| Phase transition and superconductivity of SrFe(2)As(2) under high pressure. | |
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MedLine Citation:
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PMID: 21389565 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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High pressure x-ray diffraction and electrical resistance measurements have been carried out on SrFe(2)As(2) to a pressure of 23 GPa and temperature of 10 K using a synchrotron source and designer diamond anvils. At ambient temperature, a phase transition from the tetragonal phase to a collapsed tetragonal (CT) phase is observed at 10 GPa under non-hydrostatic conditions. The experimental relation that T-CT transition pressure for 122 Fe-based superconductors is dependent on ambient pressure volume is affirmed. The superconducting transition temperature is observed at 32 K at 1.3 GPa and decreases rapidly with a further increase of pressure in the region where the T-CT transition occurs. Our results suggest that T(C) falls below 10 K in the pressure range of 10-18 GPa where the CT phase is expected to be stable. |
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Authors:
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Walter O Uhoya; Jeffrey M Montgomery; Georgiy M Tsoi; Yogesh K Vohra; M A McGuire; Athena S Sefat; Brian C Sales; Samuel T Weir |
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Publication Detail:
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Type: Journal Article Date: 2011-03-10 |
Journal Detail:
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Title: Journal of physics. Condensed matter : an Institute of Physics journal Volume: 23 ISSN: 0953-8984 ISO Abbreviation: J Phys Condens Matter Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-03-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101165248 Medline TA: J Phys Condens Matter Country: England |
Other Details:
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Languages: eng Pagination: 122201 Citation Subset: IM |
Affiliation:
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Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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