Intrinsic Properties of Stoichiometric LaOFeP

Abstract

DC and ac magnetization, resistivity, specific heat, and neutron diffraction data reveal that stoichiometric LaOFeP is metallic and non-superconducting above T = 0.35 K, with gamma = 12.5 mJ/mol*K. Neutron diffraction data at room temperature and T = 10 K are well described by the stoichiometric, tetragonal ZrCuSiAs structure and show no signs of structural distortions or long range magnetic ordering, to an estimated detectability limit of 0.07 uB/Fe. We propose a model, based on the shape of the iron-pnictide tetrahedron, that explains the differences between LaOFeP and LaOFeAs, the parent compound of the recently discovered high-Tc oxyarsenides, which, in contrast, shows both structural and spin density wave (SDW) transitions.

arXiv commentSubmitted to PRB Rapid Comm

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• Pressure evolution of low-temperature crystal structure and bonding of 37 K $T_c$ FeSe superconductor
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• Fermi surface of superconducting LaFePO determined by quantum oscillations
• Iron pnictides as a new setting for quantum criticality
• Superconductivity induced by La doping in Sr1-xLaxFBiS2 system
• Structure and Magnetic Order in the NdFeAs(O,F) Superconductor System
• (Sr_3Sc_2O_5)Fe_2As_2 as a possible parent compound for FeAs-based superconductors
• Crystal structure and phase transitions across the metal-superconductor boundary in the SmFeAsO1-xFx (0 < x < 0.20) family
• Influence of the rare-earth element on the effects of the structural and magnetic phase transitions in CeFeAsO, PrFeAsO, and NdFeAsO
• CeFePO: A Heavy Fermion Metal with Ferromagnetic Correlations
• Atomic and electronic structures of FeSe monolayer and bilayer thin films on SrTiO${}_3$ (001): a first-principles study
• Quantum criticality in the iron pnictides and chalcogenides
• New iron-based arsenide oxides (Fe2As2)(Sr4M2O6)(M = Sc, Cr)
• Quantum oscillation studies of the Fermi surface of iron-pnictide superconductors
• Lattice distortion and magnetic quantum phase transition in CeFeAs(1-x)P(x)O
• Orbital and spin effects for the upper critical field in As deficient disordered Fe pnictide superconductors
• MuSR studies of RE(O,F)FeAs (RE = La, Nd, Ce) and LaOFeP systems: possible incommensurate/stripe magnetism and superfluid density
• Lattice collapse and the magnetic phase diagram of Sr${}_{1-x}$Ca${}_x$Co${}_2$P${}_2$
• Superconducting Gap Structure of LaFePO Studied by Thermal Conductivity
• The Delicate Electronic and Magnetic Structure of the LaOFePn System (Pn = pnictogen)
• Tight binding model for iron pnictides
• Ferromagnetic spin fluctuation in LaFeAsO1-xFx
• Electron correlation in FeSe superconductor studied by bulk-sensitive photoemission spectroscopy
• Electronic structure of oxygen-free 38K superconductor Ba1-xKxFe2As2 in comparison with BaFe2As2 from first principles
• Heat capacity measurements on FeAs-based compounds: a thermodynamic probe of electronic and magnetic states
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• Itinerant Nature of Magnetism in Iron Pnictides: A first principles study
• Thermoelectric properties of iron-based superconductors and parent compounds
• Extended Drude model and role of interband transitions in the mid-infrared spectra of pnictides
• Specific Heat Discontinuity, deltaC, at Tc in BaFe2(As0.7P0.3)2 - Consistent with Unconventional Superconductivity
• Search for pressure induced superconductivity in CeFeAsO and CeFePO iron pnictides
• Fermi surface topology of LaFePO and LiFeP
• Bandwidth controlled insulator-metal transition in BaFe${}_2$S${}_3$: A Mössbauer study under pressure
• Effect of the tetrahedral distortion on the electronic properties of iron-pnictides
• Interplay of composition, structure, magnetism, and superconductivity in SmFeAs1-xPxO1-y
• Quantum Oscillation Studies of the Fermi Surface of LaFePO
• On the dual role of the d-electrons in iron-pnictides
• Electronic structure of new quaternary superconductors LaONiBi and LaOCuBi from first principles
• Tuning magnetism in FeAs-based materials via tetrahedral structure
• Quantum oscillations of the superconductor LaRu${}_2$P${}_2$ : comparable mass enhancement $\lambda \approx 1$ in Ru and Fe phosphides
• Synthesis, magnetization and magneto transport study of RECoPO (RE = La, Nd & Sm)
• Possible Superconductivity in Fe-Sb Based Materials: Density Functional Study of LiFeSb
• Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO
• Crossover of the dimensionality of 3d spin fluctuations in LaCoPO
• Effect of the isoelectronic substitution of Sb for As on the magnetic and structural properties of LaFe(As1-xSbx)O
• Low-Energy Quasiparticles Probed by Heat Transport in the Iron Based Superconductor LaFePO
• Upper critical field, critical current density and thermally activated flux flow in CaFFe0.9Co0.1As superconductor
• Avoided ferromagnetic quantum critical point: Antiferromagnetic ground state in substituted CeFePO
• Nodal-to-nodeless superconducting order parameter in LaFeAs${}_{1-x}$P${}_x$O synthesized under high pressure
• Role of zero-point effects in stabilizing the ground state structure of bulk Fe2P
• Paramagnetic Phase of a Heavy-Fermion Compound, CeFePO, Probed by 57Fe Mössbauer Spectroscopy
• High-energy spin fluctuation in low-$T_{\mathrm{c}}$ iron-based superconductor LaFePO${}_{0.9}$
• Suppression of the magnetic order in CeFeAsO: non-equivalence of hydrostatic and chemical pressure
• Absence of strong magnetic fluctuations in the iron phosphide superconductors LaFePO and Sr2ScO3FeP
• Microscopic phase diagram of LaFeAsO single crystals under pressure
• Strong spin resonance on BaFe2(As0.65P0.35)2 with Tc = 30 K