Journal Article

IMPULSE-2018-00165

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Absence of a Large Superconductivity-Induced Gap in Magnetic Fluctuations of $ Sr_ 2 RuO _4$

Kunkemöller, S. ; Steffens, P. ; Link, P.MLZ* ; Sidis, Y. ; Mao, Z. Q. ; Maeno, Y. ; Braden, M.

2017
APS College Park, Md.

Please use a persistent id in citations: doi:10.1103/PhysRevLett.118.147002

Abstract: Inelastic neutron scattering experiments on Sr2RuO4 determine the spectral weight of the nestinginduced magnetic fluctuations across the superconducting transition. There is no observable change at thesuperconducting transition down to an energy of ∼0.35 meV, which is well below the 2Δ values reported inseveral tunneling experiments. At this and higher energies magnetic fluctuations clearly persist in thesuperconducting state. Only at energies below ∼0.3 meV can evidence for partial suppression of spectralweight in the superconducting state be observed. This strongly suggests that the one-dimensional bandswith the associated nesting fluctuations do not form the active, highly gapped bands in the superconductingpairing in Sr2RuO4.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. PANDA

Experiment(s):

1. PANDA: Cold three axes spectrometer (SR2)

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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