A versatile fabrication method for cluster superlattices

N'Diaye A, Gerber T, Busse C, Mysliveček J, Coraux J, Michely T

Research article (journal)

Abstract

On the graphene moiré on Ir(111) a variety of highly perfect cluster superlattices can be grown as shown for Ir, Pt, W and Re. Even materials that do not form cluster superlattices upon room temperature deposition may be grown into such by low-temperature deposition or the application of cluster seeding through Ir as shown for Au, AuIr and FeIr. Criteria for the suitability of a material to form a superlattice are given and largely confirmed. It is proven that at least Pt and Ir form epitaxial cluster superlattices. The temperature stability of the cluster superlattices is investigated and understood on the basis of positional fluctuations of the clusters around their sites of minimum potential energy. The binding sites of Ir, Pt, W and Re cluster superlattices are determined and the ability to cover samples macroscopically with a variety of superlattices is demonstrated.

Details zur Publikation

Release year: 2009
Language in which the publication is written: English
Link to the full text: http://www.scopus.com/inward/record.url?eid=2-s2.0-72149104730&partnerID=40&md5=0694cdb3960ca2ef0a5232fd04e9a412