Quantum Griffiths singularity of superconductor-metal transition in Ga thin films
The Griffiths singularity in a phase transition, caused by disorder effects, was predicted more than 40 years ago. Its signature, the divergence of the dynamical critical exponent, is challenging to observe experimentally. We report the experimental observation of the quantum Griffiths singularity i...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2015-10, Vol.350 (6260), p.542-545 |
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| creator | Xing, Ying Zhang, Hui-Min Fu, Hai-Long Liu, Haiwen Sun, Yi Peng, Jun-Ping Wang, Fa Lin, Xi Ma, Xu-Cun Xue, Qi-Kun Wang, Jian Xie, X. C. |
| description | The Griffiths singularity in a phase transition, caused by disorder effects, was predicted more than 40 years ago. Its signature, the divergence of the dynamical critical exponent, is challenging to observe experimentally. We report the experimental observation of the quantum Griffiths singularity in a two-dimensional superconducting system. We measured the transport properties of atomically thin gallium films and found that the films undergo superconductor-metal transitions with increasing magnetic field. Approaching the zero-temperature quantum critical point, we observed divergence of the dynamical critical exponent, which is consistent with the Griffiths singularity behavior. We interpret the observed superconductor-metal quantum phase transition as the infinite-randomness critical point, where the properties of the system are controlled by rare large superconducting regions. |
| doi_str_mv | 10.1126/science.aaa7154 |
| format | Article |
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We interpret the observed superconductor-metal quantum phase transition as the infinite-randomness critical point, where the properties of the system are controlled by rare large superconducting regions.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.aaa7154</identifier><identifier>PMID: 26472763</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>United States: American Association for the Advancement of Science</publisher><subject>Disorders ; Dynamical systems ; Dynamics ; Gallium ; Magnetic fields ; Metals ; Quantum physics ; Singularities ; Superconductivity ; Superconductors ; Thin films</subject><ispartof>Science (American Association for the Advancement of Science), 2015-10, Vol.350 (6260), p.542-545</ispartof><rights>Copyright © 2015 American Association for the Advancement of Science</rights><rights>Copyright © 2015, American Association for the Advancement of Science.</rights><rights>Copyright © 2015, American Association for the Advancement of Science</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c487t-4ccbc080a8cae74cc391036170c2003abeeb3dbb52a17c9ae306f488e27ab42a3</citedby><cites>FETCH-LOGICAL-c487t-4ccbc080a8cae74cc391036170c2003abeeb3dbb52a17c9ae306f488e27ab42a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24740444$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24740444$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,2884,2885,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26472763$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Xing, Ying</creatorcontrib><creatorcontrib>Zhang, Hui-Min</creatorcontrib><creatorcontrib>Fu, Hai-Long</creatorcontrib><creatorcontrib>Liu, Haiwen</creatorcontrib><creatorcontrib>Sun, Yi</creatorcontrib><creatorcontrib>Peng, Jun-Ping</creatorcontrib><creatorcontrib>Wang, Fa</creatorcontrib><creatorcontrib>Lin, Xi</creatorcontrib><creatorcontrib>Ma, Xu-Cun</creatorcontrib><creatorcontrib>Xue, Qi-Kun</creatorcontrib><creatorcontrib>Wang, Jian</creatorcontrib><creatorcontrib>Xie, X. 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We interpret the observed superconductor-metal quantum phase transition as the infinite-randomness critical point, where the properties of the system are controlled by rare large superconducting regions.</description><subject>Disorders</subject><subject>Dynamical systems</subject><subject>Dynamics</subject><subject>Gallium</subject><subject>Magnetic fields</subject><subject>Metals</subject><subject>Quantum physics</subject><subject>Singularities</subject><subject>Superconductivity</subject><subject>Superconductors</subject><subject>Thin films</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqFkc1Lw0AQxRdRtFbPnpSAFy9p9yvZ5ChFq1CQgp7DZLuxW5JN3Y9D_3u3Nip48fQY5jfDm3kIXRE8IYTmUye1MlJNAECQjB-hEcFllpYUs2M0wpjlaYFFdobOndtgHHslO0VnNOeCipyN0HIZwPjQJXOrm0b7tUucNu-hBav9LumbxIWtsrI3qyB9b9NOeWgTb8E47XVvEm2SOSR-HbXRbecu0EkDrVOXg47R2-PD6-wpXbzMn2f3i1TyQviUS1lLXGAoJCgRK1aSaJcILGn0DbVSNVvVdUaBCFmCYjhveFEoKqDmFNgY3R32bm3_EZTzVaedVG0LRvXBVaTEnBJWZvh_VNAiFyK6iejtH3TTB2viIV8UFUSwPTU9UNL2zlnVVFurO7C7iuBqH0w1BFMNwcSJm2FvqDu1-uG_k4jA9QHYuPjm3z4XHHPO2SfFlpVC</recordid><startdate>20151030</startdate><enddate>20151030</enddate><creator>Xing, Ying</creator><creator>Zhang, Hui-Min</creator><creator>Fu, Hai-Long</creator><creator>Liu, Haiwen</creator><creator>Sun, Yi</creator><creator>Peng, Jun-Ping</creator><creator>Wang, Fa</creator><creator>Lin, Xi</creator><creator>Ma, Xu-Cun</creator><creator>Xue, Qi-Kun</creator><creator>Wang, Jian</creator><creator>Xie, X. 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| subjects | Disorders Dynamical systems Dynamics Gallium Magnetic fields Metals Quantum physics Singularities Superconductivity Superconductors Thin films |
| title | Quantum Griffiths singularity of superconductor-metal transition in Ga thin films |
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