High-Energy Magnetic Excitations in the Cuprate Superconductor Bi2Sr2CaCu2O8+delta: Towards a Unified Description of Its Electronic and Magnetic Degrees of Freedom

M. P. M. Dean*, A. J. A. James, R. S. Springell, X. Liu, C. Monney, K. J. Zhou, R. M. Konik, J. S. Wen, Z. J. Xu, G. D. Gu, V. N. Strocov, T. Schmitt, J. P. Hill

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

71 Citations (Scopus)

Abstract

We investigate the high-energy magnetic excitation spectrum of the high-T-c cuprate superconductor Bi2Sr2CaCu2O8+delta (Bi-2212) using Cu L-3 edge resonant inelastic x-ray scattering. Broad, dispersive magnetic excitations are observed, with a zone boundary energy of similar to 300 meV and a weak dependence on doping. These excitations are strikingly similar to the bosons proposed to explain the high-energy "kink" observed in photoemission. A phenomenological calculation of the spin response, based on a parametrization of the the angle-resolved photoemission spectroscopy derived electronic structure and Yang-Rice-Zhang quasiparticles, provides a reasonable prediction of the energy dispersion of the observed magnetic excitations. These results indicate a possible unified framework to reconcile the magnetic and electronic properties of the cuprates and we discuss the advantages and disadvantages of such an approach. DOI: 10.1103/PhysRevLett.110.147001

Original languageEnglish
Article number147001
Number of pages6
JournalPhysical Review Letters
Volume110
Issue number14
DOIs
Publication statusPublished - 3 Apr 2013

Keywords

  • HIGH-TEMPERATURE SUPERCONDUCTOR
  • T-C SUPERCONDUCTORS
  • SPIN EXCITATIONS
  • NORMAL-STATE
  • LA2CUO4

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