Origin of orbital magnetic moment in e-beam evaporated SrRuO3 thin films studied by soft X-ray magnetic circular dichroism

Jena, Satyaranjan; Kumari, Anupama; Dawn, R.; Hussain, A.; Verma, V. K.; Gardner, H.J.; Aabdin, Z.; Amemiya, Kenta; Singh, V. R.

doi:10.1016/j.jallcom.2023.169740

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2024

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Recent Progress in Multiferroics and Its Composites

Patra,

Parida,

Singh

et al. 2024

Springer Proceedings in Physics

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Recent Progress in Multiferroics and Its Composites

Patra,

Parida,

Singh

et al. 2024

Springer Proceedings in Physics

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First principles electron transport in magnetoelectric SrRuO₃/BaTiO₃/SrTiO₃/SrRuO₃ interfaces

Filipoiu,

Plugaru,

Sandu

et al. 2024

Nanotechnology

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Recently, all-oxide ferroelectric tunnel junctions, with single or composite potential barriers based on SrRuO3/BaTiO3/SrTiO3 (SRO/BTO/STO) perovskites, have drawn a particular interest for high density low power applications, due to their highly tunable transport properties and device scaling down possibility to atomic size. Here, using first principles calculations and the NEGFs formalism, we explore the electronic structure and tunneling transport properties in magnetoelectric SRO/BTO/mSTO/SRO interfaces, (m = 0, 2, or 4 unit cells), considering both the RuO6 octahedra tilts and magnetic SRO electrodes. Our main results may be summarized as follows: i) The band alignment schemes predict that polarization direction may determine both Schottky barrier or Ohmic contacts for m(STO)=0, but only Schottky contacts for m(STO)=2 and 4 junctions; ii) The tunnel electroresistance and tunnel magnetoresistance ratios are evaluated at 0 and 300 K; iii) The most magnetoelectric responsive interfaces are obtained for the m(STO)=2 heterostructure, this system also showing co-existent giant tunnel electroresistance and tunnel magnetoresistance effects; iv) The interfacial magnetoelectric coupling is not strong enough to control the tunnel magnetoresistance by polarization switching, in spite of significant SRO ferromagnetism.

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Origin of orbital magnetic moment in e-beam evaporated SrRuO3 thin films studied by soft X-ray magnetic circular dichroism

Cited by 2 publications

References 35 publications

Recent Progress in Multiferroics and Its Composites

Recent Progress in Multiferroics and Its Composites

First principles electron transport in magnetoelectric SrRuO₃/BaTiO₃/SrTiO₃/SrRuO₃ interfaces

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Origin of orbital magnetic moment in e-beam evaporated SrRuO3 thin films studied by soft X-ray magnetic circular dichroism

Cited by 2 publications

References 35 publications

Recent Progress in Multiferroics and Its Composites

Recent Progress in Multiferroics and Its Composites

First principles electron transport in magnetoelectric SrRuO3/BaTiO3/SrTiO3/SrRuO3 interfaces

Contact Info

Product

Resources

About

First principles electron transport in magnetoelectric SrRuO₃/BaTiO₃/SrTiO₃/SrRuO₃ interfaces