Plasma-Like Negative Capacitance in Nano-Colloids

2; (2) Lawrence Berkeley National Laboratory; 3) ((1) Department of Physics; (3) Hong Kong University of Science; Berkeley; California; C. W. Chu (1; F. Chen (1); Hong Kong); Houston

arxiv: cond-mat/0612160 · v1 · submitted 2006-12-06 · ❄️ cond-mat.mtrl-sci

Plasma-Like Negative Capacitance in Nano-Colloids

J. Shulman (1) , S. Tsui (1) , F. Chen (1) , Y. Y. Xue (1) , C. W. Chu (1 , 2 , 3) ((1) Department of Physics , TCSUH

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University of Houston Houston Texas (2) Lawrence Berkeley National Laboratory Berkeley California (3) Hong Kong University of Science Technology Hong Kong)

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keywords capacitancenegativebeenbehaviorbroadcollectiveconditionsconsistent

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A negative capacitance has been observed in a nano-colloid between 0.1 and 10^-5 Hz. The response is linear over a broad range of conditions. The low-omega dispersions of both the resistance and capacitance are consistent with the free-carrier plasma model, while the transient behavior demonstrates an unusual energy storage mechanism. A collective excitation, therefore, is suggested.

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Plasma-Like Negative Capacitance in Nano-Colloids

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