Detection of a superconducting phase in a two-atom layer of hexagonal Ga film grown on semiconducting GaN(0001)
The recent observation of the superconducting state at atomic scale has motivated the pursuit of exotic condensed phases in two-dimensional (2D) systems. Here we report on a superconducting phase in two-monolayer crystalline Ga films epitaxially grown on wide-band-gap semiconductor GaN(0001). This p...
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| Veröffentlicht in: | Physical review letters 2015-03, Vol.114 (10), p.107003-107003, Article 107003 |
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| creator | Zhang, Hui-Min Sun, Yi Li, Wei Peng, Jun-Ping Song, Can-Li Xing, Ying Zhang, Qinghua Guan, Jiaqi Li, Zhi Zhao, Yanfei Ji, Shuaihua Wang, Lili He, Ke Chen, Xi Gu, Lin Ling, Langsheng Tian, Mingliang Li, Lian Xie, X C Liu, Jianping Yang, Hui Xue, Qi-Kun Wang, Jian Ma, Xucun |
| description | The recent observation of the superconducting state at atomic scale has motivated the pursuit of exotic condensed phases in two-dimensional (2D) systems. Here we report on a superconducting phase in two-monolayer crystalline Ga films epitaxially grown on wide-band-gap semiconductor GaN(0001). This phase exhibits a hexagonal structure and only 0.552 nm in thickness, nevertheless, brings about a superconducting transition temperature Tc as high as 5.4 K, confirmed by in situ scanning tunneling spectroscopy and ex situ electrical magnetotransport and magnetization measurements. The anisotropy of critical magnetic field and Berezinski-Kosterlitz-Thouless-like transition are observed, typical for the 2D superconductivity. Our results demonstrate a novel platform for exploring atomic-scale 2D superconductors, with great potential for understanding the interface superconductivity. |
| doi_str_mv | 10.1103/physrevlett.114.107003 |
| format | Article |
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Here we report on a superconducting phase in two-monolayer crystalline Ga films epitaxially grown on wide-band-gap semiconductor GaN(0001). This phase exhibits a hexagonal structure and only 0.552 nm in thickness, nevertheless, brings about a superconducting transition temperature Tc as high as 5.4 K, confirmed by in situ scanning tunneling spectroscopy and ex situ electrical magnetotransport and magnetization measurements. The anisotropy of critical magnetic field and Berezinski-Kosterlitz-Thouless-like transition are observed, typical for the 2D superconductivity. Our results demonstrate a novel platform for exploring atomic-scale 2D superconductors, with great potential for understanding the interface superconductivity.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/physrevlett.114.107003</identifier><identifier>PMID: 25815961</identifier><language>eng</language><publisher>United States</publisher><subject>Crystal structure ; Epitaxial growth ; Magnetic fields ; Magnetization ; Semiconductors ; Superconductivity ; Transition temperature ; Two dimensional</subject><ispartof>Physical review letters, 2015-03, Vol.114 (10), p.107003-107003, Article 107003</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c511t-24ec280459fa0373a346cb84b89ad3b084eb921739ff3541e3a7e1c91a9bf6b93</citedby><cites>FETCH-LOGICAL-c511t-24ec280459fa0373a346cb84b89ad3b084eb921739ff3541e3a7e1c91a9bf6b93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,2863,2864,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25815961$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhang, Hui-Min</creatorcontrib><creatorcontrib>Sun, Yi</creatorcontrib><creatorcontrib>Li, Wei</creatorcontrib><creatorcontrib>Peng, Jun-Ping</creatorcontrib><creatorcontrib>Song, Can-Li</creatorcontrib><creatorcontrib>Xing, Ying</creatorcontrib><creatorcontrib>Zhang, Qinghua</creatorcontrib><creatorcontrib>Guan, Jiaqi</creatorcontrib><creatorcontrib>Li, Zhi</creatorcontrib><creatorcontrib>Zhao, Yanfei</creatorcontrib><creatorcontrib>Ji, Shuaihua</creatorcontrib><creatorcontrib>Wang, Lili</creatorcontrib><creatorcontrib>He, Ke</creatorcontrib><creatorcontrib>Chen, Xi</creatorcontrib><creatorcontrib>Gu, Lin</creatorcontrib><creatorcontrib>Ling, Langsheng</creatorcontrib><creatorcontrib>Tian, Mingliang</creatorcontrib><creatorcontrib>Li, Lian</creatorcontrib><creatorcontrib>Xie, X