Synthesis of Superconducting $SrPd_2Ge_2$ Single Crystals

$SrPd_2Ge_2$ 초전도 단결정 합성

  • Sung, Nak-Heon (Dept. of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Kang, B.Y. (Dept. of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Cho, B.K. (Dept. of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST))
  • Received : 2010.03.05
  • Accepted : 2010.03.24
  • Published : 2010.04.30

Abstract

$SrPd_2Ge_2$ single crystals were grown by self-flux method. Several shiny plate-like single crystals were obtained. The crystal structure and lattice parameters were characterized using the x-ray diffractometor, which indicates the crystals are in a single phase of $ThCr_2Si_2$-type. We confirmed superconducting transition temperature at 2.7 K by measuring magnetization and electrical resistivity.

Keywords

References

  1. N. D. Mathur, F. M. Grosche, S. R. Julian, I. R. Walker, D. M. Freye, R. K. W. Haselwimmer & G. G. Lonzarich, "Magnetically mediated superconductivity in heavy fermion compounds", Nature 394, 39 (1998). https://doi.org/10.1038/27838
  2. O. Trovarelli, C. Geibel, S. Mederle, C. Langhammer, F. M. Grosche, P. Gegenwart, M. Lang, G. Sparn, and F. Steglich, "$YbRh_2Si_2$: Pronounced Non-Fermi-Liquid Effects above a Low-Lying Magnetic Phase Transition", Phys. Rev. Lett. 85, 626-629 (2000). https://doi.org/10.1103/PhysRevLett.85.626
  3. Marianne Rotter, Marcus Tegel, and Dirk Johrendt, "Superconductivity at 38 K in the Iron Arsenide $(Ba_{1-x}K_x)Fe_2As_2$", Phys. Rev. Lett. 101, 107006 (2008). https://doi.org/10.1103/PhysRevLett.101.107006
  4. N. Berry, C. Capan, G. Seyfarth, A. D. Bianchi, J. Ziller, and Z. Fisk, "Superconductivity without Fe or Ni in the phosphides $BaIr_2P_2$ and $BaRh_2P_2$", Phys. Rev. B 79, 180502(R) (2009). https://doi.org/10.1103/PhysRevB.79.180502
  5. H. Fujii, and A. Sato, "Superconductivity in $SrPd_2Ge_2$", Phys. Rev. B 79, 224522 (2009). https://doi.org/10.1103/PhysRevB.79.224522
  6. G. W. Hull, J. H. Wernick, T. H. Geballe, J. V. Waszczak, and J. E. Bernardini, "Superconductivity in the ternary intermetallics $YbPd_2Ge_2,\;LaPd_2Ge_2$, and $LaPt_2Ge_2$", Phys. Rev. B 24, 6715-6718 (1981). https://doi.org/10.1103/PhysRevB.24.6715
  7. H. Fujii, A. Sato, "Crystal structure of ternary germanides $SrM_2Ge_2$ (M=Ni and Ir)", J. Alloy. Compd., 487, 198-201 (2009). https://doi.org/10.1016/j.jallcom.2009.08.050