Volume 533, Issue 3 2000507
Feature Article

Multiple Nonvolatile Resistance States Tuned by Electric Pulses in the Hysteresis Temperature Range of 1T-TaS2

Yongchang Ma

Corresponding Author

Yongchang Ma

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384 China

Tianjin Key Lab for Photoelectric Materials and Devices, Tianjin, 300384 China

E-mail: [email protected]

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Dong Wu

Dong Wu

Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808 China

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Yajun Li

Yajun Li

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Rui Chen

Rui Chen

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Cuimin Lu

Cuimin Lu

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384 China

Tianjin Key Lab for Photoelectric Materials and Devices, Tianjin, 300384 China

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First published: 20 January 2021
Citations: 2

Abstract

Compared with systematically investigated resistance switching, nonvolatile multi-level memristors are highly desired due to their stochastic or analog ability for artificial intelligence. Here, electric-pulses-induced responses of 1T-TaS2 crystals in hysteresis temperature range are reported. These investigations clearly show that the resistance of the system can be precisely tuned by electric pulses (∼100 V cm−1), forming multiple nonvolatile states in less than 200 ns. The origin of these states and the occurrence of the obstinate triclinic phase activated by pulses are discussed and simulated, implying the rearrangements of the textures composed of commensurate charged-density-wave domains separated by discommensurabilities. The multiple nonvolatile resistance states activated conveniently by electric pulses may shed light on the potential applications of artificial synapse devices.

Conflict of Interest

The authors declare no conflict of interest.

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