Journal
EPL
Volume 95, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/95/67002
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Funding
- National '973' Program [2011CBA00105]
- National Natural Science Foundation of China [51002150, 51025726]
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Large single crystals of La-doped CaFe2As2 were successfully synthesized by the FeAs self-flux method. The X-ray diffraction patterns suggest high crystalline quality and c-axis orientation. By substitution of trivalent La3+ ions for divalent Ca2+, the resistivity anomaly in the parent compound CaFe2As2 is completely suppressed and the superconducting transition temperature reaches the value of 42.7 K, which is higher than that of about 30 K reported in SAHA S. R. et al., arXiv:1105.4798v1. The upper critical field has been determined with the magnetic field along the ab-plane and c-axis, yielding an anisotropy of about 3.3. Copyright (C) EPLA, 2011
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