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High Pressure Low Temperature Studies on 1-2-2 Iron-based Superconductors Using Designer Diamond Cells

Published online by Cambridge University Press:  05 August 2013

Walter O. Uhoya
Affiliation:
Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA
Georgiy M. Tsoi
Affiliation:
Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA
Yogesh K. Vohra
Affiliation:
Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA
Jonathan, E. Mitchell
Affiliation:
Materials Science & Technology Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
Athena Safa-Sefat
Affiliation:
Materials Science & Technology Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
Samuel Weir
Affiliation:
Mail Stop L-041, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA
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Abstract

High pressure low temperature electrical resistance measurements were carried out on a series of 122 iron-based superconductors using a designer diamond anvil cell. These studies were complemented by image plate x-ray diffraction measurements under high pressures and low temperatures at beamline 16-BM-D, HPCAT, Advanced Photon Source. A common feature of the 1-2-2 iron-based materials is the observation of anomalous compressibility effects under pressure and a Tetragonal (T) to Collapsed Tetragonal (CT) phase transition under high pressures. Specific studies on antiferromagnetic spin-density-wave Ba0.5Sr0.5Fe2As2 and Ba(Fe0.9Ru0.1)2As2 samples are presented to 10 K and 41 GPa. The collapsed tetragonal phase was observed at a pressure of 14 GPa in Ba0.5Sr0.5Fe2As2 at ambient temperature. The highest superconducting transition temperature in Ba0.5Sr0.5Fe2As2 was observed to be at 32 K at a pressure of 4.7 GPa. The superconductivity was observed to be suppressed on transformation to the CT phase in 122 materials.

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Articles
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Takahashi, H, Igawa, K, Arii, K, Kamihara, Y, Hirano, H and Hosono, H 2008 Nature.453, 376.CrossRefGoogle Scholar
Rotter, M, Tegel, M and Johrendt, D 2008 Phys. Rev.lett.101, 107006.CrossRefGoogle Scholar
Uhoya, W, Stemshorn, A, Tsoi, G, Vohra, Y K, Sefat, A S, Sales, B C, Hope, K M and Weir, S T 2010 Phys. Rev. B 82 144118 CrossRefGoogle Scholar
Mittal, R, Mishra, S K, Chaplot, S L, Ovsyannikov, S V, Greenberg, E, Trots, D M, Dubronvinsky, L, Su, Y, Brueckel, T, Matsuishi, S, Hosono, H and Garbarino, G 2011 Phys. Rev. B 83 054503 CrossRefGoogle Scholar
Colonna, N, Profeta, G, Continenza, A, and Massidda, S 2011 Phys. Rev. B 83, 094529.CrossRefGoogle Scholar
Mitchell, J E, Saparov, B, Lin, W, Calder, S, Li, Q, Kalinin, S V, Pan, M, Christianson, A D, Sefat, A S, Phys. Rev. B 86 174511.Google Scholar
Sharma, S, Bharathi, A, Chandra, S, Reddy, V R, Paulraj, S, Satya, A T, Sastry, V S, Gupta, A, Sundar, C S, Phys Rev B 81 174512.Google Scholar
Sefat, A S, Singh, D J, VanBebber, L H, Mozharivskyj, Y, McGuire, M A, Jin, R Y, Sales, B C, Keppens, V and Mandrus, D 2009 Phys. Rev. B 79 224524 CrossRefGoogle Scholar
Velisavljevic, N and Vohra, Y K 2004 High Press. Res. 24 295 CrossRefGoogle Scholar
Birch, F 1947 Phys. Rev. 71 809 CrossRefGoogle Scholar
Hammersley, A P 1995 Report No. EXP/AH/95–01 Google Scholar
Toby, B H 2001 J. Appl. Crystallogr. 34 210–3CrossRefGoogle Scholar
Bishop, M, Uhoya, W, Tsoi, G, Vohra, Y K, Sefat, A S and Sales, B 2010 J. Phys.: Condens. Matter 22 425701 Google Scholar
Kim, S K, Torikachvili, M S, Colombier, E, Thaler, A, Bud’ko, S L and Canfield, P C, 2011 Phys. Rev. B 84 134525 CrossRefGoogle Scholar
Tsoi, G M, Malone, W, Uhoya, W, Mitchell, J E, Vohra, Y K, Wenger, L E, Sefat, A.S. and Weir, S T 2012 J. Phys.: Condens. Matter 24, 495702.Google Scholar