Distinct commensurate charge-density-wave phases in the2H-TaSe2structure

Abstract
Analysis of a model free energy shows that three distinct commensurate phases can exist in a layer of a material having the 2H-TaSe2 structure. Recent experimental results show that two of these phases occur in 2H-TaSe2, with a transition between them at a temperature between 30 and 52 K.