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Polarization dependence of angle-resolved photoemission with submicron spatial resolution reveals emerging one-dimensionality of electrons in NbSe3

AuthorsValbuena, Miguel Ángel Rodríguez; Chudzinski, Piotr; Pons, Stephane; Conejeros, Sergio; Alemany, Pere; Canadell, Enric ; Berger, Helmuth; Frantzeskakis, Emmanouil; Avila, Jose; Asensio, Maria Carmen; Giamarchi, Thierry; Grioni, Marco
KeywordsCharge density waves
Nematic phase transition
Peierls transition
Phase transitions
Issue Date8-Feb-2019
PublisherAmerican Physical Society
CitationPhysical Review - Section B - Condensed Matter 99(7): 075118 (2019)
AbstractIn materials with nearly commensurate band filling the electron liquid may spontaneously separate into components with distinct properties, yielding complex intra- and interunit cell ordering patterns and a reduced dimensionality. Polarization-dependent angle-resolved photoemission data with submicron spatial resolution demonstrate such an electronic self-organization in NbSe3, a compound considered to be a paradigm of charge order. The new data indicate the emergence of a novel order, and reveal the one-dimensional (1D) physics hidden in a material which naively could be considered the most three dimensional of all columnar chalcogenides. The 1D physics is evidenced by a new selection rule—in two polarizations we observe two strikingly different dispersions each closely resembling apparently contradicting results of previous studies of this material.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.99.075118
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