Hourglass dispersion in overdoped single-layered manganites

H. Ulbrich; P. Steffens; D. Lamago; Y. Sidis; M. Braden

doi:10.1103/PhysRevLett.108.247209

Hourglass dispersion in overdoped single-layered manganites

Strongly Correlated Electrons 2015-06-03 v1 Superconductivity

Authors: H. Ulbrich , P. Steffens , D. Lamago , Y. Sidis , M. Braden

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

The excitation spectrum in single-layered Nd(0.33)Sr(1.67)MnO4 and Pr(0.33)Ca(1.67)MnO4 resembles the hourglass-like excitation dispersion seen in various cuprates superconductors. However, our spin-wave dispersion in Pr(0.33)Ca(1.67)MnO4, which exhibits a large correlation length of the magnetic order, showing outward-dispersing branches starting from the incommensurate zone-centres. The magnetic correlation length is identified as the decisive parameter to suppress this branches and generating an correct hourglass shape.

Keywords

hourglass dispersion single-layered manganites spin-wave dispersion magnetic correlation length incommensurate zone-centres

Cite

@article{arxiv.1112.1799,
  title  = {Hourglass dispersion in overdoped single-layered manganites},
  author = {H. Ulbrich and P. Steffens and D. Lamago and Y. Sidis and M. Braden},
  journal= {arXiv preprint arXiv:1112.1799},
  year   = {2015}
}

Related papers

View all related →

Superconductivity · Physics

Hourglass dispersion and resonance of magnetic excitations in the superconducting state of the single-layer cuprate HgBa2CuO4+{\delta} near optimal doping

M. K. Chan, Y. Tang, C. J. Dorow, J. Jeong +7

2017-02-01

Superconductivity · Physics

Theory of the hourglass dispersion of magnetic excitations in high-T$_c$ cuprates

Roland Zeyher

2010-06-16

Superconductivity · Physics

Magnetic hour-glass dispersion and its relation to high-temperature superconductivity in iron-tuned Fe$_{1+y}$Te$_{0.7}$Se$_{0.3}$