Charge-Stripe Order and Superconductivity in Ir1−xPtxTe2

• Published in: Scientific reports Vol. 7; no. 1; pp. 1 - 7
• Main Authors: Ivashko, O., Yang, L., Destraz, D., Martino, E., Chen, Y., Guo, C. Y., Yuan, H. Q., Pisoni, A., Matus, P., Pyon, S., Kudo, K., Nohara, M., Forró, L., Rønnow, H. M., Hücker, M., v. Zimmermann, M., Chang, J.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 07.12.2017; Nature Publishing Group
• Subjects: 639/766/119/1003; 639/766/119/2795; Cooling; Humanities and Social Sciences; Hydrostatic pressure; multidisciplinary; Physics; Pressure; Science; Science (multidisciplinary); Symmetry; X-ray diffraction
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-017-16945-7

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.