Abstract
In the vicinity of a nonmagnetic impurity locally, a charge-density wave is formed (Friedel oscillation). The pinning of a linearly polarized spin-density wave by an impurity is due to the mismatches of the charge and spin oscillations. For comparison it is shown that for an intermediate-strength impurity the ratio of the pinning energies of a spin-density wave and of a charge-density wave with the same gap is larger than which is well beyond any previous estimation. The experimental consequences are also discussed.
- Received 10 December 1987
DOI:https://doi.org/10.1103/PhysRevLett.60.1442
©1988 American Physical Society