Electrical and magnetic properties of layered oxypnictide LaOCoPn (Pn = P, As)

Jin, Xinzhe; Masubuchi, Toshihiro; Watanabe, T.; Takase, Kouichi; Takano, Yoshiki

doi:10.1088/1742-6596/150/5/052085

Cited by 2 publications

(2 citation statements)

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“…As discussed above there is a pressure range in which we obtain a ferromagnetic ordering along the Fe planes, in agreement with the available experiments 30 , a fact which was not observed in other pnictides based superconductors. However, the P based ones, LaCoPO is found to be ferromagnetic at ambient pressure 41,42 , and therefore not a superconductor, similarly to the case of FeTe. The anion height above the Fe planes, is invoked as a possible parameter correlated with both the superconducting T c and the magnetic phase.…”

Section: Resultsmentioning

confidence: 97%

Theoretical investigation of FeTe magnetic ordering under hydrostatic pressure

Monni¹,

Bernardini²,

Profeta³

et al. 2013

Phys. Rev. B

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We investigate the pressure phase diagram of FeTe, predicting structural and magnetic properties in the normal state at zero temperature within density functional theory. We carefully examined several possible different crystal structures over a pressure range up to approximate to 30 GPa: simple tetragonal (PbO type), simple monoclinic, orthorhombic (MnP type), hexagonal (NiAs and wurzite type), and cubic (CsCl and NaCl type). We predict pressure to drive the system through different magnetic ordering (notably also some ferromagnetic phases), eventually suppressing magnetism at around 17 GPa. We speculate the ferromagnetic order to be the reason for the absence of a superconducting phase in FeTe at variance with the case of FeSe. DOI: 10.1103/PhysRevB.87.09451

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