Superconducting (Rb,Ba)BiO3 thin films grown by molecular beam epitaxy

E. S. Hellman*, E. H. Hartford, T. T.M. Palstra

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)
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Abstract

The simple cubic perovskite (Rb,Ba)BiO3 can be grown by molecular beam epitaxy using an RF plasma oxygen source. Films with superconducting onsets in resistivity as high as 27K are obtained without annealing. The epitaxy proceeds in the normal (1 0 0) orientation on (1 0 0) SrTiO3, despite a 10% lattice mis-match. (1 1 0) epitaxy is obtained on (1 0 0) MgO substrates, despite the good lattice match for (1 0 0) growth. The films with the lowest normal state resistivity are those grown on SrTiO3 at 300±10°C and are Bi deficient despite excess Bi flux during growth. The temperature dependence of the resistivity for these films is metallic down to Tc. Hc2 for a Tc=20K film is 10±T.

Original languageEnglish
Pages (from-to)633-634
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume162-164
Issue numberPART 1
DOIs
Publication statusPublished - 1 Jan 1989
Externally publishedYes

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