{"id":14258,"date":"2016-12-02T14:49:33","date_gmt":"2016-12-02T14:49:33","guid":{"rendered":"https:\/\/bioengineer.org\/superconductivity-of-pure-bismuth-crystal-at-0-00053-k\/"},"modified":"2016-12-02T14:49:33","modified_gmt":"2016-12-02T14:49:33","slug":"superconductivity-of-pure-bismuth-crystal-at-0-00053-k","status":"publish","type":"post","link":"https:\/\/bioengineer.org\/superconductivity-of-pure-bismuth-crystal-at-0-00053-k\/","title":{"rendered":"Superconductivity of pure Bismuth crystal at 0.00053 K"},"content":{"rendered":"

The properties of the 83rd element of the periodic table, namely, Bismuth (Bi) have been studied for more than a century and still continues to draw enormous scientific interests due to its anomalous electronic properties. <\/p>\n

Bulk rhombohedral Bismuth (Bi) at ambient pressure is a semi-metal and it remains in the normal state down to 0.010 K. Unlike metals where there is roughly one mobile electron per atom, in a semi-metal like Bi, the concentration of mobile electrons is extremely low (100,000 atoms share a single mobile electron). Hence, the superconductivity (SC) in bulk is thought to be very unlikely due to this extremely low carrier density. <\/p>\n

Now, a group of TIFR scientists led by Professor S. Ramakrishnan have discovered superconductivity of a high quality single crystal of Bi (99.998% pure) at 0.00053 K with a critical field of 0.000005 Tesla (nearly 1\/8 of earth's magnetic field). The discovery was made by observing a diamagnetic signal using a home made ultra sensitive magnetometer which is housed in a state of the art TIFR copper nuclear refrigerator built in 2011. This discovery cannot be explained by standard models of superconductivity. A new theory is necessary since the assumption that the electronic (Fermi) energy is much larger than the lattice (vibration) energy used in standard models fails in Bismuth. <\/p>\n

This exciting discovery has recently been published in Science (online 1 Dec 2016 http:\/\/science.sciencemag.org\/content\/early\/2016\/11\/30\/science.aaf8227) <\/p>\n

###<\/p>\n

Media Contact<\/strong><\/p>\n

S. Ramakrishnan
ramky@tifr.res.in<\/p>\n

http:\/\/www.tifr.res.in <\/p>\n

############<\/p>\n\n

Story Source: <\/b>Materials<\/a> provided by Scienmag<\/span><\/strong><\/p>\n\n","protected":false},"excerpt":{"rendered":"

The properties of the 83rd element of the periodic table, namely, Bismuth (Bi) have been studied for more than a century and still continues to draw enormous scientific interests due to its anomalous ..<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"footnotes":""},"categories":[185],"tags":[],"class_list":["post-14258","post","type-post","status-publish","format-standard","hentry","category-science-news"],"_links":{"self":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/posts\/14258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/comments?post=14258"}],"version-history":[{"count":0,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/posts\/14258\/revisions"}],"wp:attachment":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/media?parent=14258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/categories?post=14258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/tags?post=14258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} BIOENGINEER.ORG

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