Density functional study of LaFeAsO(1-x)F(x): a low carrier density superconductor near itinerant magnetism.

By David J. Singh, M. Du. Physical Review Letters, 2008

774 citations recorded by the source corpus.

Density functional studies of 26 K superconducting LaFeAs(O,F) are reported. We find a low carrier density, high density of states, N(E(F)), and modest phonon frequencies relative to T(c). The high N(E(F)) leads to proximity to itinerant magnetism, with competing ferromagnetic and antiferromagnetic fluctuations and the balance between these controlled by the doping level. Thus LaFeAs(O,F) is in a unique class of high T(c) superconductors: high N(E(F)) ionic metals near magnetism.

Subfields: Accounting, Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/82d24dfc970e7079426c7d5affb25357be7dfe0d

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In Accounting

1. A. Gurevich
2. Michael Johannes
3. R. Greene
4. I. Mazin
5. J. Paglione

In Condensed Matter Physics

1. A. Gurevich
2. M. McGuire
3. R. Greene
4. I. Mazin
5. J. Paglione
6. X. Xi
7. G. Stewart

In Electronic, Optical and Magnetic Materials

1. A. Gurevich
2. Jesús Carrete
3. M. McGuire
4. R. Greene
5. I. Mazin
6. J. Paglione
7. G. Stewart
8. E. Dagotto

Citations in the corpus

• High-temperature superconductivity in iron-based materials (2010, background): “This arrangement unites to produce a metallic material with nominal Fe valence of 2+, low carrier concentration and high electronic density of states dominated by Fe d-states [31].”
• Two-band superconductor magnesium diboride (2008, neutral): “[251], setting the stage for two-band superconductivity.”
• A key role for unusual spin dynamics in ferropnictides (2008, background): “First, enforcing a ferromagnetic (FM) ordering destroys magnetism nearly entirel”