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Condensed Matter > Strongly Correlated Electrons
Title: The chiral phase transition in charge ordered 1T-TiSe2
(Submitted on 5 Apr 2012 (v1), last revised 7 May 2013 (this version, v3))
Abstract: It was recently discovered that the low temperature, charge ordered phase of 1T-TiSe2 has a chiral character. This unexpected chirality in a system described by a scalar order parameter could be explained in a model where the emergence of relative phase shifts between three charge density wave components breaks the inversion symmetry of the lattice. Here, we present experimental evidence for the sequence of phase transitions predicted by that theory, going from disorder to non-chiral and finally to chiral charge order. Employing X-ray diffraction, specific heat, and electrical transport measurements, we find that a novel phase transition occurs ~7 K below the main charge ordering transition in TiSe2, in agreement with the predicted hierarchy of charge ordered phases.
Submission history
From: Jasper van Wezel [view email][v1] Thu, 5 Apr 2012 22:54:30 GMT (406kb,D)
[v2] Thu, 18 Apr 2013 10:20:20 GMT (1249kb,D)
[v3] Tue, 7 May 2013 08:43:48 GMT (1250kb,D)
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