2016/08/31 by Anshul Kogar, G. A. de la Peña, Gilberto A. de la Pena +13 · 1 citation
Materials Science · Physics and Astronomy · #Charge (physics) #Charge density #Charge density wave #Condensed matter physics #Dome (geology) #Geology #Intercalation (chemistry) #Iron-based superconductors research #Materials science #Organic and Molecular Conductors Research #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.118.027002
published as Phys. Rev. Lett. 118, 027002 (2017) · 5 pages, 4 figures
openalex created_date 2016/09/16 · openalex publication_date 2017/01/11 · arxiv created 2017/01/13 · arxiv updated 2017/01/16 · openalex updated_date 2026/08/06
X-ray diffraction was employed to study the evolution of the charge density wave (CDW) in CuxTiSe2 as a function of copper intercalation in order to clarify the relationship between the CDW and superconductivity. The results show a CDW incommensuration arising at an intercalation value coincident with the onset of superconductivity at around x=0.055(5). Additionally, it was found that the charge density wave persists to higher intercalant concentrations than previously assumed, demonstrating that the CDW does not terminate inside the superconducting dome. A charge density wave peak was observed in samples up to x=0.091(6), the highest copper concentration examined in this study. The phase diagram established in this work suggests that charge density wave incommensuration may play a role in the formation of the superconducting state.