1. Strain-mediated electric-field control of the electronic transport properties of 5d iridate thin films of SrIrO3.
- Author
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Li, Shuang-Shuang, Zhang, Ying, Ying, Jing-Shi, Wang, Zao-Cai, Yan, Jian-Min, Gao, Guan-Yin, Ye, Mao, and Zheng, Ren-Kui
- Subjects
THIN films ,ELECTRONIC control ,ELECTRIC fields ,FERROELECTRIC thin films ,PHASE transitions ,MAGNETORESISTANCE ,PHOTOVOLTAIC effect - Abstract
SrIrO
3 (SIO) thin films were epitaxially grown on (001)-oriented 0.7Pb(Mg1/3 Nb2/3 )O3 -0.3PbTiO3 (PMN-PT) single-crystal substrates. Upon applying electric fields to the piezoelectric PMN-PT along the thickness direction, the electronic transport properties of SIO films can be in situ tuned and modulated by non-180° ferroelectric domain rotation-induced strain, piezoelectric strain, and rhombohedral-to-tetragonal structural phase transition-induced strain in the PMN-PT layer, respectively. Moreover, the weak negative magnetoresistance (MR) of the 60-nm SIO films could be modified by applying an electric field to the PMN-PT layer. At T = 2 K, upon the application of E = 4 kV/cm to the PMN-PT, MR at H = 9 T is reduced by 14.2% as compared to that under zero electric field, indicating in-plane compressive strain-induced suppression of the influence of quantum corrections to the conductivity in the SIO film. These results demonstrate that the electric-field controllable lattice strain is a simple approach to get insight into the strain-property relationships of 5d iridate thin films. [ABSTRACT FROM AUTHOR]- Published
- 2023
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