Physics of ultrathin films and heterostructures of rare-earth nickelates

S Middey, J Chakhalian, P Mahadevan… - Annual Review of …, 2016 - annualreviews.org
The electronic structure of transition metal oxides featuring correlated electrons can be
rationalized within the Zaanen-Sawatzky-Allen framework. Following a brief description of …

Magnetic oxide heterostructures

A Bhattacharya, SJ May - Annual Review of Materials Research, 2014 - annualreviews.org
Complex transition metal oxides have played a central role in the study of magnetic
materials, serving as model systems for explorations of fundamental exchange interactions …

Charge disproportionation without charge transfer in the rare-earth-element nickelates as a possible mechanism for the metal-insulator transition

S Johnston, A Mukherjee, I Elfimov, M Berciu… - Physical review …, 2014 - APS
We study a model for the metal-insulator (MI) transition in the rare-earth-element nickelates
R NiO 3, based upon a negative charge transfer energy and coupling to a rocksaltlike lattice …

Fundamentals of tin iodide perovskites: a promising route to highly efficient, lead-free solar cells

A Filippetti, S Kahmann, C Caddeo, A Mattoni… - Journal of Materials …, 2021 - pubs.rsc.org
Hybrid tin-iodide perovskites are investigated as potential lead-free replacement of the lead-
iodide perovskites; however, the intrinsic operational limit of these systems has not been …

Conductivity and Local Structure of LaNiO3 Thin Films

J Fowlie, M Gibert, G Tieri, A Gloter, J Íñiguez… - Advanced …, 2017 - Wiley Online Library
A marked conductivity enhancement is reported in 6–11 unit cell LaNiO3 thin films. A
maximal conductivity is also observed in ab initio calculations for films of the same thickness …

Orbital control of noncollinear magnetic order in nickel oxide heterostructures

A Frano, E Schierle, MW Haverkort, Y Lu, M Wu… - Physical Review Letters, 2013 - APS
We have used resonant x-ray diffraction to develop a detailed description of
antiferromagnetic ordering in epitaxial superlattices based on two-unit-cell thick layers of the …

Tunable Charge and Spin Order in Thin Films and Superlattices

M Hepting, M Minola, A Frano, G Cristiani… - Physical Review Letters, 2014 - APS
We use polarized Raman scattering to probe lattice vibrations and charge ordering in 12 nm
thick, epitaxially strained PrNiO 3 films, and in superlattices of PrNiO 3 with the band …

Low electron-polar optical phonon scattering as a fundamental aspect of carrier mobility in methylammonium lead halide CH 3 NH 3 PbI 3 perovskites

A Filippetti, A Mattoni, C Caddeo, MI Saba… - Physical Chemistry …, 2016 - pubs.rsc.org
High carrier mobility is often invoked to justify the exceptionally long diffusion length in
CH3NH3PbI3 perovskites. Using a combination of an ab initio band structure and scattering …

Theory of the Magnetic and Metal-Insulator Transitions in Bulk and Layered Structures

B Lau, AJ Millis - Physical Review Letters, 2013 - APS
A slave rotor—Hartree-Fock formalism is presented for studying the properties of the pd
model describing perovskite transition metal oxides, and a flexible and efficient numerical …

Appealing perspectives of hybrid lead–iodide perovskites as thermoelectric materials

A Filippetti, C Caddeo, P Delugas… - The Journal of Physical …, 2016 - ACS Publications
The fundamental properties of lead halide perovskites, rivaling those of conventional
semiconductors, make these systems attractive not just for solar cells but also for a broader …