Tailoring the electronic properties of SrRuO3 films in SrRuO3/LaAlO3 superlattices

Abstract

The electronic properties of SrRuO3/LaAlO3 (SRO/LAO) superlattices with different interlayer thicknesses of SRO layers were studied. As the thickness of SRO layers is reduced, the superlattices exhibit a metal-insulator transition implying transformation into a more localized state from its original bulk metallic state. The strain effect on the metal-insulator transition was also examined. The origin of the metal-insulator transition in ultrathin SRO film is discussed. All the superlattices, even those with SRO layers as thin as 2 unit cells, are ferromagnetic at low temperatures. Moreover, we demonstrate field effect devices based on such multilayer superlattice structures.

arXiv comment19 pages, 5 figures, 1 table

References in corpus (12)

• Tunable metal-insulator transition in double-layer graphene heterostructures
• Transport Properties, Thermodynamic Properties, and Electronic Structure of SrRuO3
• Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices
• Metal-insulator transition in ultrathin LaNiO3 films
• Tailoring a two-dimensional electron gas at the LaAlO3/SrTiO3 (001) interface by epitaxial strain
• Non-Fermi liquid behavior of SrRuO_3 -- evidence from infrared conductivity
• Critical thickness for itinerant ferromagnetism in ultrathin films of SrRuO${}_3$
• Carrier freeze-out induced metal-insulator transition in oxygen deficient SrTiO3 films
• Highly-confined spin-polarized two-dimensional electron gas in SrTiO${}_3$/SrRuO${}_3$ superlattices
• Phase-sensitive order parameter symmetry test experiments utilizing Nd2-xCexCuO4-y/Nb zigzag junctions
• Reversible metal-insulator transition in LaAlO3 thin films mediated by intragap defects: An alternative mechanism for resistive switching
• Nonlinear Insulator in Complex Oxides

Cited by in corpus (5)

• Ferromagnetism and conductivity in atomically thin SrRuO3
• Noncollinear Spintronics and Electric-Field Control: A Review
• Phase Instability amid Dimensional Crossover in Artificial Oxide Crystal
• Reversible room-temperature ferromagnetism in Nb-doped SrTiO3 single crystals
• Correlated Quantum Phenomena of Spin-Orbit Coupled Perovskite Oxide Heterostructures: Cases of SrRuO3 and SrIrO3-Based Artificial Superlattices