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 language | English |
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Article number | 073102 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 81 |
Issue number | 7 |
DOIs | |
State | Published - Feb 2 2010 |
Externally published | Yes |