Crypto-superconductivity in RuSr2GdCu2O8

Y. Y. Xue, S. Tsui, J. Cmaidalka, R. L. Meng, B. Lorenz, C. W. Chu

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The susceptibility x = x′ + ix″ of RuSr2GdCu2O8 powders at 2 K has been deduced from ac and dc magnetizations with their particle size d from 800 to 10 μm and grain size 1-5 μm. It is observed that the loss part, x″, scales with d over a field range of 0.0001 to 100 Oe, suggesting that the supercurrent is homogeneously distributed over particles as small as 10 μm. However, the inductance part, x′, decreases with d systematically and drastically. An effective penetration depth as large as 30-50 μm is needed, which suggests a very small super-carrier concentration. Crypto-superconductivity is proposed to accommodate the data.

Original languageEnglish
Pages (from-to)483-484
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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