{"id":275,"date":"2018-07-18T16:27:06","date_gmt":"2018-07-18T16:27:06","guid":{"rendered":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/?page_id=275"},"modified":"2018-12-13T18:51:53","modified_gmt":"2018-12-13T18:51:53","slug":"current-phase-relations","status":"publish","type":"page","link":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/research\/current-phase-relations\/","title":{"rendered":"Current-Phase Relations"},"content":{"rendered":"<p>The on-chip field coil on our <a href=\"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/research\/sensor-development\/\">scanning SQUID susceptometers<\/a>&nbsp;allows us to directly measure the current-phase relation (CPR) of Josephson junctions embedded in mesoscopic superconducting rings.<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" src=\"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-content\/uploads\/2018\/12\/CPR-loop7-3D-1024x576.png\" alt=\"\" class=\"wp-image-1044\" width=\"559\" height=\"314\" srcset=\"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-content\/uploads\/2018\/12\/CPR-loop7-3D-1024x576.png 1024w, https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-content\/uploads\/2018\/12\/CPR-loop7-3D-300x169.png 300w, https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-content\/uploads\/2018\/12\/CPR-loop7-3D-768x432.png 768w, https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-content\/uploads\/2018\/12\/CPR-loop7-3D.png 1920w\" sizes=\"(max-width: 559px) 100vw, 559px\" \/><figcaption>Schematic of a CPR measurement where the Josephson junction consists of a semiconductor nanowire (dark gray) proximitized by superconducting aluminum (light gray). The phase across the junction is tuned by the field coil (blue), and the resulting supercurrent is measured by the pickup loop (red).<\/figcaption><\/figure><\/div>\n\n\n<p>This page is currently under construction. See the following CPR publications for more details:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.nature.com\/articles\/nphys4224\">Current\u2013phase relations of few-mode InAs nanowire Josephson junctions<\/a><br><em>Nature Physics<\/em> <strong>13<\/strong>, 1177\u20131181 (2017).<\/li>\n<li><a href=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/PhysRevLett.114.066801\">Nonsinusoidal Current-Phase Relationship in Josephson Junctions from the 3D Topological Insulator HgTe<\/a><br><em>Physical Review Letters<\/em> <strong>114<\/strong>, 066801 (2015).<\/li>\n<li><a href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/nl400997k\">Direct Measurement of Current-Phase Relations in Superconductor\/Topological Insulator\/Superconductor Junctions<\/a><br><em>Nano Letters<\/em>, <strong>2013<\/strong>, 13 (7), pp 3086\u20133092.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The on-chip field coil on our scanning SQUID susceptometers&nbsp;allows us to directly measure the current-phase relation (CPR) of Josephson junctions embedded in mesoscopic superconducting rings. This page is currently under construction. See the following CPR publications for more details: Current\u2013phase relations of few-mode InAs nanowire Josephson junctionsNature Physics 13, 1177\u20131181 (2017). Nonsinusoidal Current-Phase Relationship in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":127,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/pages\/275"}],"collection":[{"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/comments?post=275"}],"version-history":[{"count":4,"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/pages\/275\/revisions"}],"predecessor-version":[{"id":1048,"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/pages\/275\/revisions\/1048"}],"up":[{"embeddable":true,"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/pages\/127"}],"wp:attachment":[{"href":"https:\/\/web.stanford.edu\/group\/moler\/cgi-bin\/home\/wp-json\/wp\/v2\/media?parent=275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}