C</creatorcontrib><creatorcontrib>Liu, Jianping</creatorcontrib><creatorcontrib>Yang, Hui</creatorcontrib><creatorcontrib>Xue, Qi-Kun</creatorcontrib><creatorcontrib>Wang, Jian</creatorcontrib><creatorcontrib>Ma, Xucun</creatorcontrib><title>Detection of a superconducting phase in a two-atom layer of hexagonal Ga film grown on semiconducting GaN(0001)</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>The recent observation of the superconducting state at atomic scale has motivated the pursuit of exotic condensed phases in two-dimensional (2D) systems. Here we report on a superconducting phase in two-monolayer crystalline Ga films epitaxially grown on wide-band-gap semiconductor GaN(0001). This phase exhibits a hexagonal structure and only 0.552 nm in thickness, nevertheless, brings about a superconducting transition temperature Tc as high as 5.4 K, confirmed by in situ scanning tunneling spectroscopy and ex situ electrical magnetotransport and magnetization measurements. The anisotropy of critical magnetic field and Berezinski-Kosterlitz-Thouless-like transition are observed, typical for the 2D superconductivity. Our results demonstrate a novel platform for exploring atomic-scale 2D superconductors, with great potential for understanding the interface superconductivity.</description><subject>Crystal structure</subject><subject>Epitaxial growth</subject><subject>Magnetic fields</subject><subject>Magnetization</subject><subject>Semiconductors</subject><subject>Superconductivity</subject><subject>Transition temperature</subject><subject>Two dimensional</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqFkU9PwzAMxSMEYuPPV5hyHIeOOGmb5IgGDKQJEIJzlXbuVtQ2pWk39u3JtIG4cbL18_Oz5EfICNgEgInrZrV1La5L7DoPwgkwyZg4IkPf6EB6dEyGnkCgGZMDcubcB2MMeKxOyYBHCiIdw5DYW-ww6wpbU5tTQ13fYJvZetF7WC9pszIOaVH7UbexgelsRUuzxXYnX-GXWdralHRmaF6UFV22duOdauqwKv7YzMzTeHf-6oKc5KZ0eHmo5-T9_u5t-hDMn2eP05t5kEUAXcBDzLhiYaRzw4QURoRxlqowVdosRMpUiKnmIIXOcxGFgMJIhEyD0Wkep1qck_Het2ntZ4-uS6rCZViWpkbbuwSkijn374D_pXEsdaQE414a76VZa53_f540bVGZdpsAS3a5JC8-l1dcz30uHoTJPhe_ODrc6NMKF79rP0GIb0HNi4Y</recordid><startdate>20150313</startdate><enddate>20150313</enddate><creator>Zhang, Hui-Min</creator><creator>Sun, Yi</creator><creator>Li, Wei</creator><creator>Peng, Jun-Ping</creator><creator>Song, Can-Li</creator><creator>Xing, Ying</creator><creator>Zhang, Qinghua</creator><creator>Guan, Jiaqi</creator><creator>Li, Zhi</creator><creator>Zhao, Yanfei</creator><creator>Ji, Shuaihua</creator><creator>Wang, Lili</creator><creator>He, Ke</creator><creator>Chen, Xi</creator><creator>Gu, Lin</creator><creator>Ling, Langsheng</creator><creator>Tian, Mingliang</creator><creator>Li, Lian</creator><creator>Xie, X C</creator><creator>Liu, Jianping</creator><creator>Yang, Hui</creator><creator>Xue, Qi-Kun</creator><creator>Wang, Jian</creator><creator>Ma, Xucun</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QQ</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20150313</creationdate><title>Detection of a superconducting phase in a two-atom layer of hexagonal Ga film grown on semiconducting GaN(0001)</title><author>Zhang, Hui-Min ; 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| source | American Physical Society Journals |
| subjects | Crystal structure Epitaxial growth Magnetic fields Magnetization Semiconductors Superconductivity Transition temperature Two dimensional |
| title | Detection of a superconducting phase in a two-atom layer of hexagonal Ga film grown on semiconducting GaN(0001) |
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