Probing Quantum Confinement and Electronic Structure at Polar Oxide Interfaces.

ABSTRACT: Polar discontinuities occurring at interfaces between two materials constitute both a challenge and an opportunity in the study and application of a variety of devices. In order to cure the large electric field occurring in such structures, a reconfiguration of the charge landscape sets in at the interface via chemical modifications, adsorbates, or charge transfer. In the latter case, one may expect a local electronic doping of one material: one example is the two-dimensional electron liquid (2DEL) appearing in SrTiO₃ once covered by a polar LaAlO₃ layer. Here, it is shown that tuning the formal polarization of a (La,Al)_1-x (Sr,Ti) _x O₃ (LASTO:x) overlayer modifies the quantum confinement of the 2DEL in

SUBMITTER: Li D 

PROVIDER: S-EPMC6097152 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature