{"id":512,"date":"2018-07-26T12:27:10","date_gmt":"2018-07-26T04:27:10","guid":{"rendered":"http:\/\/labstt.phy.ncu.edu.tw\/?p=512"},"modified":"2019-01-01T18:38:37","modified_gmt":"2019-01-01T10:38:37","slug":"hard-hard-coupling-assisted-anomalous-magnetoresistance-effect-in-amine-ended-single-molecule-magnetic-junction","status":"publish","type":"post","link":"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512","title":{"rendered":"Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction"},"content":{"rendered":"We proposed a single-molecule magnetic junction (SMMJ), composed of a dissociated amine-ended benzene sandwiched between two Co tip-like nanowires. To better simulate the break junction technique for real SMMJs, the first-principles calculation associated with the hard-hard coupling between a amine-linker and Co tip-atom is carried out for SMMJs with mechanical strain and under an external bias. <!--more-->\r\n\r\nWe predict an anomalous magnetoresistance (MR) effect, including strain-induced sign reversal and bias-induced enhancement of the MR value, which is in sharp contrast to the normal MR effect in conventional magnetic tunnel junctions. The underlying mechanism is the interplay between four spin-polarized currents in parallel and anti-parallel magnetic configurations, originated from the pronounced spin-up transmission feature in the parallel case and spiky transmission peaks in other three spin-polarized channels. These intriguing findings may open a new arena in which magnetotransport and hard-hard coupling are closely coupled in SMMJs and can be dually controlled either via mechanical strain or by an external bias. Published by AIP Publishing.\r\n\r\n<a href=\"https:\/\/aip.scitation.org\/doi\/10.1063\/1.4984821\">https:\/\/aip.scitation.org\/doi\/10.1063\/1.4984821<\/a>","protected":false},"excerpt":{"rendered":"We proposed a single-molecule magnetic junction (SMMJ), composed of a dissociated amine-ended benzene sandwiched between two Co tip-like nanowires. To better simulate the break junction technique for real SMMJs, the first-principles calculation associated with the hard-hard coupling between a amine-linker and Co tip-atom is carried out for SMMJs with mechanical strain and under an external [&#8230;]<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\">Read More&#8230;<span class=\"screen-reader-text\"> from Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":750,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[],"class_list":["post-512","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-newest-research"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction &#060; Theoretical and Computational Spintronics 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:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction &#060; Theoretical and Computational Spintronics Group\" \/>\n<meta property=\"og:description\" content=\"We proposed a single-molecule magnetic junction (SMMJ), composed of a dissociated amine-ended benzene sandwiched between two Co tip-like nanowires. To better simulate the break junction technique for real SMMJs, the first-principles calculation associated with the hard-hard coupling between a amine-linker and Co tip-atom is carried out for SMMJs with mechanical strain and under an external [...]Read More... from Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction\" \/>\n<meta property=\"og:url\" content=\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\" \/>\n<meta property=\"og:site_name\" content=\"Theoretical and Computational Spintronics Group\" \/>\n<meta property=\"article:published_time\" content=\"2018-07-26T04:27:10+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-01-01T10:38:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/labstt.phy.ncu.edu.tw\/wp-content\/uploads\/2018\/07\/1.4984821.figures.online.f1.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1400\" \/>\n\t<meta property=\"og:image:height\" content=\"490\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"LISE\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"LISE\" \/>\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:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512#article\",\"isPartOf\":{\"@id\":\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\"},\"author\":{\"name\":\"LISE\",\"@id\":\"https:\/\/labstt.phy.ncu.edu.tw\/#\/schema\/person\/cda02180aa6bc03cc2fee84aeba5e41d\"},\"headline\":\"Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction\",\"datePublished\":\"2018-07-26T04:27:10+00:00\",\"dateModified\":\"2019-01-01T10:38:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\"},\"wordCount\":178,\"image\":{\"@id\":\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512#primaryimage\"},\"thumbnailUrl\":\"https:\/\/labstt.phy.ncu.edu.tw\/wp-content\/uploads\/2018\/07\/1.4984821.figures.online.f1.jpeg\",\"articleSection\":[\"\u6700\u65b0\u7814\u7a76\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\",\"url\":\"https:\/\/labstt.phy.ncu.edu.tw\/en\/archives\/512\",\"name\":\"Hard-hard coupling assisted anomalous magnetoresistance effect in amine-ended single-molecule magnetic junction &#060; 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