6533b821fe1ef96bd127b5f9
RESEARCH PRODUCT
Macroscopic description of the two-dimensionalLaAlO3/SrTiO3interface
Vladimir A. StephanovichVitalii DugaevVitalii K. Dugaevsubject
Materials scienceCondensed matter physicsbusiness.industryHeterojunction02 engineering and technologyFunction (mathematics)ConductivityType (model theory)021001 nanoscience & nanotechnology01 natural sciencesMetalSemiconductorSimple (abstract algebra)Phase (matter)visual_art0103 physical sciencesvisual_art.visual_art_medium010306 general physics0210 nano-technologybusinessdescription
We propose a simple analytical model to explain the possible appearance of the metallic conductivity in the two-dimensional (2D) ${\mathrm{LaAlO}}_{3}/{\mathrm{SrTiO}}_{3}$ interface. Our model considers the interface within a macroscopic approach, which is usual for semiconductor heterojunctions and is based on drift-diffusion equations. The solution of these equations allows us to obtain the positions of band edges as a function of distances from the interface. We show that for the 2D metallic conductivity to appear at the interface, the constituting substances should have the same type (either electronic or hole) of conductivity; in the opposite case the possible transition to metallic phase has a three-dimensional character. The results of our model calculations are in agreement with available experimental data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-07 | Physical Review B |