The commensurability-induced phason gap in the long period commensurate phases of (N(CH3)4)2ZnCl4
- 10 February 1988
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 21 (4) , 705-713
- https://doi.org/10.1088/0022-3719/21/4/008
Abstract
The phason energy gap has been observed in the incommensurate and commensurate phases in the 'devil's staircase' compound (N(CH3)4)2ZnCl4. The gap was determined via the phason-induced 14N spin-lattice relaxation contribution. In the commensurate phases the gap is commensurability induced whereas in the incommensurate phase it is induced by defects. The commensurability-induced gap varies with the size of the commensurate unit cell as predicted by the theory of Levanyuk.Keywords
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