Nanostructure investigations of nonlinear differential conductance in NdNiO3 thin films
Abstract
Transport measurements on thin films of NdNiO3 reveal a crossover to a regime of pronounced nonlinear conduction below the well-known metal-insulator transition temperature. The evolution of the transport properties at temperatures well below this transition appears consistent with a gradual formation of a gap in the holelike Fermi surface of this strongly correlated system. As T is decreased below the nominal transition temperature, transport becomes increasingly non-Ohmic, with a model of Landau-Zener breakdown becoming most suited for describing I (V ) characteristics as the temperature approaches 2 K.
- Publication:
-
Physical Review B
- Pub Date:
- November 2014
- DOI:
- 10.1103/PhysRevB.90.205117
- arXiv:
- arXiv:1411.1776
- Bibcode:
- 2014PhRvB..90t5117H
- Keywords:
-
- 73.50.Fq;
- High-field and nonlinear effects;
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 18 pages, 6 figures, accepted for publication in PRB