Lattice Distortion and Magnetic Quantum Phase Transition inCeFeAs1−xPxO

2009/07/16 by Clarina dela Cruz, Clarina de la Cruz, W. Z. Hu +13
Business, Management and Accounting · Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Diffraction #Intellectual Capital and Performance Analysis #Iron-based superconductors research #Neutron diffraction #Order (exchange) #Orthorhombic crystal system #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.104.017204

published as Phys. Rev. Lett. 104, 017204 (2010) · 19 pages, 4 figures

arxiv created 2009/07/16 · openalex publication_date 2010/01/08 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We use neutron diffraction to study the structural and magnetic phase diagram of CeFeAs(1-x)P(x)O. We find that replacing the larger arsenic with smaller phosphorus in CeFeAs(1-x)P(x)O simultaneously suppresses the AFM order and orthorhombic distortion near x=0.4, thus suggesting the presence of a magnetic quantum critical point. Our detailed structural analysis reveals that the pnictogen height is an important controlling parameter for their electronic and magnetic properties, and may play an important role in electron pairing and superconductivity of these materials.

Citations

• Problems with reconciling density functional theory calculations with experiment in ferropnictides
• Electron-Hole Symmetry and Magnetic Coupling in Antiferromagnetic LaFeAsO
• Theory of electron nematic order in LaFeAsO
• First-principles calculations of Fe on GaAs(100)
• Intrinsic properties of stoichiometric LaFePO
• The superconductivity at 18 K in LiFeAs system
• The electronic phase diagram of the LaO1−xFxFeAs superconductor
• CeFePO: A Heavy Fermion Metal with Ferromagnetic Correlations
• Theory of the Magnetic Moment in Iron Pnictides
• Strong Correlations and Magnetic Frustration in the HighTcIron Pnictides
• Two-band superconductivity in LaFeAsO0.89F0.11 at very high magnetic fields
• Superconductivity up to 29 K in SrFe2As2and BaFe2As2at high pressures
• Strong coupling between magnetic and structural order parameters inSrFe2As2
• La claridad después de la lluvia: apuntes del natural para el viajero ilustrado y tranquilo
• Doping evolution of antiferromagnetic order and structural distortion inLaFeAsO1−xFx
• Superconductivity at 38 K in the Iron Arsenide(Ba1−xKx)Fe2As2

Cited by

• Electron Correlation and Spin Dynamics in Iron Pnictides and Chalcogenides