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arXiv · 0809.2832

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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Abstract

The Fermi surface (FS) of ErTe3 is investigated using angle-resolved photoemission spectroscopy (ARPES). Low temperature measurements reveal two incommensurate charge density wave (CDW) gaps created by perpendicular FS nesting vectors. A large Delta_1 = 175 meV gap arising from a CDW with c* - q_CDW1 ~ 0.70(0) c* is in good agreement with the expected value. A second, smaller Delta_2 = 50 meV gap is due to a second CDW with a* - q_CDW2 ~ 0.68(5) a*. The temperature dependence of the FS, the two gaps and possible interaction between the CDWs are examined.

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R. G. Moore, V. Brouet, R. He, D. H. Lu, N. Ru, J. -H. Chu, I. R. Fisher, Z. -X. Shen. 2008-09-17. Fermi Surface Evolution Across Multiple Charge Density Wave Transitions in ErTe3. https://arxiv.org/abs/0809.2832

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