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NMR evidence for static local nematicity and its cooperative interplay with low-energy magnetic fluctuations in FeSe under pressure

TitleNMR evidence for static local nematicity and its cooperative interplay with low-energy magnetic fluctuations in FeSe under pressure
Publication TypeJournal Article
Year of Publication2017
AuthorsWiecki, P, Nandi, M, Bohmer, AE, Bud'ko, SL, Canfield, PC, Furukawa, Y
JournalPhysical Review B
Volume96
Pagination180502
Date Published11
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000414954400002
Keywordshigh-temperature superconductivity, metals, order, physics, relaxation
Abstract

We present Se-77-NMR measurements on single-crystalline FeSe under pressures up to 2 GPa. Based on the observation of the splitting and broadening of the NMR spectrum due to structural twin domains, we discovered that static, local nematic ordering exists well above the bulk nematic ordering temperature, T-s. The static, local nematic order and the low-energy stripe-type antiferromagnetic spin fluctuations, as revealed by NMR spin-lattice relaxation rate measurements, are both insensitive to pressure application. These NMR results provide clear evidence for the microscopic cooperation between magnetism and local nematicity in FeSe.

DOI10.1103/PhysRevB.96.180502
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Complex States