Abstract
Single-crystal x-ray diffraction employing synchrotron radiation is used to determine the low-temperature structure (at 16 K) of the charge-density-wave compound . The incommensurate modulation is found to be essentially different from that in , despite structural similarities between their basic structures. The morphology of crystals is discussed, and an alternative interpretation is given for scanning tunneling microscopy observations. Implications are considered for the microscopic origin of this CDW instability.
- Received 6 April 1995
DOI:https://doi.org/10.1103/PhysRevB.52.3892
©1995 American Physical Society