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Title: Magnetism and superconductivity in Fe1+yTe1-xSex

Abstract

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.

Authors:
ORCiD logo [1];  [2];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1558251
Report Number(s):
BNL-212008-2019-JAAM
Journal ID: ISSN 0953-8984
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 32; Journal Issue: 37; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Tranquada, John M., Xu, Guangyong, and Zaliznyak, Igor A. Magnetism and superconductivity in Fe1+yTe1-xSex. United States: N. p., 2019. Web. https://doi.org/10.1088/1361-648X/ab3b3b.
Tranquada, John M., Xu, Guangyong, & Zaliznyak, Igor A. Magnetism and superconductivity in Fe1+yTe1-xSex. United States. https://doi.org/10.1088/1361-648X/ab3b3b
Tranquada, John M., Xu, Guangyong, and Zaliznyak, Igor A. Wed . "Magnetism and superconductivity in Fe1+yTe1-xSex". United States. https://doi.org/10.1088/1361-648X/ab3b3b. https://www.osti.gov/servlets/purl/1558251.
@article{osti_1558251,
title = {Magnetism and superconductivity in Fe1+yTe1-xSex},
author = {Tranquada, John M. and Xu, Guangyong and Zaliznyak, Igor A.},
abstractNote = {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.},
doi = {10.1088/1361-648X/ab3b3b},
journal = {Journal of Physics. Condensed Matter},
number = 37,
volume = 32,
place = {United States},
year = {2019},
month = {8}
}

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