","abstract":"A number of different metal layer structures have been examined using angle-resolved photoemission and scanning tunneling microscopy. In the past, research pertaining to electronic properties of quantum wells, interfaces, and superlattices has been mostly confined to the realm of semiconductor physics. However, the experiments described in this thesis demonstrate that such metal structures can be successfully probed with angle-resolved photoemission, revealing interesting electronic properties of these systems and opening a new frontier in experimental solid state research.","abstract_html":"A number of different metal layer structures have been examined using angle-resolved photoemission and scanning tunneling microscopy. In the past, research pertaining to electronic properties of quantum wells, interfaces, and superlattices has been mostly confined to the realm of semiconductor physics. However, the experiments described in this thesis demonstrate that such metal structures can be successfully probed with angle-resolved photoemission, revealing interesting electronic properties of these systems and opening a new frontier in experimental solid state research.","abstract_has_math":false,"creators":["Mueller, Mark Andreas"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Chiang, Tai-Chang"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:28:38Z","date_published":"2011-05-07T12:28:38Z","updated_at":"2026-07-22T22:25:15Z","subjects":["Physics, Condensed Matter"],"languages":["eng"],"rights":["Copyright 1990 Mueller, Mark Andreas"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9114354","(UMI)AAI9114354"],"render_values":[{"text":"AAI9114354","href":null,"code":true},{"text":"(UMI)AAI9114354","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/20095","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Chiang, Tai-Chang"]},{"key":"dc:creator","label":"Author","values":["Mueller, Mark Andreas"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:28:38Z","10000-01-01","1990"]},{"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"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1990 Mueller, Mark Andreas"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9114354","(UMI)AAI9114354","http://hdl.handle.net/2142/20095"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["A number of different metal layer structures have been examined using angle-resolved photoemission and scanning tunneling microscopy. In the past, research pertaining to electronic properties of quantum wells, interfaces, and superlattices has been mostly confined to the realm of semiconductor physics. However, the experiments described in this thesis demonstrate that such metal structures can be successfully probed with angle-resolved photoemission, revealing interesting electronic properties of these systems and opening a new frontier in experimental solid state research.","Experiments were performed using the single layer Ag/Cu(111) and Ag/Si(111) systems, the double layer Cu/Ag/Cu(111) and Au/Ag/Cu(111) systems, and Ag-Au superlattices. Quantum well states and resonances were observed in Ag/Cu(111) photoemission spectra. In this experiment, different overlayer thicknesses were grown, and hundreds of spectra were recorded for various normal and off-normal emission angles. Analysis of the quantum state photoemission data enabled a determination of the Ag sp bulk band structure. The phase shifts of Ag-vacuum and Ag-Cu boundaries were obtained in an experiment utilizing the Cu/Ag/Cu(111) double layer system. With the growth of Cu on Ag/Cu(111), the evolution of the top Ag boundary from Ag-vacuum to Ag-Cu produced measurable quantum state shifts. In a Ag-Au superlattice photoemission experiment, minibands and the gaps between these minibands were observed. The Ag/Si(111) overlayer was examined with both photoemission and STM. While quantum states were observed with photoemission, STM images show Ag layer growth in the form of (111) (100-250A)$\\sp2$ domains. An experiment involving another system, Ca/Si(111), was the first STM study of alkali metal deposition. Images reveal the location of Ca on Si(111)-(7 x 7) for low Ca coverages. At higher Ca coverages and moderate annealing temperatures, a silicide forms whose reconstruction is (2 x 1). With higher annealing temperatures, a (3 x 1) reconstruction is observed.","Made available in DSpace on 2011-05-07T12:28:38Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9114354.pdf: 3855792 bytes, checksum: 446933f7abb540190d9a19477e78cd6a (MD5) Previous issue date: 1990","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:41:31Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:17:59-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Photoemission and scanning tunneling microscope studies of quantum well and metal layer structures"]}]}],"canonical_facts":{"dc:contributor":["Chiang, Tai-Chang"],"dc:creator":["Mueller, Mark Andreas"],"dc:date":["2011-05-07T12:28:38Z","10000-01-01","1990"],"dc:description":["A number of different metal layer structures have been examined using angle-resolved photoemission and scanning tunneling microscopy. In the past, research pertaining to electronic properties of quantum wells, interfaces, and superlattices has been mostly confined to the realm of semiconductor physics. However, the experiments described in this thesis demonstrate that such metal structures can be successfully probed with angle-resolved photoemission, revealing interesting electronic properties of these systems and opening a new frontier in experimental solid state research.","Experiments were performed using the single layer Ag/Cu(111) and Ag/Si(111) systems, the double layer Cu/Ag/Cu(111) and Au/Ag/Cu(111) systems, and Ag-Au superlattices. Quantum well states and resonances were observed in Ag/Cu(111) photoemission spectra. In this experiment, different overlayer thicknesses were grown, and hundreds of spectra were recorded for various normal and off-normal emission angles. Analysis of the quantum state photoemission data enabled a determination of the Ag sp bulk band structure. The phase shifts of Ag-vacuum and Ag-Cu boundaries were obtained in an experiment utilizing the Cu/Ag/Cu(111) double layer system. With the growth of Cu on Ag/Cu(111), the evolution of the top Ag boundary from Ag-vacuum to Ag-Cu produced measurable quantum state shifts. In a Ag-Au superlattice photoemission experiment, minibands and the gaps between these minibands were observed. The Ag/Si(111) overlayer was examined with both photoemission and STM. While quantum states were observed with photoemission, STM images show Ag layer growth in the form of (111) (100-250A)$\\sp2$ domains. An experiment involving another system, Ca/Si(111), was the first STM study of alkali metal deposition. Images reveal the location of Ca on Si(111)-(7 x 7) for low Ca coverages. At higher Ca coverages and moderate annealing temperatures, a silicide forms whose reconstruction is (2 x 1). With higher annealing temperatures, a (3 x 1) reconstruction is observed.","Made available in DSpace on 2011-05-07T12:28:38Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9114354.pdf: 3855792 bytes, checksum: 446933f7abb540190d9a19477e78cd6a (MD5) Previous issue date: 1990","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:41:31Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:17:59-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI9114354","(UMI)AAI9114354","http://hdl.handle.net/2142/20095"],"dc:language":["eng"],"dc:rights":["Copyright 1990 Mueller, Mark Andreas"],"dc:subject":["Physics, Condensed Matter"],"dc:title":["Photoemission and scanning tunneling microscope studies of quantum well and metal layer structures"],"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":"2026-07-22T22:25:15Z"}