Chalcogen-based layered superconductors with a litharge structure such as FeS and FeSe mono-layers undergo structural and superconducting phase transitions that are tunable by doping. Representing another material platform with a litharge structure but without valence d-electrons, SnO monolayers also display a structural ground state with a degenerate rectangular unit cell at zero temperature and a charge-tunable energy barrier that leads to a thermally-controllable structural phase change. Doped SnO monolayers with rectangular degenerate unit cells give rise to two-dimensional multiferroicity. Their two-dimensional elastic energy landscape adopts a basic analytic expression that is employed to discuss this structural transition. The results contained in this thesis increase our intuition on two-dimensional phase transitions and their effects on the properties of two-dimensional atomic materials with structural degeneracies.
","abstract_html":"<p>Chalcogen-based layered superconductors with a litharge structure such as FeS and FeSe mono-layers undergo structural and superconducting phase transitions that are tunable by doping. Representing another material platform with a litharge structure but without valence d-electrons, SnO monolayers also display a structural ground state with a degenerate rectangular unit cell at zero temperature and a charge-tunable energy barrier that leads to a thermally-controllable structural phase change. Doped SnO monolayers with rectangular degenerate unit cells give rise to two-dimensional multiferroicity. Their two-dimensional elastic energy landscape adopts a basic analytic expression that is employed to discuss this structural transition. The results contained in this thesis increase our intuition on two-dimensional phase transitions and their effects on the properties of two-dimensional atomic materials with structural degeneracies. </p>","abstract_has_math":false,"creators":["Sharmin, Afsana"],"institution":null,"degree_name":"Master of Science in Physics (MS)","degree_level":"Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Singh, Surendra P.","Churchill, Hugh O.H."],"advisors":["Barraza-Lopez, Salvador"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-12-01T08:00:00Z","date_published":"2017-12-01T08:00:00Z","updated_at":"2026-07-24T00:58:14Z","subjects":["Monolayer","Multiferroicity","SnO Monolayers","Structural Degenarcies","Two-dimensional Phase Transition","Atomic, Molecular and Optical Physics","Nanoscience and Nanotechnology","Semiconductor and Optical Materials"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarworks.uark.edu/etd/2565","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Singh, Surendra P.","Churchill, Hugh O.H."]},{"key":"dc:contributor.advisor","label":"Advisor","values":["Barraza-Lopez, Salvador"]},{"key":"dc:creator","label":"Author","values":["Sharmin, Afsana"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2024-02-06T08:00:00Z"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Physics (MS)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Monolayer","Multiferroicity","SnO Monolayers","Structural Degenarcies","Two-dimensional Phase Transition","Atomic, Molecular and Optical Physics","Nanoscience and Nanotechnology","Semiconductor and Optical Materials"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarworks.uark.edu/etd/2565"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Chalcogen-based layered superconductors with a litharge structure such as FeS and FeSe mono-layers undergo structural and superconducting phase transitions that are tunable by doping. Representing another material platform with a litharge structure but without valence d-electrons, SnO monolayers also display a structural ground state with a degenerate rectangular unit cell at zero temperature and a charge-tunable energy barrier that leads to a thermally-controllable structural phase change. Doped SnO monolayers with rectangular degenerate unit cells give rise to two-dimensional multiferroicity. Their two-dimensional elastic energy landscape adopts a basic analytic expression that is employed to discuss this structural transition. The results contained in this thesis increase our intuition on two-dimensional phase transitions and their effects on the properties of two-dimensional atomic materials with structural degeneracies.
"]},{"key":"dc:title","label":"Title","values":["Structural and Elastic Properties of Degenerate SnO Monolayers at Finite Temperature"]}]}],"canonical_facts":{"dc:contributor":["Singh, Surendra P.","Churchill, Hugh O.H."],"dc:contributor.advisor":["Barraza-Lopez, Salvador"],"dc:creator":["Sharmin, Afsana"],"dc:date":["2017"],"dc:date.available":["2024-02-06T08:00:00Z"],"dc:description.abstract":["Chalcogen-based layered superconductors with a litharge structure such as FeS and FeSe mono-layers undergo structural and superconducting phase transitions that are tunable by doping. Representing another material platform with a litharge structure but without valence d-electrons, SnO monolayers also display a structural ground state with a degenerate rectangular unit cell at zero temperature and a charge-tunable energy barrier that leads to a thermally-controllable structural phase change. Doped SnO monolayers with rectangular degenerate unit cells give rise to two-dimensional multiferroicity. Their two-dimensional elastic energy landscape adopts a basic analytic expression that is employed to discuss this structural transition. The results contained in this thesis increase our intuition on two-dimensional phase transitions and their effects on the properties of two-dimensional atomic materials with structural degeneracies.
"],"dc:identifier":["https://scholarworks.uark.edu/etd/2565"],"dc:subject":["Monolayer","Multiferroicity","SnO Monolayers","Structural Degenarcies","Two-dimensional Phase Transition","Atomic, Molecular and Optical Physics","Nanoscience and Nanotechnology","Semiconductor and Optical Materials"],"dc:title":["Structural and Elastic Properties of Degenerate SnO Monolayers at Finite Temperature"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science in Physics (MS)"]},"updated_at":"2026-07-24T00:58:14Z"}