Ferroelectric control of spin-polarized two-dimensional electron gas

Abstract

Spin-polarized two-dimensional electron gas (2DEG) at oxide interfaces is an emerging physical phenomenon, which is technologically important for potential device applications. However, most previous relevant studies only focused on the creation and characterization of the spin-polarized 2DEG. To push forward the device applications, the control of spin-polarized 2DEG by electric field is an important step. Here, a model system based on antiferromagnetic and ferroelectric perovskites, i.e., YTiO3/PbTiO3 superlattice, is designed to manipulate the spin-polarized 2DEG. By switching the direction of polarization, the spin-polarized 2DEG can be effectively tuned for both symmetric interfaces and asymmetric polar interfaces.

5 pages, 4 figures

References in corpus (12)

• Magnetic effects at the interface between nonmagnetic oxides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Orbital Physics in the Perovskite Ti Oxides
• Carrier-controlled ferromagnetism in SrTiO3
• Gate-tunable band structure of the LaAlO${}_3$-SrTiO${}_3$ interface
• Giant tunability of the two-dimensional electron gas at the interface of gamma-Al2O3/SrTiO3
• Inversion of ferrimagnetic magnetization by ferroelectric switching via a novel magnetoelectric coupling
• Anomalous orbital structure in a spinel-perovskite interface $\gamma$-Al${}_2$O${}_3$/SrTiO${}_3$
• Charge transfer and hybrid ferroelectricity in (YFeO${}_3$)${}_n$/(YTiO${}_3$)${}_n$ magnetic superlattices
• Two-dimensional electron system at the magnetically tunable EuO/SrTiO${}_3$ interface
• First-principles study of PbTiO${}_3$ under uniaxial strains and stresses
• Strain-engineered A-type antiferromagnetic order in YTiO${}_3$: a first-principles calculation

Cited by in corpus (2)

• Two-photon decay of fully-charmed tetraquarks from light-by-light scattering at the LHC
• Magnetic transition and spin-polarized two-dimensional electron gas controlled by polarization switching in strained CaMnO${}_3$/BaTiO${}_3$ slabs