Superconductivity in (La1-xCex)(O0.9F0.1)FeAs and (La1-xPbx)OFeAs
Here we report the synthesis and superconductivity of (La$_{1-x}$Cex)(O0.9F0.1)FeAs and (La$_{1-x}$Pbx)OFeAs, which were prepared via partially substituting the trivalent La with either Ce in LaO0.9F0.1FeAs or Pb in LaOFeAs, respectively. Influence of the doping level x on the superconducting transi...
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Published in | Europhysics letters Vol. 83; no. 6; pp. 66005 - 66005(6) |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.09.2008
EDP Sciences |
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Abstract | Here we report the synthesis and superconductivity of (La$_{1-x}$Cex)(O0.9F0.1)FeAs and (La$_{1-x}$Pbx)OFeAs, which were prepared via partially substituting the trivalent La with either Ce in LaO0.9F0.1FeAs or Pb in LaOFeAs, respectively. Influence of the doping level x on the superconducting transition temperatures (Tc) is investigated in correlation with the dopant fraction values in these two sets of superconductors. The accurate existence of the doped Ce or Pb cations inside the typical samples is confirmed by means of electron energy loss spectroscopy (EELS) and energy dispersive X-ray spectroscopy (EDX) measurements. Structural analysis reveals that the increase of Ce content in the samples leads to a systematic shrinkage of the crystal lattice parameters. The observation of superconductivity in (La$_{1-x}$Pbx)OFeAs without F doping indicates a new method for the introduction of charge carriers in this system. |
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AbstractList | Here we report the synthesis and superconductivity of (La1-xCex)(O0.9F0.1)FeAs and (La1-xPbx)OFeAs, which were prepared via partially substituting the trivalent La with either Ce in LaO0.9F0.1AFeAs or Pb in LaOFeAs, respectively. Influence of the doping level x on the superconducting transition temperatures (Tc) is investigated in correlation with the dopant fraction values in these two sets of superconductors. The accurate existence of the doped Ce or Pb cations inside the typical samples is confirmed by means of electron energy loss spectroscopy (EELS) and energy dispersive X-ray spectroscopy (EDX) measurements. Structural analysis reveals that the increase of Ce content in the samples leads to a systematic shrinkage of the crystal lattice parameters. The observation of superconductivity in (Lai,Pbx)0FeAs without F doping indicates a new method for the introduction of charge carriers in this system. Here we report the synthesis and superconductivity of (La$_{1-x}$Cex)(O0.9F0.1)FeAs and (La$_{1-x}$Pbx)OFeAs, which were prepared via partially substituting the trivalent La with either Ce in LaO0.9F0.1FeAs or Pb in LaOFeAs, respectively. Influence of the doping level x on the superconducting transition temperatures (Tc) is investigated in correlation with the dopant fraction values in these two sets of superconductors. The accurate existence of the doped Ce or Pb cations inside the typical samples is confirmed by means of electron energy loss spectroscopy (EELS) and energy dispersive X-ray spectroscopy (EDX) measurements. Structural analysis reveals that the increase of Ce content in the samples leads to a systematic shrinkage of the crystal lattice parameters. The observation of superconductivity in (La$_{1-x}$Pbx)OFeAs without F doping indicates a new method for the introduction of charge carriers in this system. |
Author | Yang, H. X Ma, C Chen, Z Wang, L Li, J. Q Che, R. C Shi, H. L Liang, C. Y Lu, J. B |
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CitedBy_id | crossref_primary_10_1080_01411594_2013_797980 crossref_primary_10_1103_PhysRevB_107_045145 crossref_primary_10_1080_01411594_2012_658575 crossref_primary_10_1088_0953_2048_22_2_025004 crossref_primary_10_1080_01411594_2012_669479 crossref_primary_10_1080_01411594_2017_1337906 crossref_primary_10_4236_wjcmp_2015_53016 crossref_primary_10_1088_0953_2048_23_7_073001 crossref_primary_10_1002_adma_200901049 |
Cites_doi | 10.1209/0295-5075/82/17009 10.1209/0295-5075/83/17002 10.1021/ja063355c 10.1038/nature06972 10.1021/ic701200e 10.1016/S0968-4328(99)00139-0 10.1088/0953-2048/20/7/017 10.1007/s11433-008-0075-9 10.1103/PhysRevB.77.184518 10.1021/ja800073m 10.1103/PhysRevLett.100.247002 10.1038/nature07045 |
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References | 11 Liang C. Y. (13) 2007; 20 15 16 Kuroki K. Onari S. Arita R. Usui H. Tanaka Y. Kontani H. Aoki H. (9) 2008 Sefat A. S. McGuire M. A. Sales B. C. Jin R. Y. Howe J. Y. Mandrus D. (7) 2008 Ren Z. A. (12) 2008; 83 Wen H. H. (5) 2008; 82 Nomura T. Kim S. Kamihara Y. Hirano M. Sushko P. V. Kato K. Takata M. Shluger A. L. Hosono H. (14) 2008 1 2 3 4 6 Khasanov R. Shengelaya A. Maisuradze A. Di Castro D. Savi'c I. M. (8) 2008 10 |
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Snippet | Here we report the synthesis and superconductivity of (La$_{1-x}$Cex)(O0.9F0.1)FeAs and (La$_{1-x}$Pbx)OFeAs, which were prepared via partially substituting... Here we report the synthesis and superconductivity of (La1-xCex)(O0.9F0.1)FeAs and (La1-xPbx)OFeAs, which were prepared via partially substituting the... |
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Title | Superconductivity in (La1-xCex)(O0.9F0.1)FeAs and (La1-xPbx)OFeAs |
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