Electronic and magnetic stability in correlated transportations of rare-earth nickelate perovskites

Although the thermistor and metal to insulator transition bi-functionalities were discovered for rareearth nickelates (RENiO3), the electronic stability in their correlated transports under impulse voltage or magnetic field remain as open questions. Herein, we demonstrate the thermistor transportations of the electron correlated rare-earth nickelates under impulse direct current voltage and in magnetic environment. The insulating phase of RENiO3 shows zero crossing linear I-V characters, indicating their stable electronic resistance is independent of the imparted voltage up to 10 V and pulse width down to 1 mu s, in spite of their sensitive electronic structures to polarizations. In addition, the high electronic stability associated with the thermistor transportation of RENiO3 is also demonstrated in magnetic fields up to 9 T (i.e., MR< 0.2%). The high electronic stability further paves the way to applying RENiO3 as a broad temperature range thermistor in temperature sensing or circuit protections for correlated electronics. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.

Automated summary

The study demonstrates that rare-earth nickelates exhibit good thermistor transportations and high electronic stability in correlated transports under impulse direct current voltage and in magnetic environment.