Fermi surface evolution across multiple charge density wave transitions in ErTe3

R. G. Moore, V. Brouet, R. He, D. H. Lu, N. Ru, J. H. Chu, I. R. Fisher, Z. X. Shen

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80 Scopus citations

Abstract

The Fermi surface (FS) of ErTe3 is investigated using angle-resolved photoemission spectroscopy. Low-temperature measurements reveal two incommensurate charge-density wave (CDW) gaps created by perpendicular FS nesting vectors. A large Δ1 =175meV gap arising from a CDW with c - - qCDW1 ∼0.70 (0) c- is in good agreement with the expected value. A second, smaller Δ2 =50meV gap is due to a second CDW with a- - qCDW2 ∼0.68 (5) a-. The temperature dependence of the FS, the two gaps, and possible interaction between the CDWs are examined.

Original languageEnglish
Article number073102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number7
DOIs
StatePublished - Feb 2 2010
Externally publishedYes

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