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Title: A disorder-enhanced quasi-one-dimensional superconductor
Authors: Petrović, Alexander Paul
Ansermet, Diane
Chernyshov, D.
Hoesch, M.
Salloum, D.
Gougeon, P.
Potel, M.
Boeri, L.
Panagopoulos, Christos
Keywords: Superconductor
Molybdenum Complex
Issue Date: 2016
Source: Petrović, A. P., Ansermet, D., Chernyshov, D., Hoesch, M., Salloum, D., Gougeon, P., . . . Panagopoulos, C. (2016). A disorder-enhanced quasi-one-dimensional superconductor. Nature Communications, 7, 12262-. doi:10.1038/ncomms12262
Series/Report no.: Nature Communications
Abstract: A powerful approach to analysing quantum systems with dimensionality d>1 involves adding a weak coupling to an array of one-dimensional (1D) chains. The resultant quasi-1D (q1D) systems can exhibit long-range order at low temperature, but are heavily influenced by interactions and disorder due to their large anisotropies. Real q1D materials are therefore ideal candidates not only to provoke, test and refine theories of strongly correlated matter, but also to search for unusual emergent electronic phases. Here we report the unprecedented enhancement of a superconducting instability by disorder in single crystals of Na2−δMo6Se6, a q1D superconductor comprising MoSe chains weakly coupled by Na atoms. We argue that disorder-enhanced Coulomb pair-breaking (which usually destroys superconductivity) may be averted due to a screened long-range Coulomb repulsion intrinsic to disordered q1D materials. Our results illustrate the capability of disorder to tune and induce new correlated electron physics in low-dimensional materials.
DOI: 10.1038/ncomms12262
Rights: © 2016 The Author(s) (Published by Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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