Lattice distortion and magnetic quantum phase transition in CeFeAs(1-x)P(x)O

Clarina de la Cruz; W. Z. Hu; Shiliang Li; Q. Huang; J. W. Lynn; M. A. Green; G. F. Chen; N. L. Wang; H. A. Mook; Qimiao Si; Pengcheng Dai

doi:10.1103/PhysRevLett.104.017204

Lattice distortion and magnetic quantum phase transition in CeFeAs(1-x)P(x)O

Superconductivity 2015-05-13 v1

Authors: Clarina de la Cruz , W. Z. Hu , Shiliang Li , Q. Huang , J. W. Lynn , M. A. Green , G. F. Chen , N. L. Wang , H. A. Mook , Qimiao Si , Pengcheng Dai

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Abstract

We use neutron scattering to show that replacing the larger arsenic with smaller phosphorus in CeFeAs(1-x)P(x)O simultaneously suppresses the AF order and orthorhombic distortion near x = 0.4, providing evidence for a magnetic quantum critical point. Furthermore, we find that the pnictogen height in iron arsenide is an important controlling parameter for their electronic and magnetic properties, and may play an important role in electron pairing and superconductivity.

Keywords

quantum critical point CeFeAs(1-x)P(x)O neutron scattering lattice distortion antiferromagnetic order pnictogen height iron arsenide

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@article{arxiv.0907.2853,
  title  = {Lattice distortion and magnetic quantum phase transition in CeFeAs(1-x)P(x)O},
  author = {Clarina de la Cruz and W. Z. Hu and Shiliang Li and Q. Huang and J. W. Lynn and M. A. Green and G. F. Chen and N. L. Wang and H. A. Mook and Qimiao Si and Pengcheng Dai},
  journal= {arXiv preprint arXiv:0907.2853},
  year   = {2015}
}

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19 pages, 4 figures

Lattice distortion and magnetic quantum phase transition in CeFeAs(1-x)P(x)O

Abstract

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