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Showing 1 to 4 of 4 for “"polar catastrophe"”.
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First Principles Studies of Magnetic Oxides, Spin-Driven Ferroelectricity, and the Effect of Polarization in the Chemistry of Functional Heterointerfaces
… one of the largest spin-driven ferroelectric polarizations measured to date. Based on a generalized spin-current model with Heisenberg-exchange and Dzyaloshinskii-Moriya interaction energetics we explain the microscopic origin of the polarization, including its direction, coupling to the spin …
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Exploiting polar interfaces for photocatalytic water splitting: application to the anatase-cuprous oxide heterojunction
… conversion by exploiting the properties of polar interfaces coupled with finite size effects. By tuning the properties of a polar heterojunction, it may be possible to realize tailored surface chemistries that are optimized for oxidation and/or reduction. To demonstrate this concept, we …
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Spintronics Physics of Thin-film Interfaces
… calculations postulated the formation of a spin polarised two-dimensional electron gas (2DEG) in the EuO film at $\sim$1.5 nm away from the EuO(001)/LaAlO$_3$(001) interface, due to the polar catastrophe which would also enhance the $T_{C}$ of the EuO. Magnetisation depth profiles of the …
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Atomic resolution studies of oxide superlattices and ultrathin films
… interface have been proposed, including a polar catastrophe model, where a large built-in electric field in LaAlO3 films results in electron charge transfer into the SrTiO3 substrate. Other suggested possibilities include oxygen vacancies at the interface and/or oxygen vacancies in the …