Source:http://linkedlifedata.com/resource/pubmed/id/19518747
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
16
|
| pubmed:dateCreated |
2009-6-12
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| pubmed:abstractText |
We use angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of CaFe2As2-parent compound of a pnictide superconductor. We find that the structural and magnetic transition is accompanied by a three- to two-dimensional (3D-2D) crossover in the electronic structure. Above the transition temperature (T_{s}) Fermi surfaces around Gamma and X points are cylindrical and quasi 2D. Below T_{s}, the Gamma pocket forms a 3D ellipsoid, while the X pocket remains quasi 2D. This finding strongly suggests that low dimensionality plays an important role in understanding the superconducting mechanism in pnictides.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Apr
|
| pubmed:issn |
0031-9007
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| pubmed:author |
pubmed-author:BostwickAA,
pubmed-author:Bud'koS LSL,
pubmed-author:CanfieldP CPC,
pubmed-author:KaminskiAA,
pubmed-author:KhasanovRR,
pubmed-author:KondoTakeshiT,
pubmed-author:LiuChangC,
pubmed-author:PalczewskiA DAD,
pubmed-author:RotenbergEE,
pubmed-author:SamolyukG DGD,
pubmed-author:ShiMM,
pubmed-author:XXX
|
| pubmed:issnType |
Print
|
| pubmed:day |
24
|
| pubmed:volume |
102
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
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| pubmed:pagination |
167004
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| pubmed:year |
2009
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| pubmed:articleTitle |
Three- to two-dimensional transition of the electronic structure in CaFe2As2: a parent compound for an iron arsenic high-temperature superconductor.
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| pubmed:affiliation |
Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
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| pubmed:publicationType |
Journal Article
|