Source:http://linkedlifedata.com/resource/pubmed/id/21770538
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
23
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| pubmed:dateCreated |
2011-7-20
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| pubmed:abstractText |
LaCo(2)B(2) with a ThCr(2)Si(2)-type (so-called "122") structure composed of alternately stacked La and CoB layers exhibits metallic electrical conductivity and Pauli paramagnetic behavior down to 2 K. Bulk superconductivity with a T(c) of ?4??K emerges upon substituting with dopant elements, i.e., isovalent substitution to form (La(1-x)Y(x))Co(2)B(2), or aliovalent substitution to form La(Co(1-x)Fe(x))(2)B(2). According to the density functional theory calculations, highly covalent bonding between Co 3d dominating the Fermi level and B 2p levels deeper than the Fermi level removes magnetic ordering from Co 3d electrons even in the undoped samples. This is a first Co-based superconductor among the 122-type family.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jun
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| pubmed:issn |
1079-7114
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
10
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| pubmed:volume |
106
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
237001
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| pubmed:year |
2011
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| pubmed:articleTitle |
LaCo2B2: a Co-based layered superconductor with a ThCr2Si2-type structure.
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| pubmed:affiliation |
Frontier Research Center, Tokyo Institute of Technology, Midori-ku, Yokohama, Japan.
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| pubmed:publicationType |
Journal Article
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