Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors

Kuo, H. -H.; Chu, J. -H.; Palmstrom, J. C.; Kivelson, S. A.; Fisher, I. R.

doi:10.1126/science.aab0103

Title: Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors

Journal Article · Thu May 19 00:00:00 EDT 2016 · Science

DOI:https://doi.org/10.1126/science.aab0103· OSTI ID:1280374

Kuo, H. -H. ^[1]; Chu, J. -H. ^[1];

^[1]; Kivelson, S. A. ^[1]; Fisher, I. R. ^[1]

SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)

A key actor in the conventional theory of superconductivity is the induced interaction between electrons mediated by the exchange of virtual collective fluctuations (phonons in the case of conventional s-wave superconductors). Other collective modes that can play the same role, especially spin fluctuations, have been widely discussed in the context of high-temperature and heavy Fermion superconductors. The strength of such collective fluctuations is measured by the associated susceptibility. Here we use differential elastoresistance measurements from five optimally doped iron-based superconductors to show that divergent nematic susceptibility appears to be a generic feature in the optimal doping regime of these materials. This observation motivates consideration of the effects of nematic fluctuations on the superconducting pairing interaction in this family of compounds and possibly beyond.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1280374

Journal Information:: Science, Vol. 352, Issue 6288; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 206 works

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Resistivity near a nematic quantum critical point: Impact of acoustic phonons de Carvalho, V. S.; Fernandes, R. M. arXiv https://doi.org/10.48550/arxiv.1906.03205	text	January 2019
Measurements of elastoresistance under pressure by combining in-situ tunable quasi-uniaxial stress with hydrostatic pressure Gati, Elena; Xiang, Li; Bud'ko, Sergey L. arXiv https://doi.org/10.48550/arxiv.1911.08599	text	January 2019
Antiferroic electronic structure in the nonmagnetic superconducting state of the iron-based superconductors Shimojima, Takahiro; Malaeb, Walid; Nakamura, Asuka Science Advances, Vol. 3, Issue 8 https://doi.org/10.1126/sciadv.1700466	journal	August 2017
Dichotomy between in-plane magnetic susceptibility and resistivity anisotropies in extremely strained $BaFe_{2}As_{2}$ He, Mingquan; Wang, Liran; Ahn, Felix arXiv https://doi.org/10.48550/arxiv.1610.05575	text	January 2016
Quantum criticality in the spin-${1}/{2}$ Heisenberg chain system copper pyrazine dinitrate Breunig, Oliver; Garst, Markus; Klümper, Andreas arXiv https://doi.org/10.48550/arxiv.1709.00274	text	January 2017

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