Abstract

A combined resistivity and hard x-ray diffraction study of superconductivity and charge ordering in Ir Ir1−xPtxTe2, as a function of Pt substitution and externally applied hydrostatic pressure, is presented. Experiments are focused on samples near the critical composition xc ~ 0.045 where competition and switching between charge order and superconductivity is established. We show that charge order as a function of pressure in Ir0.95Pt0.05Te2 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.

Details

Title
Charge-Stripe Order and Superconductivity in Ir1−xPtxTe2
Author
Ivashko, O 1   VIAFID ORCID Logo  ; Yang, L 2 ; Destraz, D 1 ; Martino, E 3 ; Chen, Y 4 ; Guo, C Y 4 ; Yuan, H Q 4 ; Pisoni, A 3 ; Matus, P 3 ; Pyon, S 5 ; Kudo, K 6 ; Nohara, M 6 ; Forró, L 3 ; Rønnow, H M 7   VIAFID ORCID Logo  ; Hücker, M 8 ; Zimmermann, M v 9 ; Chang, J 1 

1  Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland 
2  Laboratory of Physics of Complex Matter, Institute of Physics, Ecole Polytechnique Féderale de Lausanne (EPFL), Lausanne, Switzerland; Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Féderale de Lausanne (EPFL), Lausanne, Switzerland 
3  Laboratory of Physics of Complex Matter, Institute of Physics, Ecole Polytechnique Féderale de Lausanne (EPFL), Lausanne, Switzerland 
4  Center for Correlated Matter and Department of Physics, Zhejiang University, Zhejiang, People’s Republic of China 
5  Department of Applied Physics, The University of Tokyo, Tokyo, Japan 
6  Research Institute for Interdisciplinary Science, Okayama University, Okayama, Japan 
7  Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Féderale de Lausanne (EPFL), Lausanne, Switzerland 
8  Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel 
9  Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany 
Pages
1-7
Publication year
2017
Publication date
Dec 2017
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-017-16945-7
ProQuest document ID
1983426629
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.