How Ice enables Superconductivity in NaₓCoO₂.yH₂O by melting charge order: Possibility of novel Electric Field Effects
Baskaran, G.
Original · EN
Charge ordering in doped planes near the commensurate fillings x = 1/4 and 1/3 are considered for Naₓ CoO₂.yH₂O and suggested to be competitors to superconductivity, leading to the experimentally seen narrow superconducting dome bounded by commensurate doping: 1/4<x< 1/3. Intercalated hydrogen bonded H₂O network, by its enhanced dielectric constant, screen and frustrate local charge order condensation energy and replace a generic `charge glass order' by superconductivity in the dome. An access to superconductivity and charge order, available through the new water channel, is used to predict novel effects such as `Electrical Modulation of Superconductivity' and `Electroresistance Effect'.
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