2017/08/31 by O. Ivashko, Oleh Ivashko, L. Yang +21 · 13 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Charge ordering #Condensed matter physics #Diffraction #Electrical resistivity and conductivity #Hydrostatic pressure #Iron-based superconductors research #Materials science #Order (exchange) #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #Thermodynamics #cond-mat.supr-con
paper · pdf · doi:10.1038/s41598-017-16945-7
published in Scientific Reports 7(1), 17157 (Nature Portfolio) · 8 pages, 4 figures: Accepted in Scientific Reports
arxiv created 2017/11/27 · openalex publication_date 2017/12/01 · arxiv updated 2017/12/08 · openalex created_date 2017/12/22 · openalex updated_date 2026/08/06
Abstract A combined resistivity and hard x-ray diffraction study of superconductivity and charge ordering in Ir Ir 1−x Pt x Te 2 , as a function of Pt substitution and externally applied hydrostatic pressure, is presented. Experiments are focused on samples near the critical composition x c ~ 0.045 where competition and switching between charge order and superconductivity is established. We show that charge order as a function of pressure in Ir 0.95 Pt 0.05 Te 2 is preempted — and hence triggered — by a structural transition. Charge ordering appears uniaxially along the short crystallographic (1, 0, 1) domain axis with a (1/5, 0, 1/5) modulation. Based on these results we draw a charge-order phase diagram and discuss the relation between stripe ordering and superconductivity.