Abstract Details

New Chapters to a Classic Textbook Problem: The Multiple CDWs of RTe3
Abstract ID	LCLS/SSRL-11
Presenter	Rob  Moore
Presentation Type	LCLS/SSRL Invited Speaker
Full Author List	R. G. Moore (1,2) , V. Brouet (3) , R. He (1,2) , D. H. Lu (1,2) , N. Ru (2) , J. -H. Chu (2) , I. R. Fisher (2) , Z. -X. Shen (1,2)
Affiliations	(1) Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Menlo Park, CA 94025 (2) Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, Stanford, CA 94305 (3) Laboratoire de Physique des Solides, Universite Paris-Sud, Bat 510, UMR 8502 91405 Orsay, France
Category	Materials Science
Abstract	The Fermi surface (FS) evolution across multiple charge density wave (CDW) transitions in RTe3 is investigated using angle-resolved photoemission spectroscopy. Low temperature measurements reveal two incommensurate CDW gaps created by perpendicular nesting vectors. A larger gap (~175 meV) arising from a CDW with c*-qCDW1~0.70(0)c* is in good agreement with the expected trend determined from other members of the bi-layer family of rare earth tritelluride compounds (RTe3). A second, smaller gap (~50 meV) is due to a second CDW with a*-qCDW~0.68(5)a*. The temperature dependence of the FS and the two CDW gaps is examined. Possible CDW interactions and the applicability of the traditional FS nesting scenario are discussed.
Footnotes
Funding Acknowledgement	This work is supported by DOE Office of Science, Division of Materials Science, with contract DE-FG03-01ER45929-A001 and DE-AC02-76SF00515.