Suppression of Superconductivity and Nematic Order in Fe1–ySe1–xSx (0 ≤ x ≤ 1; y ≤ 0.1) Crystals by Anion Height Disorder
- Aifeng Wang*Aifeng Wang*Email: [email protected]Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United StatesMore by Aifeng Wang
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- Ana MilosavljevicAna MilosavljevicCenter for Solid State Physics and New Materials, Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, SerbiaMore by Ana Milosavljevic
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- A. M. Milinda AbeykoonA. M. Milinda AbeykoonNational Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United StatesMore by A. M. Milinda Abeykoon
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- Valentin IvanovskiValentin IvanovskiVinca Institute of Nuclear Sciences, University of Belgrade, Belgrade 11001, SerbiaMore by Valentin Ivanovski
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- Qianheng DuQianheng DuCondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United StatesMaterials Science and Chemical Engineering Department, Stony Brook University, Stony Brook, New York 11790, United StatesMore by Qianheng Du
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- Andreas BaumAndreas BaumWalther Meissner Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyFakultät für Physik E23, Technische Universität München, 85748 Garching, GermanyMore by Andreas Baum
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- Eli StavitskiEli StavitskiNational Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United StatesMore by Eli Stavitski
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- Yu LiuYu LiuCondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United StatesMore by Yu Liu
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- Nenad LazarevicNenad LazarevicCenter for Solid State Physics and New Materials, Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, SerbiaMore by Nenad Lazarevic
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- Klaus AttenkoferKlaus AttenkoferNational Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United StatesMore by Klaus Attenkofer
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- Rudi HacklRudi HacklWalther Meissner Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyFakultät für Physik E23, Technische Universität München, 85748 Garching, GermanyMore by Rudi Hackl
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- Zoran PopovicZoran PopovicCenter for Solid State Physics and New Materials, Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, SerbiaSerbian Academy of Sciences and Arts, Kneza Mihaila 35, Belgrade 11000, SerbiaMore by Zoran Popovic
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- Cedomir Petrovic*Cedomir Petrovic*Email: [email protected]Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United StatesMaterials Science and Chemical Engineering Department, Stony Brook University, Stony Brook, New York 11790, United StatesMore by Cedomir Petrovic
Abstract
Connections between crystal chemistry and critical temperature Tc have been in the focus of superconductivity, one of the most widely studied phenomena in physics, chemistry, and materials science alike. In most Fe-based superconductors, materials chemistry and physics conspire so that Tc correlates with the average anion height above the Fe plane, i.e., with the geometry of the FeAs4 or FeCh4 (Ch = Te, Se, or S) tetrahedron. By synthesizing Fe1–ySe1–xSx (0 ≤ x ≤ 1; y ≤ 0.1), we find that in alloyed crystals Tc is not correlated with the anion height like it is for most other Fe superconductors. Instead, changes in Tc(x) and tetragonal-to-orthorhombic (nematic) transition Ts(x) upon cooling are correlated with disorder in Fe vibrations in the direction orthogonal to Fe planes, along the crystallographic c-axis. The disorder stems from the random nature of S substitution, causing deformed Fe(Se,S)4 tetrahedra with different Fe–Se and Fe–S bond distances. Our results provide evidence of Tc and Ts suppression by disorder in anion height. The connection to local crystal chemistry may be exploited in computational prediction of new superconducting materials with FeSe/S building blocks.
Cited By
This article is cited by 4 publications.
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(17)
, 6900-6906. https://doi.org/10.1021/acs.nanolett.2c01282
- Y. A. Ovchenkov, D. A. Chareev, D. E. Presnov, O. S. Volkova, A. N. Vasiliev. Crossover in Low-temperature Ground State of Fe(Se,Te) Compounds. Journal of Superconductivity and Novel Magnetism 2023, 36
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, 183-188. https://doi.org/10.1007/s10948-022-06437-9
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x
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