4.5 Article

Electrically Induced Nonthermal Memristive Switching in V2O3/Si Thin Film

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PHYSICAL REVIEW APPLIED
卷 20, 期 2, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.20.024055

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Exploring the electronic parameters contributing to the external control of conductivity of correlated systems like V2O3 is important for next-generation Mottronic devices. In this study, a resistive-switching phenomenon from the high-resistance state (HRS) to the low-resistance state is demonstrated in a V2O3 thin film by applying a dc voltage. The study reveals an electrically induced nonthermal resistive-switching effect in the V2O3 thin film.
Mott-insulator-to-metal transitions under an applied electric field are currently the subject of numerous fundamental and applied studies. Exploring the electronic parameters contributing to the external control of conductivity of correlated systems like V2O3 is an indispensable requirement for next-generation Mottronic devices. Here, we demonstrate a resistive-switching (RS) phenomenon, i.e., a flip from the high-resistance state (HRS) to the low-resistance state in a V2O3 thin film grown on Si (001) substrate by applying a dc voltage as external perturbation. The RS effect is explained in connection with the electronic structure by overcoming the electronic correlations and, in the HRS, the V2O3/Si film is realized to lie in the intermediate regime between the Mott-Hubbard and charge-transfer insulating states. Interestingly, our study reveals an electrically induced nonthermal RS effect in the V2O3/Si film in terms of different energetics like on-site Coulomb repulsion (U) and charge-transfer energy (A), which regulate the exotic properties of this metal oxide and its functionality.

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