Evolution of the Spin Susceptibility of High-$T_c$ Superconductors

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dc.creatorHwang, J.
dc.creatorTimusk, T.
dc.creatorSChachinger, E.
dc.creatorCarbotte, J. P.
dc.date2006-10-04
dc.date.accessioned2026-07-07T08:19:45Z
dc.date.available2026-07-07T08:19:45Z
dc.descriptionWe demonstrate that a new tool, a model independent numerical Eliashberg inversion of the optical self-energy, based on maximum entropy considerations can be used to extract the magnetic excitation spectra of high-transition-temperature superconductors. In Bi-2212 we explicitly show that the magnetic mode that dominates the self-energy at low temperatures directly evolves out of a smooth transfer of spectral weight to the mode from the continuum just above it. This redistribution starts already at 200 K in optimally doped materials but is much weaker in overdoped samples. This provides evidence for the magnetic origin of the superconductivity and presents a challenge to theories of the spin susceptibility and to neutron scattering experiments in high-temperature superconductors.
dc.descriptionFour pages three figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0610127
dc.identifierhttp://arxiv.org/abs/cond-mat/0610127
dc.identifierPhys. Rev. B 75, 144508 (2007).
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/134869
dc.subjectSuperconductivity
dc.titleEvolution of the Spin Susceptibility of High-$T_c$ Superconductors
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