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摘要翻译：
本文用规范协变Keldysh形式研究了电场E作用下关联绝缘体中金属-绝缘体跃迁的非平衡开关现象。由于阻性电流I的反馈效应，这是一个具有I-V特性滞后的一级跃迁，具有比齐纳击穿弱得多的低阈值电场(\sim 10^4 Vcm^-1}）。研究还发现，由杂质和缺陷引入的局域中隙态作为热点，选择性地发生共振隧穿，导致导电丝路径，降低了开关功能的能量消耗。
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英文标题：
《Field-induced metal-insulator transition and switching phenomenon in
correlated insulators》
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作者：
Naoyuki Sugimoto, Shigeki Onoda, Naoto Nagaosa
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最新提交年份：
2008
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分类信息：
一级分类：Physics 物理学
二级分类：Other Condensed Matter 其他凝聚态物质
分类描述：Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
We study the nonequilibrium switching phenomenon associated with the metal-insulator transition under electric field E in correlated insulator by a gauge-covariant Keldysh formalism. Due to the feedback effect of the resistive current I, this occurs as a first-order transition with a hysteresis of I-V characteristics having a lower threshold electric field (\sim 10^4 Vcm^{-1}) much weaker than that for the Zener breakdown. It is also found that the localized mid-gap states introduced by impurities and defects act as hot spots across which the resonant tunneling occurs selectively, which leads to the conductive filamentary paths and reduces the energy cost of the switching function.
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PDF链接：
https://arxiv.org/pdf/712.139
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