Abstract
It is shown that, for transition-metal trichalcogenides Nb, for Ta both with a monoclinic and an orthorhombic unit cell, and for transition-metal tetrachalcogenide I, compounds which exhibit transport properties associated with charge-density-wave motion, the linear relationship between the current carried by the charge-density wave and the fundamental frequency of the ac voltage detected in the nonlinear state leads to a pinning potential periodicity which is half the charge-density-wave wavelength in agreement with the recent theory of Josephson oscillations of Barnes and Zawadowski.
- Received 4 April 1983
DOI:https://doi.org/10.1103/PhysRevB.28.1646
©1983 American Physical Society