Lattice polarization effects on electron-gas charge densities in ionic superlattices
D. R. Hamann, D. A. Muller, H. Y. Hwang
Abstract
The atomic-level control achievable in artificially-structured oxide superlattices provides a unique opportunity to explore interface phases of matter including high-density 2D electron gases. Electronic-structure calculations show that the charge distribution of the 2D gas is strongly modulated by electron-phonon interactions with significant ionic polarization. Anharmonic finite-temperature effects must be included to reproduce experiment. Density functional perturbation theory is used to parameterize a simple model introduced to represent these effects and predict temperature dependencies.
Create a lesson
Related papers
Ferron polariton Hall effect: Deflecting optically rectified polarization with magnetic fields
Omer Yaniv, Dominik M. Juraschek
Band structure of two-dimensional graphene and of one-dimensional nanoribbons via variational quantum algorithms: from energies to wavefunction quality
Raúl Medrano Millán, Rodrigo Gil-Merino y Rubio, Juan Borge et al.
Aging-Improved NH3 Sensing in Polypyrrole Nanotube Chemiresistors
Arya Mohan, Olivia Kamdom, Antoine Enel et al.
Effect of molybdenum content on phase transformations during continuous heating of metastable β Ti-Mo alloys
Veronika Kočiščáková, Anna Veverková, Josef Stráský et al.
Controlling nitrogen incorporation in (Eu,Ba,Ca)TiO3-derived perovskite-type oxynitrides through Fermi Level Engineering
Margarida Barroso, Marie Neumann, Rachele Sciotto et al.
Effect of compensation on magnetic ordering in (Ga,Mn)As
I. A. Kokurin, N. S. Averkiev