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arXiv · 1511.02561

Ferromagnetic instability of interlayer floating electrons in quasi-two-dimensional electride Y$_2$C

Takeshi Inoshita·Noriaki Hamada·Hideo Hosono
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Abstract

Ab initio electronic structure calculations show that the recently identified quasi-two-dimensional electride Y$_2$C is a weak itinerant ferromagnet or at least close to a ferromagnetic instability. The ferromagnetism is induced by the electride electrons, which are loosely bound around interstitial sites and overlap with each other to form two-dimensional interlayer conduction bands. The semimetallicity and two-dimensionality of the band structure are the key to understanding this ferromagnetic instability.

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Takeshi Inoshita, Noriaki Hamada, Hideo Hosono. 2015-11-09. Ferromagnetic instability of interlayer floating electrons in quasi-two-dimensional electride Y$_2$C. https://doi.org/10.1103/physrevb.92.201109

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