A facile planar memristor based on CsBi4Te6 with asymmetric metal contacts

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-04-15 DOI:10.1016/j.cap.2025.04.003

Chayuan Zeng , liwen Fan , Sen Zhang , Jiasheng Wang , Tianqi Cheng , Wanqian Wang , Fei Xie , Wei Luo , Gang Peng

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Abstract

A facile planar memristor was fabricated by choosing CsBi₄Te₆ (CBT) contacted with handmade asymmetric electrodes for the first time. Utilizing simple methods such as dispensing silver (Ag) paste and pressing indium (In) significantly streamline the electrode fabrication process. The planar memristor displays stable bipolar resistive switching (RS) capabilities over 100 cycles. the resistance ratio (R_OFF/R_ON) surpasses 10³, and its retention time at ambient temperature exceeds 10⁴ s. Comparative experiments reveal that the memristor behavior stems from the interface between CBT and Ag, with the possibility of a thin functional layer forming at the contact interface. Furthermore, characterizations at lower temperatures confirm the occurrence of carrier tunneling at the interface, which offers a fresh perspective and insight into the memristor.

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一种基于非对称金属触点CsBi4Te6的简易平面记忆电阻

首次选用与手工非对称电极接触的CsBi4Te6 （CBT）制备了一种简易平面忆阻器。使用简单的方法，如点银（Ag）膏和压铟（In）显着简化了电极制造过程。该平面忆阻器在100个周期内显示稳定的双极电阻开关（RS）能力。电阻比（ROFF/RON）大于103，在室温下保持时间大于104 s。对比实验表明，忆阻器的行为源于CBT与Ag之间的界面，并有可能在接触界面形成薄功能层。此外，在较低温度下的表征证实了界面上载流子隧穿的存在，这为记忆电阻器提供了一个新的视角和见解。

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.