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.

中文翻译：

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电荷密度波化合物中的热驱动电阻开关


本研究深入研究了电话号码化合物 Sr14Cu24O41 （SCO） 所表现出的非线性传输现象，阐明了驱动电阻开关行为的潜在机制。通过利用各种测量技术进行全面研究，包括连续和脉冲 I-V 扫描、太赫兹时域光谱和数值模拟，我们揭示了电荷密度波 （CDW） 动力学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 CDW 相关效应有助于在中等电场下在 SCO 中观察到的非线性电导率，但焦耳热成为在高电场/电流密度下观察到的负差分电阻和磁滞的主要驱动力。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证实了这一结论。仿真强调了焦耳热在诱导电阻开关中的关键作用。这些见解加深了我们对 CDW 物理学与相关电子系统中热效应之间复杂相互作用的理解，为功能电子设备的设计和优化提供了途径。