Broken Hexagonal Symmetry in the Incommensurate Charge-Density Wave Structure of-Ta
- 18 August 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 45 (7) , 576-579
- https://doi.org/10.1103/physrevlett.45.576
Abstract
High-resolution x-ray scattering studies show a new charge-density wave (CDW) structure on warming through the commensurate-incommensurate transition in -Ta at 93 K. In contrast to the fully incommensurate CDW structure seen on cooling, hexagonal symmetry is broken in the new phase and the triple- CDW has one commensurate and two incommensurate wave vectors. At 112 K (warming) the CDW transforms to the fully incommensurate structure.
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