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Theoretical Study of the Interplay of Superconductivity and Magnetism in FeAs Based Superconductors

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DOI: 10.4236/wjcmp.2014.42008    3,059 Downloads   4,900 Views   Citations

ABSTRACT

The interaction of superconductivity and magnetism is studied in iron based superconductor using the Hamiltonian consisting of the itinerant electrons, localized electrons moment, and s-f interaction. Using Greens function technique and equation of motion method, we have obtained an expressions for superconducting order parameters (△(T), △(0)) and critical temperature TC, which reduce to BCS result in the absence of magnetic interactions. The result of the calculations shows that superconductivity can coexist with magnetism in iron based superconductor below the critical temperature.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Afrassa, M. and Singh, P. (2014) Theoretical Study of the Interplay of Superconductivity and Magnetism in FeAs Based Superconductors. World Journal of Condensed Matter Physics, 4, 53-57. doi: 10.4236/wjcmp.2014.42008.

References

[1] Kamihara, Y., Watanabe, T., Hirano, M. and Hosono, H. (2008) Iron-Based Layered Superconductor La[O1-xFx] FeAs (x = 0.05–0.12) with Tc = 26 K. Journal of the American Chemical Society, 130, 3296-3297.
http://dx.doi.org/10.1021/ja800073m
[2] Lumsden, M.D. and Christianson, A.D. (2010) Magnetism in Fe-Based Superconductors. Condensed Matter Physics, 22, Article ID: 203203.
[3] Dai, P.C., Hu, J.P. and Dagotto, E. (2012) Magnetism and Its Microscopic Origin in Iron-Based High-Temperature Superconductors. http://arxiv.org/abs/1209.0381v1
[4] Ruebenbauer, K., Zukrowski, J., Bukowski, Z., Matusiak, M. and Karpinski, J. (2012) Interplay between Spin Density Wave and Superconductivity in “122” Iron Pnictides: 57Fe MOssbauer Study. Acta Physica Polonica A, 121, 726-729.
[5] Vorontsov, A.B., Vavilov, M. G. and Chubukov, A.V. (2009) Interplay between Magnetism and Superconductivity in Fe-Pnictides. Physical Review B, 79, Article ID: 060508 (R).
http://dx.doi.org/10.1103/PhysRevB.79.060508
[6] Rotter, M., et al. (2009) Competition of Magnetism and Superconductivity in under Doped (Ba1-xKx) Fe2As2. New Journal of Physics, 11, Article ID: 025014.
http://dx.doi.org/10.1088/1367-2630/11/2/025014
[7] Zhao, J., et al. (2008) Structural and Magnetic Phase Diagram of CeFeAsO1-xFx and Its Relation to High-Temperature Superconductivity. Nature Materials, 7, 953-959.
http://dx.doi.org/10.1038/nmat2315
[8] Blachowski, A., et al. (2011) Coexistence of Superconductivity and Magnetism Theoretical Predictions and Experimental Result. Physical Review B, 84, Article ID: 174503.
http://dx.doi.org/10.1080/00018738500101741
[9] Nandi, N.S., et al. (2010) Anomalous Suppression of the Orthorhombic Lattice Distortion in Superconducting Ba (Fe1xCox) (2) As-2 Single Crystals. Physical Review Letters, 104, Article ID: 057006.
http://dx.doi.org/10.1103/PhysRevLett.104.057006
[10] Han, F., Zhu, X.Y., Cheng, P., et al. (2009) Superconductivity and Phase Diagrams of the 4d-and 5d-Metal-Doped Iron Arsenides SrFe2-xMxAs2 (M=Rh,Ir,Pd). Physical Review B, 80, Article ID: 024506.
http://dx.doi.org/10.1007/s11433-009-0302-z
[11] Chen, H., et al. (2009) Coexistence of the Spin-Density Wave and Superconductivity in Ba1-xKxFe2As2. Europhysics Letters, 85, Article ID: 17006.
http://dx.doi.org/10.1209/0295-5075/85/17006
[12] William, D.B. (2009) Fundamentals of Many-Body Physics Principles and Methods. Springer-Verlag, Berlin Heidelberg.

  
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