{"id":{"repo_id":"umn","oai_identifier":"oai:conservancy.umn.edu:11299/104634"},"canonical_url":"https://search.dev.ndltd.org/etd/umn/oai:conservancy.umn.edu:11299/104634","repository":{"repo_id":"umn","name":"University of Minnesota","base_url":"https://conservancy.umn.edu/server/oai/request"},"display":{"title":"Nonlinear transport in two-dimensional electron gas at large filling factors.","abstract":"We studied nonlinear electrical transport in high-mobility 2D electron gas (2DEG) forming in modulation-doped GaAs/AlGaAs quantum wells. Transport nonlinearities induced by a pure dc electric field as well as by coexisting dc and microwave fields were studied at very high Landau level filling factors. It was observed that a pure dc electric field could induce transport nonlinearities phenomenologically similar to those previously discovered in microwave-irradiated 2DEG. New phenomena in magnetotransport emerged when a 2DEG was under the simultaneous influences of a dc electric field and a microwave field. The experimental observations were compared to the numerical simulations which were carried out based on a recently proposed theory. Generally speaking, good agreement between the experimental data and the numerical results was obtained. This suggested that the rich transport nonlinearities we have observed so far could all be coherently understood within this theoretical work.","abstract_html":"We studied nonlinear electrical transport in high-mobility 2D electron gas (2DEG) forming in modulation-doped GaAs/AlGaAs quantum wells. Transport nonlinearities induced by a pure dc electric field as well as by coexisting dc and microwave fields were studied at very high Landau level filling factors. It was observed that a pure dc electric field could induce transport nonlinearities phenomenologically similar to those previously discovered in microwave-irradiated 2DEG. New phenomena in magnetotransport emerged when a 2DEG was under the simultaneous influences of a dc electric field and a microwave field. The experimental observations were compared to the numerical simulations which were carried out based on a recently proposed theory. Generally speaking, good agreement between the experimental data and the numerical results was obtained. This suggested that the rich transport nonlinearities we have observed so far could all be coherently understood within this theoretical work.","abstract_has_math":false,"creators":["Chiang, Hung-Sheng"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-04","date_published":"2011-04","updated_at":"2026-07-24T05:20:07Z","subjects":["2DEG","High filling factor","High mobility","Nonlinear transport","Physics"],"languages":["en_US"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://purl.umn.edu/104634","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Chiang, Hung-Sheng"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2011-05-19T20:52:27Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2011-05-19T20:52:27Z"]},{"key":"dc:date.issued","label":"Date","values":["2011-04"]},{"key":"dc:type","label":"Dc Type","values":["Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["2DEG","High filling factor","High mobility","Nonlinear transport","Physics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://purl.umn.edu/104634"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["University of Minnesota Ph.D. dissertation. April 2011. Major: Physics. Advisor: Michael Zudov. 1 computer file (PDF); ix, 108 pages."]},{"key":"dc:description.abstract","label":"Abstract","values":["We studied nonlinear electrical transport in high-mobility 2D electron gas (2DEG) forming in modulation-doped GaAs/AlGaAs quantum wells. Transport nonlinearities induced by a pure dc electric field as well as by coexisting dc and microwave fields were studied at very high Landau level filling factors. It was observed that a pure dc electric field could induce transport nonlinearities phenomenologically similar to those previously discovered in microwave-irradiated 2DEG. New phenomena in magnetotransport emerged when a 2DEG was under the simultaneous influences of a dc electric field and a microwave field. The experimental observations were compared to the numerical simulations which were carried out based on a recently proposed theory. Generally speaking, good agreement between the experimental data and the numerical results was obtained. This suggested that the rich transport nonlinearities we have observed so far could all be coherently understood within this theoretical work."]},{"key":"dc:title","label":"Title","values":["Nonlinear transport in two-dimensional electron gas at large filling factors."]}]}],"canonical_facts":{"dc:creator":["Chiang, Hung-Sheng"],"dc:date.accessioned":["2011-05-19T20:52:27Z"],"dc:date.available":["2011-05-19T20:52:27Z"],"dc:date.issued":["2011-04"],"dc:description":["University of Minnesota Ph.D. dissertation. April 2011. Major: Physics. Advisor: Michael Zudov. 1 computer file (PDF); ix, 108 pages."],"dc:description.abstract":["We studied nonlinear electrical transport in high-mobility 2D electron gas (2DEG) forming in modulation-doped GaAs/AlGaAs quantum wells. Transport nonlinearities induced by a pure dc electric field as well as by coexisting dc and microwave fields were studied at very high Landau level filling factors. It was observed that a pure dc electric field could induce transport nonlinearities phenomenologically similar to those previously discovered in microwave-irradiated 2DEG. New phenomena in magnetotransport emerged when a 2DEG was under the simultaneous influences of a dc electric field and a microwave field. The experimental observations were compared to the numerical simulations which were carried out based on a recently proposed theory. Generally speaking, good agreement between the experimental data and the numerical results was obtained. This suggested that the rich transport nonlinearities we have observed so far could all be coherently understood within this theoretical work."],"dc:identifier.uri":["http://purl.umn.edu/104634"],"dc:language.iso":["en_US"],"dc:subject":["2DEG","High filling factor","High mobility","Nonlinear transport","Physics"],"dc:title":["Nonlinear transport in two-dimensional electron gas at large filling factors."],"dc:type":["Thesis or Dissertation"]},"updated_at":"2026-07-24T05:20:07Z"}