2017/03/17 by S. Kunkemöller, P. Steffens, P. Link +5
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Energy (signal processing) #Inelastic neutron scattering #Magnetic and transport properties of perovskites and related materials #Neutron #Neutron scattering #Nuclear physics #Observable #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.118.147002
published as Phys. Rev. Lett. 118, 147002 (2017) · accepted in Phys. Rev. Lett. (2017)
arxiv created 2017/03/17 · openalex publication_date 2017/04/05 · openalex created_date 2017/04/14 · arxiv updated 2017/06/15 · openalex updated_date 2026/08/05
Inelastic neutron scattering experiments on Sr2RuO4 determine the spectral weight of the nesting induced magnetic fluctuations across the superconducting transition. There is no observable change at the superconducting transition down to an energy of \ensuremath∼0.35 meV, which is well below the 2\mathrm\ensuremathΔ values reported in several tunneling experiments. At this and higher energies magnetic fluctuations clearly persist in the superconducting state. Only at energies below \ensuremath∼0.3 meV can evidence for partial suppression of spectral weight in the superconducting state be observed. This strongly suggests that the one-dimensional bands with the associated nesting fluctuations do not form the active, highly gapped bands in the superconducting pairing in Sr2RuO4.