Critical current measurements on thin films of CeRu2

Groten, D. ; Ramakrishnan, S. ; Becker, B. ; Nieuwenhuys, G. J. ; Mydosh, J. A. ; Aarts, J. (1997) Critical current measurements on thin films of CeRu2 Physica B: Condensed Matter, 230-232 . pp. 377-379. ISSN 0921-4526

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We have deposited thin films of CeRu2 onto SiO2/Si substrates by means of DC magnetron sputtering from a CeRu2 target. Resistivity data show a sharp superconducting transition at a maximum Tc of 5.2 K with a typical width of 0.2 K. The critical current in the superconducting mixed state jc shows high values at low fields, indicative of pinning of flux lines at grain boundaries. However, above reduced fields h = H/Hc2 ≈ 0.3, jc starts to drop, with an anomaly around h ≅ 0.7, but without showing a peak near the upper critical field. Flux pinning appears to be very weak over an appreciable field range, which is possibly due to the high spin susceptibility of CeRu2.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:CeRu2; Superconductivity; Critical Current; Thin Film
ID Code:68519
Deposited On:02 Nov 2011 11:33
Last Modified:02 Nov 2011 11:33

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