Magnetism and superconductivity in Fe1+yTe1-xSex

Tranquada, John M.; Xu, Guangyong; Zaliznyak, Igor A.

doi:10.1088/1361-648X/ab3b3b

Title: Magnetism and superconductivity in Fe_1+yTe_1-xSe_x

Journal Article · Wed Aug 14 00:00:00 EDT 2019 · Journal of Physics. Condensed Matter

DOI:https://doi.org/10.1088/1361-648X/ab3b3b· OSTI ID:1558251

^[1]; Xu, Guangyong ^[2]; Zaliznyak, Igor A. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

Neutron scattering has played a significant role in characterizing magnetic and structural correlations in Fe$$_{1+y}$$Te$$_{1-x}$$Se$$_x$$ and their connections with superconductivity. Here we review several key aspects of the physics of iron chalcogenide superconductors where neutron studies played a key role. These topics include the phase diagram of Fe$$_{1+y}$$Te$$_{1-x}$$Se$$_{x}$$, where the doping-dependence of structural transitions can be understood from a mapping to the anisotropic random field Ising model. We then discuss orbital-selective Mott physics in the Fe chalcogenide series, where temperature-dependent magnetism in the parent material provided one of the earliest cases for orbital-selective correlation effects in a Hund's metal. Finally, we elaborate on the character of local magnetic correlations revealed by neutron scattering, its dependence on temperature and composition, and the connections to nematicity and superconductivity.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012704

OSTI ID:: 1558251

Report Number(s):: BNL-212008-2019-JAAM

Journal Information:: Journal of Physics. Condensed Matter, Vol. 32, Issue 37; ISSN 0953-8984

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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High-temperature superconductivity in iron pnictides and chalcogenides Si, Qimiao; Yu, Rong; Abrahams, Elihu Nature Reviews Materials, Vol. 1, Issue 4 https://doi.org/10.1038/natrevmats.2016.17	journal	March 2016
Ferro-Orbital Ordering Transition in Iron Telluride ${Fe}_{1 + y} Te$ Fobes, David; Zaliznyak, Igor A.; Xu, Zhijun Physical Review Letters, Vol. 112, Issue 18 https://doi.org/10.1103/PhysRevLett.112.187202	journal	May 2014
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