Depth Profile Investigation of LaAlO3(001)/EuO(001) using Polarised Neutron Reflectivity
The aims of the proposed experiment are to study the magnetic and structural depth profile of the LaAlO3/EuO system and to investigate the structural and magnetic imperfections of the interface by specular reflectivity of a monochromatic polarised beam at D17. Polarised neutron reflectivity (PNR) has the advantage of probing multilayer systems while distinguishing the properties of each layer. Therefore, detecting an enhancement in the magnetisation at the interface, which may arise as a result of the formation of a two-dimensional electron gas (2DEG) can be achieved. The results obtained from this experiment will give a better understanding of the mechanism with which a 2DEG can be formed in LaAlO3(001)/EuO(001) in particular and for oxide interfaces in general. As large proportion (~47.86%) of the naturally occurring Eu contains the isotope, 151Eu, which has an energy-dependent coherent scattering length [1]. Therefore we plan to use monochromatic PNR to determine accurately the magnetic moment of the EuO layer and the interface.
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R.O. Aboljadayel; BARNES Crispin H; HAWKINS Max; IONESCU Adrian; LANGRIDGE Sean; SAERBECK Thomas; STEINKE Nina-Juliane and ZIEBECK Kurt. (2015). Depth Profile Investigation of LaAlO3(001)/EuO(001) using Polarised Neutron Reflectivity. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-200
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