Asymmetrical two-dimensional electron gas in superlattices consisting of insulating GdTiO3 and BaTiO3

Free-electron gas at charged domain walls in insulating BaTiO3

Hetero interfaces between metal-oxides display pronounced phenomena such as semiconductor-metal transitions, magnetoresistance, the quantum hall effect and superconductivity. Similar effects at compositionally homogeneous interfaces including ferroic domain walls are expected. Unlike hetero interfaces, domain walls can be created, displaced, annihilated and recreated inside a functioning device...

Highly confined spin-polarized two-dimensional electron gas in SrTiO3/SrRuO3 superlattices.

We report first-principles characterization of the structural and electronic properties of (SrTiO3)5/(SrRuO3)1 superlattices. We show that the system exhibits a spin-polarized two-dimensional electron gas, extremely confined to the 4d orbitals of Ru in the SrRuO3 layer. Every interface in the superlattice behaves as a minority-spin half-metal ferromagnet, with a magnetic moment of μ=2.0μ(B)/SrR...

Towards spin-polarized two-dimensional electron gas at a surface of an antiferromagnetic insulating oxide

Rohan Mishra,1,2,3,* Young-Min Kim,2,4,5 Qian He,2 Xing Huang,3 Seong Keun Kim,6,7 Michael A. Susner,2 Anand Bhattacharya,6,8 Dillon D. Fong,6 Sokrates T. Pantelides,1,2 and Albina Y. Borisevich2 1Deparment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3D...

Two-dimensional electron gas near full polarization

We establish the consistency of the Fermi liquid description and find a relation between the Fermi liquid constants for a two-dimensional electron system near the point of full polarization due to a parallel magnetic field H. Our results enable us to predict connections between different thermodynamic properties of the system. In particular, we find that near the point of full polarization Hc ,...

Two dimensional electron gas at oxide interfaces