Electrodynamic response of Sr2 RuO4

R. J. Ormeno, M. A. Hein, T. L. Barraclough, A. Sibley, C. E. Gough, Zhiqiang Mao, S. Nishizaki, Y. Maeno

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The surface impedance Zs = Rs +i Xs of a number of Sr2 RuO4 crystals has been measured in the frequency range f∼2-15 GHz using a dielectric resonator technique. Zs conforms to the classical skin effect only above 20 K, because the quasiparticle relaxation rate 1 τ approaches 2πf at lower temperatures. Below Tc, Rs decreases while Xs initially increases and peaks at a frequency-dependent temperature. The microwave properties are quite unlike those of conventional and high- Tc superconductors and imply a finite quasiparticle fraction at T=0 with a temperature-independent relaxation time throughout the superconducting state.

Original languageEnglish (US)
Article number092504
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
StatePublished - Oct 6 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Ormeno, R. J., Hein, M. A., Barraclough, T. L., Sibley, A., Gough, C. E., Mao, Z., Nishizaki, S., & Maeno, Y. (2006). Electrodynamic response of Sr2 RuO4. Physical Review B - Condensed Matter and Materials Physics, 74(9), [092504]. https://doi.org/10.1103/PhysRevB.74.092504