{"id":238267,"date":"2018-11-06T17:19:51","date_gmt":"2018-11-07T01:19:51","guid":{"rendered":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/msr-research-item\/the-enigmatic-125-fractional-quantum-hall-effect\/"},"modified":"2018-11-06T17:19:51","modified_gmt":"2018-11-07T01:19:51","slug":"the-enigmatic-125-fractional-quantum-hall-effect","status":"publish","type":"msr-research-item","link":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/publication\/the-enigmatic-125-fractional-quantum-hall-effect\/","title":{"rendered":"The enigmatic 12\/5 fractional quantum Hall effect"},"content":{"rendered":"<p>We numerically study the fractional quantum Hall effect at filling factors \u0017 = 12=5 and 13\/5 (the particle-hole conjugate of 12\/5) in high-quality two-dimensional GaAs heterostructures via exact diagonalization including finite well width and Landau level mixing. We find that Landau level mixing suppresses \u0017 = 13=5 fractional quantum Hall effect relative to \u0017 = 12=5. By contrast, we find both \u0017 = 2=5 and (its particle-hole conjugate) \u0017 = 3=5 fractional quantum Hall effects in the lowest Landau level to be robust under Landau level mixing and finite well-width corrections. Our results provide a possible explanation for the experimental absence of the 13\/5 fractional quantum Hall state as caused by Landau level mixing effects.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We numerically study the fractional quantum Hall effect at filling factors \u0017 = 12=5 and 13\/5 (the particle-hole conjugate of 12\/5) in high-quality two-dimensional GaAs heterostructures via exact diagonalization including finite well width and Landau level mixing. We find that Landau level mixing suppresses \u0017 = 13=5 fractional quantum Hall effect relative to \u0017 = [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"","msr_page_range_start":"","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"","msr_doi":"","msr_arxiv_id":"","msr_s2_paper_id":"","msr_mag_id":"","msr_pubmed_id":"","msr_other_authors":"Kiryl Pakrouski, Matthias Troyer, Yang-Le Wu, Sankar Das Sarma, Michael R. 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