Positron potential and wavefunction in LaFeAsO

Details Positron potential and wavefunction in LaFeAsO Positron potential and wavefunction in LaFeAsO

2008-05-29

arxiv.org/abs/0805.4584v1

Phys. Rev. B 78, 052503 (2008)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.78.052503

We report calculations of the positron potential and wavefunction in LaFeAsO. These calculations show that the positron wavefunction does sample the entire unit cell although it is largest in the interstices of the La layer adjacent to As atoms. The implication is that angular correlation of annihilation radiation (ACAR) is a viable probe of the Fermi surfaces in this material. The results also apply to positive muons, and indicate that these will be localized in the La layer adjacent to As.

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