J. Phys. Soc. Jpn. 75S (2006) pp. 201-203  |Previous Article| |Next Article|  |Table of Contents|
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Proc. of 5th Int. Symposium on ASR-WYP-2005 – Advances in the Physics and Chemistry of Actinide Compounds –

Surface Impedance Studies of Heavy Fermion Superconductors, PrOs₄Sb₁₂ and UBe₁₃

Hideki Tou, Norihiko Tsugawa, Masahiro Doi, Yuki Nakai and Masafumi Sera

We report the results of RF surface impedance measurements of heavy-fermion superconductors, PrOs₄Sb₁₂ and UBe₁₃. For highly conductive material such as heavy-fermion superconductors, the RF impedance measurements at lowtemperatures provide surface impedance Z_s = R_s + iX_s of the sample. The field dependence of Z_s(H) in PrOs₄Sb₁₂ and UBe₁₃ shows anomalies at 0.4–0.6 H_c2, indicating the anomalous vortex pinning. We report measurements of the H–T phase diagram of PrOs₄Sb₁₂ and UBe₁₃ from the field dependence of Z_s(H).

URL: http://jpsj.ipap.jp/link?JPSJS/75S/201/
DOI: 10.1143/JPSJS.75S.201

References

1. J. Bardeen and M. J. Stephen: Phys. Rev. 140 (1965) A1197[APS].
2. A. Maeda and T. Hanaguri: Supercond. Rev. 3 (1998) 1.
3. A. Maeda et al.: Mater. Sci. Forum 137–139 (1993) 1.
4. M. W. Coffey and J. R. Clem: Phys. Rev. Lett. 67 (1991) 386[APS].
5. Y. Matsuda et al.: Phys. Rev. B 66 (2002) 014527[APS].
6. Y. Tsuchiya et al.: Phys. Rev. B 63 (2001) 184517[APS].
7. K. Takaki et al.: Phys. Rev. B 66 (2002) 184511[APS].
8. A. Shibata et al.: Phys. Rev. B 68 (2003) 060501[APS](R).
9. H. Sugawara et al.: Phys. Rev. B 66 (2002) 220504[APS](R).
10. H. Tou et al.: submitted to Phys. Rev.
11. E. Helfand and N. R. Werthamer: Phys. Rev. 147 (1966) 288[APS].
12. E. D. Bauer et al.: Phys. Rev. B 65 (2002) 100506[APS](R).
13. K. Izawa et al.: Phys. Rev. Lett. 90 (2003) 117001[APS].
14. T. Tayama et al.: J. Phys. Soc. Jpn. 72 (2003) 1515[JPSJ].
15. Y. Haga et al.: J. Phys. Soc. Jpn. 65 (1996) 3646[JPSJ].
16. G. M. Schmiedeshoff et al.: Phys. Rev. B 45 (1992) 10544[APS].
17. G. M. Schmiedeshoff et al.: Phys. Rev. B 48 (1993) 16417[APS].