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Suppression of the magnetic order in CeFeAsO: non-equivalence of hydrostatic and chemical pressure

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arxiv 1805.00759 v1 pith:4FKOJPPK submitted 2018-05-02 cond-mat.supr-con

Suppression of the magnetic order in CeFeAsO: non-equivalence of hydrostatic and chemical pressure

classification cond-mat.supr-con
keywords hydrostaticpressurecefeasochemicalelectronicmagneticorderpressures
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a detailed investigation of the electronic properties of CeFeAsO under chemical (As by P substitution) and hydrostatic pressure by means of in-house and synchrotron M\"ossbauer spectroscopy. The Fe magnetism is suppressed due to both pressures and no magnetic order was observed above a P-substitution level of 40% or 5.2 GPa hydrostatic pressure. We compared both pressures and found that the isovalent As by P substitution change the crystallographic and electronic properties differently than hydrostatic pressure.

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