Speed enhancement of magnetic logic-memory device by insulator-to-metal transition

Yuchen Pu, Hongming Mou, Ziyao Lu, Seeraz Nawaz, Guilin Wang, Zhigang Zhang, Yuanjun Yang, Xixiang Zhang, Xiaozhong Zhang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Complementary metal-oxide-semiconductor logic circuits used in conventional computers require frequent communication with external nonvolatile memory, causing the memory wall problem. Recently reported magnetic logic with reconfigurable logic operation and built-in nonvolatile memory can potentially bridge this gap. However, its high-frequency performance is not well studied. Here, we first perform experimental and theoretical investigation on the switching time of magnetic logic-memory devices combining magnetic units and negative differential resistance (NDR) of semiconductors. It is found that the switching time of S-type NDR (transistor circuits) in logic operations is 300 ns and determined by the transistor’s internal turn-on properties. We then propose a magnetic logic-memory device by coupling the anomalous Hall effect in magnetic materials and the insulator-to-metal transition in VO2. Our device realizes reliable output (output ratio > 1000%), a low work magnetic field (
Original languageEnglish (US)
Pages (from-to)022407
JournalApplied Physics Letters
Issue number2
StatePublished - Jul 14 2020


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