{"id":8458,"date":"2018-04-05T20:26:22","date_gmt":"2018-04-05T20:26:22","guid":{"rendered":"https:\/\/senngroup.com\/?p=8458"},"modified":"2018-04-05T20:26:22","modified_gmt":"2018-04-05T20:26:22","slug":"improper-ferroelectric-polarization-charge-ordering","status":"publish","type":"post","link":"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/","title":{"rendered":"Improper ferroelectric polarization in a perovskite driven by intersite charge transfer and ordering"},"content":{"rendered":"<p><a href=\"https:\/\/journals.aps.org\/prb\/pdf\/10.1103\/PhysRevB.97.144102\" target=\"_blank\" rel=\"noopener\">Wei-Tin Chen, Chin-Wei Wang, Hung-Cheng Wu, Fang-Cheng Chou, Hung-Duen Yang, Arkadiy Simonov, and Mark S. Senn, Phys. Rev. B 97, 144102 (2018)<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>There has recently been renewed interest in improper ferroelectricity due to the discovery of a \u201chybrid\u201d mechanism by which two nonpolar lattice modes couple to a third polar mode. Here, the authors demonstrate that the polar ground state of perovskite HgMn3Mn4O12 emerges due to electronic instabilities that drive charge and orbital ordering on the A- and B-sites. These order parameters couple to polar displacements (P) in a manner conceptually similar to hybrid improper ferroelectricity. The results open up a possible route for electronic control of orbital ordering &#8211; an appealing prospect given the technologically important properties dependent on such states<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Wei-Tin Chen, Chin-Wei Wang, Hung-Cheng Wu, Fang-Cheng Chou, Hung-Duen Yang, Arkadiy Simonov, and Mark S. Senn, Phys. Rev. B 97, 144102 (2018) &nbsp; There has recently been renewed interest in<br \/><a href=\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\" class=\"more\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":8459,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[64],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Improper ferroelectric polarization in a perovskite driven by intersite charge transfer and ordering - SENN GROUP<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Improper ferroelectric polarization in a perovskite driven by intersite charge transfer and ordering - SENN GROUP\" \/>\n<meta property=\"og:description\" content=\"Wei-Tin Chen, Chin-Wei Wang, Hung-Cheng Wu, Fang-Cheng Chou, Hung-Duen Yang, Arkadiy Simonov, and Mark S. 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B 97, 144102 (2018) &nbsp; There has recently been renewed interest inRead more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\" \/>\n<meta property=\"og:site_name\" content=\"SENN GROUP\" \/>\n<meta property=\"article:published_time\" content=\"2018-04-05T20:26:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/senngroup.com\/wp-content\/uploads\/2018\/04\/PRB_Chen.png\" \/>\n\t<meta property=\"og:image:width\" content=\"2335\" \/>\n\t<meta property=\"og:image:height\" content=\"1099\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Mark\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\"},\"author\":{\"name\":\"Mark\",\"@id\":\"https:\/\/senngroup.com\/#\/schema\/person\/56efbdd98406e419d0c1fb8d15561eda\"},\"headline\":\"Improper ferroelectric polarization in a perovskite driven by intersite charge transfer and ordering\",\"datePublished\":\"2018-04-05T20:26:22+00:00\",\"dateModified\":\"2018-04-05T20:26:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\"},\"wordCount\":135,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/senngroup.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/senngroup.com\/wp-content\/uploads\/2018\/04\/PRB_Chen.png\",\"articleSection\":[\"Publications\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\",\"url\":\"https:\/\/senngroup.com\/improper-ferroelectric-polarization-charge-ordering\/\",\"name\":\"Improper ferroelectric polarization in a perovskite driven by intersite charge transfer and ordering - 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