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X-RAY AND TRANSPORT STUDIES OF RUTHENIUM-IRIDIUM BICRYSTAL SUPERLATTICES

Published online by Cambridge University Press:  28 February 2011

ROY CLARKE ,
F. LAMELAS ,
C. UHER ,
J.E. CUNNINGHAM  and
C.P. FLYNN
ROY CLARKE
Affiliation:
The University of Michigan, Ann Arbor, MI 48109
F. LAMELAS
Affiliation:
The University of Michigan, Ann Arbor, MI 48109
C. UHER
Affiliation:
The University of Michigan, Ann Arbor, MI 48109
J.E. CUNNINGHAM
Affiliation:
University of Illinois at Champaign-Urbana, Urbana, IL 61801
C.P. FLYNN
Affiliation:
University of Illinois at Champaign-Urbana, Urbana, IL 61801
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Abstract

The stacking structure and epitaxial ordering are studied in MBE-grown Ru-Ir superlattices of wavelengths λ = 41\ and 62\. These samples span the fcc-hcp crossover previously found to occur when the Ir component is thinner than about 10 monolayers. Evidence for a new stacking sequence of period 3λ is found in the λ=41\ sample, possibly resulting from stacking faults in the Ir layers. The superconducting transition temperature is significantly higher in the 41\ sample (Tc=0.19K) than in the 62\ sample (Tc=0.15K).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 56: Symposium H – Layered Structures and Epitaxy , 1985 , 205
Copyright
Copyright © Materials Research Society 1986

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