Poster: Structural studies of beta-pyrochlore RbOs2O6

Authors: G. Schuck, J. Karpinski, N. D. Zhigadlo, and S. M. Kazakov



Conference: 2006 Swiss Physical Society - MaNEP meeting, Lausanne, Switzerland, February 13-14, 2006 , PDF



Abstract:

2006_manep_poster_a4.jpg

The discovery of superconductivity in beta-pyrochlore oxides AOs2O6 (A = Cs, Rb and K, [1]) has recently attracted considerable interest. We have studied the structural properties of the new superconducting beta-pyrochlore RbOs2O6, at room temperature, by single crystal X-ray diffraction to elucidate the effect of geometrical frustration in this compound. The RbOs2O6 crystals have metallic conductivity and show a sharp transition to the superconducting state at TC = 6.3 K. We show that reflections witch are forbidden in the ideal pyrochlore space group symmetry Fd[overline 3]m must be taken into consideration for the RbOs2O6 compound. We also present details of the crystallographic analysis of RbOs2O6 in order to understand the structural relationships of this compound to superconducting beta-pyrochlore KOs2O6 and alpha-pyrochlore Cd2Re2O7 [2,3].

  1. S. Yonezawa, Y. Muraoka, Y. Matsushita and Z. Hiroi, J. Phys.: Condens. Matter 16 (2004) L9
  2. G. Schuck, S. M. Kazakov, K. Rogacki, N. D. Zhigadlo and J. Karpinski, PHYSICAL REVIEW B 73 (2006) 144506
  3. M. T. Weller, R. W. Hughes, J. Rooke, C. S. Knee and J. Reading, Dalton Transactions, 19 (2004) 3032

This entry was posted on Wednesday, February 21st, 2007 at 5:23 pm and is filed under Pyrochlore, Scientific posters.