MuSR studies of RE(O,F)FeAs (RE = La, Nd, Ce) and LaOFeP systems: possible incommensurate/stripe magnetism and superfluid density

Abstract

Muon spin relaxation (MuSR) measurements in iron oxy-pnictide systems have revealed: (1) commensurate long-range order in undoped LaOFeAs; (2) Bessel function line shape in La(O0.97F0.03)FeAs which indicates possible incommensurate or stripe magnetism; (3) anomalous weak magnetism existing in superconducting LaOFeP, Ce(O0.84F0.16)FeAs, and Nd(O0.88F0.12)FeAs but absent in superconducting La(O0.92F0.08)FeAs; and (4) scaling of superfluid density and Tc in the Ce, La, and Nd-FeAs superconductors following a nearly linear relationship found in cuprates.

arXiv comment4 pages, 5 figures (color)

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• Magnetism in Fe-based superconductors
• Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation
• Pressure Induced Static Magnetic Order in Superconducting FeSe_1-x
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• Coexistence of incommensurate magnetism and superconductivity in Fe_{1+y}Se_xTe_{1-x}
• Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
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• Nodeless Superconductivity and its Evolution with Pressure in the Layered Dirac Semimetal 2M-WS_2
• The poisoning effect of Mn in LaFe(1-x)Mn(x)AsO(0.89)F(0.11): unveiling a quantum critical point in the phase diagram of iron-based superconductors
• Nanoscopic coexistence of magnetic and superconducting states within the FeAs layers of CeFeAsO1-xFx
• Energy-scale phenomenology and pairing via resonant spin-charge motion in FeAs, CuO, heavy-fermion and other exotic superconductors
• Magnetism and Disorder Effects on muSR Measurements of the Magnetic Penetration Depth in Iron-Based Superconductors
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• Mutual independence of critical temperature and superfluid density under pressure in optimally electron-doped superconducting LaFeAsO${}_{1-x}$F${}_x$
• Soft and Isotropic Phonons in PrFeAsO_{1-y}
• Probing the Ground State Properties of Iron-based Superconducting Pnictides and Related Systems by Muon-Spin Spectroscopy
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• Disentangling superconducting and magnetic orders in NaFe_1-xNi_xAs using muon spin rotation
• The double life of electrons in magnetic iron pnictides, as revealed by NMR
• New insight into the physics of iron pnictides from optical and penetration depth data
• Spatial competition of the ground states in 1111 iron pnictides
• Importance of dxy orbital and electron correlation in iron-based superconductors revealed by phase diagram for 1111-system
• Fe-spin reorientation in PrFeAsO : Evidences from resistivity and specific heat studies
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• Scaling of the physical properties in Ba(Fe,Ni)2As2 single crystals: Evidence for quantum fluctuations
• Crossover between magnetism and superconductivity in low H-doped LaFeAsO
• Unconventional superconductivity originating from disconnected Fermi surfaces in the iron-based compound
• Absence of strong magnetic fluctuations in the iron phosphide superconductors LaFePO and Sr2ScO3FeP
• Effect of the iron valence in the two types of layers in LiFeO${}_2$Fe${}_2$Se${}_2$
• A predictive bond order model connects covalent superconductivity, including cuprates, oxypnictides or HfN based materials
• HTSC Cuprate Phase Diagram Using a Modified Boson-Fermion-Gossamer Model Describing Competing Orders, a Quantum Critical Point and Possible Resonance Complex
• Evidence for negative thermal expansion in the superconducting precursor phase SmFeAsO
• Linear Scaling of the Superfluid Density with the Critical Temperature in the Layered Superconductor 2H-NbSe_2
• No anomalous spin fluctuation in optimally doped and overdoped iron-based oxypnictide superconductors LaFeAsO${}_{1-x}$F${}_x$ probed by muon spin relaxation
• Cooperative order in the weakly magnetic domain of LaFeAsO${}_{1-x}$F${}_x$ near the doping phase boundary