OCCURRENCE OF MAXIMUM TC AT AN OPTIMAL CARRIER CONCENTRATION IN SUPERCONDUCTING BISMUTH AND THALLIUM CUPRATES

被引：21

作者：

SOMASUNDARAM, P

VIJAYARAGHAVAN, R

NAGARAJAN, R

SESHADRI, R

UMARJI, AM

RAO, CNR

机构：

[1] INDIAN INST SCI,SOLID STATE & STRUCT CHEM UNIT,BANGALORE 560012,KARNATAKA,INDIA

[2] INDIAN INST SCI,CTR MAT RES,BANGALORE 560012,KARNATAKA,INDIA

来源：

APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 05期

关键词：

D O I：

10.1063/1.103296

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The superconducting transition temperatures in Bi2Ca 1-xLnxSr2Cu2O8+δ, TlCa1-xLnxSr2Cu2O 6+δ, and Tl0.8Ca1-xLnxBa 2Cu23O6+δ (Ln=Y or rare earth) vary with composition and show a maximum at a specific value of x or δ. This observation suggests that an optimal carrier concentration is required to attain maximum Tc in such cuprates which seem to be two-band systems.

引用

页码：487 / 489

页数：3

共 7 条

[1] ABSORPTION OF ELECTROMAGNETIC-RADIATION BY SUPERCONDUCTING YBA2CU3O7 - AN OXYGEN-INDUCED PHENOMENON [J].