铜酸盐
超导电性
量子隧道
凝聚态物理
一般化
电荷(物理)
物理
电荷密度波
电荷密度
材料科学
量子力学
数学
数学分析
作者
Hércules Santana,E. V. L. de Mello
出处
期刊:Physical review
[American Physical Society]
日期:2023-05-23
卷期号:107 (18)
被引量:1
标识
DOI:10.1103/physrevb.107.184514
摘要
Since the discovery of cuprate superconductors, the interlayer tunneling (ILT) and Lawrence-Doniach (LD) models, which connect CuO planes by Josephson coupling, were considered the leading theoretical proposals for these materials. However, measurements of the interlayer magnetic penetration depth ${\ensuremath{\lambda}}_{c}$ yielded larger values than required by the ILT model. After the discovery of planar stripes and incommensurate charge ordering, it was also possible to consider Josephson coupling between these mesoscopic charge domains or blocks. We show that the average intralayer is larger than the interlayer coupling and is comparable with the condensation energy, leading to a superconducting transition by long-range phase order. Another consequence is that the ratio ${[{\ensuremath{\lambda}}_{c}/{\ensuremath{\lambda}}_{ab}]}^{2}$ is related to the resistivity ratio ${\ensuremath{\rho}}_{c}/{\ensuremath{\rho}}_{ab}$ near the superconducting transition temperature, in agreement with several measurements.
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