{"title":"Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order","issue":"1","month":"03","publication_identifier":{"issn":["0003-0503"]},"_id":"10693","citation":{"short":"H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020.","apa":"Zhou, H., Polshyn, H., Tanaguchi, T., Watanabe, K., &#38; Young, A. (2020). Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. In <i>APS March Meeting 2020</i> (Vol. 65). Denver, CO, United States: American Physical Society.","ista":"Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. 2020. Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B54. 00007.","ama":"Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. In: <i>APS March Meeting 2020</i>. Vol 65. American Physical Society; 2020.","ieee":"H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, and A. Young, “Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order,” in <i>APS March Meeting 2020</i>, Denver, CO, United States, 2020, vol. 65, no. 1.","chicago":"Zhou, Haoxin, Hryhoriy Polshyn, Takashi Tanaguchi, Kenji Watanabe, and Andrea Young. “Sublattice Resolved Spin Wave Transport through Graphene Fractional Quantum Hall States as a Probe of Isospin Order.” In <i>APS March Meeting 2020</i>, Vol. 65. American Physical Society, 2020.","mla":"Zhou, Haoxin, et al. “Sublattice Resolved Spin Wave Transport through Graphene Fractional Quantum Hall States as a Probe of Isospin Order.” <i>APS March Meeting 2020</i>, vol. 65, no. 1, B54. 00007, American Physical Society, 2020."},"type":"conference","oa_version":"Published Version","oa":1,"publisher":"American Physical Society","publication_status":"published","conference":{"location":"Denver, CO, United States","start_date":"2020-03-02","end_date":"2020-03-06","name":"APS: American Physical Society"},"author":[{"first_name":"Haoxin","full_name":"Zhou, Haoxin","last_name":"Zhou"},{"full_name":"Polshyn, Hryhoriy","orcid":"0000-0001-8223-8896","first_name":"Hryhoriy","last_name":"Polshyn","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"last_name":"Tanaguchi","full_name":"Tanaguchi, Takashi","first_name":"Takashi"},{"last_name":"Watanabe","first_name":"Kenji","full_name":"Watanabe, Kenji"},{"last_name":"Young","first_name":"Andrea","full_name":"Young, Andrea"}],"language":[{"iso":"eng"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","date_created":"2022-01-27T10:50:10Z","article_number":"B54. 00007","alternative_title":["Bulletin of the American Physical Society"],"publication":"APS March Meeting 2020","date_published":"2020-03-01T00:00:00Z","article_processing_charge":"No","year":"2020","volume":65,"extern":"1","main_file_link":[{"open_access":"1","url":"https://meetings.aps.org/Meeting/MAR20/Session/B54.7"}],"abstract":[{"text":"High quality graphene heterostructures host an array of fractional quantum Hall isospin ferromagnets with diverse spin and valley orders. While a variety of phase transitions have been observed, disentangling the isospin phase diagram of these states is hampered by the absence of direct probes of spin and valley order. I will describe nonlocal transport measurements based on launching spin waves from a gate defined lateral heterojunction, performed in ultra-clean Corbino geometry graphene devices. At high magnetic fields, we find that the spin-wave transport signal is detected in all FQH states between ν = 0 and 1; however, between ν = 1 and 2 only odd numerator FQH states show finite nonlocal transport, despite the identical ground state spin polarizations in odd- and even numerator states. The results reveal that the neutral spin-waves are both spin and sublattice polarized making them a sensitive probe of ground state sublattice structure. Armed with this understanding, we use nonlocal transport signal to a magnetic field tuned isospin phase transition, showing that the emergent even denominator state at ν = 1/2 in monolayer graphene is indeed a multicomponent state featuring equal populations on each sublattice.","lang":"eng"}],"status":"public","date_updated":"2022-01-27T10:58:38Z","intvolume":"        65","quality_controlled":"1","day":"01"}