Magnetisation of hole-doped CuO2 spin chains in Sr14-xCaxCu24O41

R. Klingeler; N. Tristan; B. Büchner; M. Huecker; U. Ammerahl; A. Revcolevschi

doi:10.1103/PhysRevB.72.184406

Magnetisation of hole-doped CuO2 spin chains in Sr14-xCaxCu24O41

Strongly Correlated Electrons 2014-03-13 v2 Superconductivity

Authors: R. Klingeler , N. Tristan , B. Büchner , M. Huecker , U. Ammerahl , A. Revcolevschi

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Abstract

We report on magnetisation measurements of Sr14-xCaxCu24O41, with 0 <= x <= 12, in magnetic fields up to 16 T. The low temperature magnetic response of the CuO2 spin chains changes strongly upon doping. For x = 0, the ground state with nearly independent dimers is confirmed. Reduction of the number of holes in the chains through Ca-doping leads to an additional contribution to the magnetisation, which depends linearly on the magnetic field. Remarkably, the slope of this linear contribution increases with the Ca content. We argue that antiferromagnetic spin chains do not account for this behaviour but that the hole dynamics might be involved.

Keywords

magnetization CuO2 spin chains Sr14-xCaxCu24O41 hole doping dimers low temperature

Cite

@article{arxiv.cond-mat/0511110,
  title  = {Magnetisation of hole-doped CuO2 spin chains in Sr14-xCaxCu24O41},
  author = {R. Klingeler and N. Tristan and B. Büchner and M. Huecker and U. Ammerahl and A. Revcolevschi},
  journal= {arXiv preprint arXiv:cond-mat/0511110},
  year   = {2014}
}

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In v2, spelling of author names has been changed

Magnetisation of hole-doped CuO2 spin chains in Sr14-xCaxCu24O41

Abstract

Keywords

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