Charge density wave formation in R2Te5 (R=Nd, Sm, and Gd)

TitleCharge density wave formation in R2Te5 (R=Nd, Sm, and Gd)
Publication TypeJournal Article
Year of Publication2008
AuthorsShin KY, Laverock J, Wu YQ, Condron CL, Toney MF, Dugdale SB, Kramer MJ, Fisher IR
Journal TitlePhysical Review B
Volume77
Pages165101
Date PublishedApr
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberISI:000255457500015
KeywordsRARE-EARTH-ELEMENT, RETE3 RE, SM2TE5, SMTE3, temperature
Abstract

The rare earth (R) tellurides R2Te5 have a crystal structure intermediate between that of RTe2 and RTe3, consisting of alternating single and double Te planes sandwiched between RTe block layers. We have successfully grown single crystals of Nd2Te5, Sm2Te5, and Gd2Te5 from a self-flux and we describe here evidence for charge density wave formation in these materials. The superlattice patterns for all three compounds are relatively complex, consisting at room temperature of at least two independent wave vectors. Consideration of the electronic structure indicates that, to a large extent, these wave vectors are separately associated with sheets of the Fermi surface which are principally derived from the single and double Te layers.

DOI10.1103/PhysRevB.77.165101
Alternate JournalPhys. Rev. B