What is it about?

The incommensurately modulated structure is reported for the low-dimensional spin-1∕2 quantum magnet TiOCl and the structural distortions in the spin-Peierls state (stable below Tc1=67K) and in the incommensurate phase (stable between Tc1 and Tc2=90K) is analyzed.

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Why is it important?

Both the incommensurability and the twofold superstructure at low temperatures are the result of frustration between a spin-Peierls pairing on chains of Ti atoms as driving force and elastic coupling between neighboring chains mediated by the oxygen atoms.

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This page is a summary of: Structure of the incommensurate phase of the quantum magnet TiOCl, Physical Review B, June 2006, American Physical Society (APS), DOI: 10.1103/physrevb.73.214410.
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