Thermally driven resistive switching in a charge density wave compound

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-09-05 DOI:10.1063/5.0218725

Malathi Nagaraja, Ullattuparambil Anagha, Saswat Subhankar, Rajeev N. Kini

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引用次数: 0

Abstract

This study delves into the nonlinear transport phenomena exhibited by the telephone number compound Sr14Cu24O41 (SCO), shedding light on the underlying mechanisms driving resistive switching behavior. Through a comprehensive investigation utilizing various measurement techniques, including continuous and pulsed I–V sweeps, terahertz time-domain spectroscopy, and numerical simulations, we unravel the intricate interplay between charge density wave (CDW) dynamics and Joule heating. Our findings reveal that while CDW-related effects contribute to the nonlinear conductivity observed in SCO at moderate electric fields, Joule heating emerges as the primary driving force behind the observed negative differential resistance and hysteresis at high electric fields/current densities. This conclusion is corroborated by the disappearance of nonlinear behavior under pulsed excitation, as well as the agreement between the numerical simulations and the experimental observations. Simulations underscore the pivotal role of Joule heating in inducing resistive switching. These insights deepen our understanding of the complex interplay between CDW physics and thermal effects in correlated electron systems, offering avenues for the design and optimization of functional electronic devices.

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电荷密度波化合物中的热驱动电阻开关

本研究深入探讨了电话号码化合物 Sr14Cu24O41 (SCO) 的非线性传输现象，揭示了驱动电阻开关行为的基本机制。通过利用各种测量技术（包括连续和脉冲 I-V 扫描、太赫兹时域光谱和数值模拟）进行全面研究，我们揭示了电荷密度波 (CDW) 动态和焦耳热之间错综复杂的相互作用。我们的研究结果表明，虽然与电荷密度波相关的效应有助于在中等电场条件下观察到 SCO 的非线性传导性，但焦耳加热却是在高电场/电流密度条件下观察到的负差分电阻和磁滞现象背后的主要驱动力。脉冲激励下非线性行为的消失以及数值模拟与实验观察之间的一致性都证实了这一结论。模拟强调了焦耳加热在诱导电阻开关中的关键作用。这些见解加深了我们对相关电子系统中 CDW 物理和热效应之间复杂相互作用的理解，为功能电子器件的设计和优化提供了途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.