ar X iv : c on d - m at / 0 20 24 28 v 1 [ co nd - m at . s of t ] 2 5 Fe b 20 02 Charge Fluctuations and Counterion Condensation
نویسندگان
چکیده
We predict a condensation phenomenon in an overall neutral system, consisting of a single charged plate and its oppositely charged counterions. Based on the " two-fluid " model, in which the counterions are divided into a " free " and a " condensed " fraction, we argue that for high surface charge, fluctuations can lead to a phase transition in which a large fraction of counterions is condensed. Furthermore, we show that depending on the valence, the condensation is either a first-order or a smooth transition.
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