Difference between revisions of "Incommensurate modulated structure"
From Online Dictionary of Crystallography
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<Font color="blue">Structure modulée incommensurable </font>(Fr.) | <Font color="blue">Structure modulée incommensurable </font>(Fr.) | ||
| − | + | == Definition == | |
An ''incommensurate modulated crystal structure'' is a [[modulated crystal structure]], for which | An ''incommensurate modulated crystal structure'' is a [[modulated crystal structure]], for which | ||
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wave vectors of the modulation with respect to the basis structure should be irrational. | wave vectors of the modulation with respect to the basis structure should be irrational. | ||
| − | + | == See also == | |
| + | [[Quasiperiodicity]] | ||
Revision as of 15:21, 30 June 2010
Incommensurate modulated structure
Structure modulée incommensurable (Fr.)
Definition
An incommensurate modulated crystal structure is a modulated crystal structure, for which the modulation function has a Fourier transform of sharp peaks at wave vectors that cannot all be expressed by rational coefficients in a basis of the reciprocal lattice of the basic structure. At least one of the components of the wave vectors of the modulation with respect to the basis structure should be irrational.