Phys. Rev. Lett. 99, 046401 (2007) [4 pages]STM Studies of TbTe3: Evidence for a Fully Incommensurate Charge Density WaveReceived 19 January 2007; published 23 July 2007 We observe unidirectional charge density wave (CDW) ordering on the quasi-2D material TbTe3 with a scanning tunneling microscope at ∼6 K. Our analysis indicates that the CDW is fully incommensurate, with wave vector qCDW≈0.71×2π/c. By imaging at various tip-sample voltages, we highlight effects of the subsurface layer and its effect on the CDW. We also observe an additional (possibly surface) dimerization and ≈0.68×2π/a ordering perpendicular to the CDW. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.046401
DOI:
10.1103/PhysRevLett.99.046401
PACS:
71.45.Lr, 61.44.Fw, 68.37.Ef
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