题名

The Chemical Control of High Temperature Superconductivity

作者

R. S. Liu;S. F. Hu

关键词
期刊名称

Chinese Journal of Physics

卷期/出版年月

34卷2S期(1996 / 04 / 01)

页次

302 - 309

内容语文

英文

英文摘要

In high-T, superconducting cuprates, the chemical species and composition of the hole reservoir layers are crucial to affect the hole concentration in the conducting CuO2 layers which may further result in the optimization of the superconducting transition temperature (Tc). Here, we demonstrate the effect of Tc by the variation of the chemical species in the (Pb,Cu)-0 hole reservoir layers of the Pb-based 1212-type, (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ, system (Tc~45 K). The chemical substitution by (Pb,Cd)-O (Tc~70 K) or (Pb,Hg)-0 (T~90 K) or (Pb,Tl)-O(Tc~108 K) for the hole reservoir (Pb,Cu)-0 layers in the Pb-based 1212-type system can lead to the significant enhancement of Tc from 45 K to 108 K. hloreover, in each system, the amount of chemical substitution between Ca^2+ and Y^3+ is also important to control the hole concentration in the CuO2 planes and Tc. This study indicates how ”tuning” the superconductivity may be achieved by manipulating the chemical species of the hole reservoir together with the Ca/Y ratio and provides confirmation that two part nature (charge reservoir) [M2Cun+i(Ca,Y)nO2n+2] (M = Ba or Sr) of the high-T, cuprates.

主题分类 基礎與應用科學 > 物理
被引用次数
  1. 張家豪(2017)。類沸石咪唑骨架(ZIF-8)薄膜:介面合成法之設計及氣體(二氧化碳/氮氣)分離效能之提升。國立臺灣大學化學工程學系學位論文。2017。1-75。 
  2. 楊子德(2016)。半導體雷射幫浦摻鈦藍寶石晶體光纖之可調波長雷射研究。臺灣大學光電工程學研究所學位論文。2016。1-117。