How ice enables superconductivity in NaxCoO2•yH2O by melting charge order:: possibility of novel electric field effects

被引：6

作者：

Baskaran, G ^{[1
]}

机构：

[1] Inst Math Sci, Madras 600113, Tamil Nadu, India

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2005年 / 417卷 / 3-4期

关键词：

D O I：

10.1016/j.physc.2004.11.015

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Charge ordering in doped CoO2 planes near the commensurate fillings x = 1/4 and 1/3 are considered for Na-x-CoO2.yH(2)O 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'. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：150 / 156

页数：7

共 26 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].