{"id":243,"date":"2020-09-02T17:12:57","date_gmt":"2020-09-02T21:12:57","guid":{"rendered":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/?p=243"},"modified":"2021-09-03T13:08:17","modified_gmt":"2021-09-03T17:08:17","slug":"elementor-243","status":"publish","type":"post","link":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/elementor-243\/","title":{"rendered":"THz frequency Spectrum analysis"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"243\" class=\"elementor elementor-243\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-650b17b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"650b17b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7f33639\" data-id=\"7f33639\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-092fa2a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"092fa2a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-a782bf9\" data-id=\"a782bf9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-65db977 elementor-widget elementor-widget-heading\" data-id=\"65db977\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">THz frequency spectrum analysis with a nanoscale AFM tunnel junction<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1eb2a29 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1eb2a29\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-3efd651\" data-id=\"3efd651\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4e0218a elementor-widget elementor-widget-image\" data-id=\"4e0218a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"500\" height=\"324\" src=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2020\/09\/Tunnel-junction.jpg\" class=\"attachment-large size-large wp-image-180\" alt=\"Graph depicts ATJ frequency vs. current for four different \u03c1 values (0.02, 0.5, 1.5, 3.0 THz\/ps). Frequencies increase with current for all \u03c1 values, shown by different colored lines.\" srcset=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2020\/09\/Tunnel-junction.jpg 500w, https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2020\/09\/Tunnel-junction-300x194.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c11d95b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c11d95b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-f9c0688\" data-id=\"f9c0688\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-344dd43 elementor-widget elementor-widget-text-editor\" data-id=\"344dd43\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000\">A method to perform spectrum analysis on low power signals having frequency between 0.1 and 10 THz is proposed. It utilizes a nanoscale antiferromagnetic tunnel junction (ATJ) that produces an oscillating tunneling anisotropic magnetoresistance, whose frequency is dependent on the magnitude of the driving DC current. It is shown that the ATJ output voltage is strongly dependent on the thickness of the dielectric tunneling barrier. Spectrum analysis can be performed using an ATJ, whose frequency is linearly swept with time, and a low-pass filter, and a matched filter are used for signal processing. It is also found by simulation and analytical calculations that for an ATJ with a 0.1 \u03bcm<sup>2<\/sup> footprint, the spectrum analysis can be performed over a 0.25 THz bandwidth in just 25 ns on signals that are just above the Johnson\u2013Nyquist thermal noise floor. This work has been published in Journal of Applied Physics and can be accessed<\/span> <a href=\"https:\/\/aip.scitation.org\/doi\/pdf\/10.1063\/1.5140552\">here.<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>THz frequency spectrum analysis with a nanoscale AFM tunnel junction A method to perform spectrum analysis on low power signals having frequency between 0.1 and 10 THz is proposed. It <a class=\"more-link\" href=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/elementor-243\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":61,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[7],"tags":[],"class_list":["post-243","post","type-post","status-publish","format-standard","hentry","category-publications"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>THz frequency Spectrum analysis -<\/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:\/\/sciences.ucf.edu\/physics\/afmspin\/elementor-243\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"THz frequency Spectrum analysis -\" \/>\n<meta property=\"og:description\" content=\"THz frequency spectrum analysis with a nanoscale AFM tunnel junction A method to perform spectrum analysis on low power signals having frequency between 0.1 and 10 THz is proposed. It Continue Reading &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/elementor-243\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-09-02T21:12:57+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-03T17:08:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/wp-content\/uploads\/sites\/31\/2020\/09\/Tunnel-junction.jpg\" \/>\n<meta name=\"author\" content=\"Gyan Khatri\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gyan Khatri\" \/>\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\" 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