--- res: bibo_abstract: - The quantum anomalous Hall (QAH) effect combines topology and magnetism to produce precisely quantized Hall resistance at zero magnetic field. We report the observation of a QAH effect in twisted bilayer graphene aligned to hexagonal boron nitride. The effect is driven by intrinsic strong interactions, which polarize the electrons into a single spin- and valley-resolved moiré miniband with Chern number C = 1. In contrast to magnetically doped systems, the measured transport energy gap is larger than the Curie temperature for magnetic ordering, and quantization to within 0.1% of the von Klitzing constant persists to temperatures of several kelvin at zero magnetic field. Electrical currents as small as 1 nanoampere controllably switch the magnetic order between states of opposite polarization, forming an electrically rewritable magnetic memory.@eng bibo_authorlist: - foaf_Person: foaf_givenName: M. foaf_name: Serlin, M. foaf_surname: Serlin - foaf_Person: foaf_givenName: C. L. foaf_name: Tschirhart, C. L. foaf_surname: Tschirhart - foaf_Person: foaf_givenName: Hryhoriy foaf_name: Polshyn, Hryhoriy foaf_surname: Polshyn foaf_workInfoHomepage: http://www.librecat.org/personId=edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 orcid: 0000-0001-8223-8896 - foaf_Person: foaf_givenName: Y. foaf_name: Zhang, Y. foaf_surname: Zhang - foaf_Person: foaf_givenName: J. foaf_name: Zhu, J. foaf_surname: Zhu - foaf_Person: foaf_givenName: K. foaf_name: Watanabe, K. foaf_surname: Watanabe - foaf_Person: foaf_givenName: T. foaf_name: Taniguchi, T. foaf_surname: Taniguchi - foaf_Person: foaf_givenName: L. foaf_name: Balents, L. foaf_surname: Balents - foaf_Person: foaf_givenName: A. F. foaf_name: Young, A. F. foaf_surname: Young bibo_doi: 10.1126/science.aay5533 bibo_issue: '6480' bibo_volume: 367 dct_date: 2019^xs_gYear dct_isPartOf: - http://id.crossref.org/issn/0036-8075 - http://id.crossref.org/issn/1095-9203 dct_language: eng dct_publisher: American Association for the Advancement of Science@ dct_subject: - multidisciplinary dct_title: Intrinsic quantized anomalous Hall effect in a moiré heterostructure@ fabio_hasPubmedId: '31857492' ...