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

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

2009-07-16

arxiv.org/abs/0907.2853v1

Phys. Rev. Lett. 104, 017204 (2010)

Physics

Condensed Matter

Superconductivity

19 pages, 4 figures

Scientific paper

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.

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