Charge-Stripe Order and Superconductivity in Ir(1−x)Pt(x)Te(2)

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 c...

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Detalles Bibliográficos
Autores principales: 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.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719350/
https://www.ncbi.nlm.nih.gov/pubmed/29214992
http://dx.doi.org/10.1038/s41598-017-16945-7
Descripción
Sumario: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.

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