2010/08/31 by A. Taraphder, S. Koley, N. S. Vidhyadhiraja +1 · 33 citations
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Algorithm #Charge (physics) #Charge density wave #Computer science #Condensed matter physics #Exciton #Organic and Molecular Conductors Research #Perovskite Materials and Applications #Physics #Quantum mechanics #State (computer science) #Superconductivity #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.106.236405
published in Physical Review Letters 106(23), 236405 (American Physical Society) · 4 pages,8 figures
openalex publication_date 2011/06/10 · arxiv created 2011/06/14 · arxiv updated 2015/05/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Recent experiments on 2H-TaSe(2) contradict the long-held view of the charge density wave arising from a nested band structure. An intrinsically strong coupling view, involving a charge density wave state arising as a Bose condensation of preformed excitons emerges as an attractive, albeit scantily investigated alternative. Using the local density approximation plus multiorbital dynamic mean field theory, we show that this scenario agrees with a variety of normal state data for 2H-TaSe(2). Based thereupon, the ordered states in a subset of dichalcogenides should be viewed as instabilities of a correlated, preformed excitonic liquid.