Evidence of resistive switching into a dynamical state in antiferromagnetic iridates
KAUST Grant NumberOSR-2015-CRG4-2626
Permanent link to this recordhttp://hdl.handle.net/10754/668081
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AbstractWe investigate the electrically-driven switching between low and high resistance states in antiferromagnetic Sr3Ir2O7 single crystals. We demonstrate that the switching state at high electrical biases displays an increased noise pattern, which is indicative of a dynamical state at high biases. We employ a spectrum analyzer to characterize the noise pattern associated with the high-bias switching state and investigate the dependence of the noise spectrum on the magnitude of applied bias and magnetic field. The emergence of the noise was found to be strongly correlated with the onset of resistive switching. The noise power density displayed a 1/f2 frequency dependence with an amplitude mimicking the hysteretic behavior of the resistance switching. We argue that the observed noise spectrum could be associated with a random switching between different states at high biases and discuss various interpretations of its origin including random telegraph signal (RTS) and red noises.
CitationWilliamson, M., Shen, S., Cao, G., Zhou, J., & Tsoi, M. (2019). Evidence of resistive switching into a dynamical state in antiferromagnetic iridates. AIP Advances, 9(3), 035147. doi:10.1063/1.5080005
SponsorsThis work was supported in part by NSF grants DMR-1712101 and DMR-1122603, and by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2015-CRG4-2626.