Magnetic and superconducting behaviours of doped and undoped double perovskite Ba2PrRuO6

S. M. Rao, M. K. Wu, J. K. Srivastava*, B. H. Mok, C. Y. Lu, Y. C. Liao, Y. Y. Hsu, Y. S. Hsiue, Y. Y. Chen, S. Neeleshwar, S. Tsai, J. C. Ho, H. L. Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Our detailed measurements show the undoped double perovskite Ba 2+2Pr3+Ru5+O2- 6 to be a nonmetallic (insulating) spin glass (SG) and the ∼5-10% Cu-doped (i.e., Cu-concentration/(Cu+Ru-concentration) ∼5-10%) system to be a spin glass superconductor (SGSC), though the critical temperature, Tc, (∼8-11 K) and the superconducting volume fraction, fsc, (∼1-4%) are small. This smallness is presumably due to the presence of a large number of pair breaking spins and small carrier concentration in the lattice. Results and their implications are discussed.

Original languageEnglish
Pages (from-to)71-81
Number of pages11
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume324
Issue number1
DOIs
Publication statusPublished - 2004 Apr 5

Keywords

  • 74.25.Ha
  • 74.72.-h
  • 74.72.Yg
  • 75.50.Lk
  • Cuproruthenate
  • Double perovskite
  • Frustration
  • High- T superconductivity
  • Magnetic superconductor
  • Spin glass

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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