EFFECT OF IMPURITY DOPING ON TC OF 123 SUPERCONDUCTORS

被引：0

作者：

SINGH, RK ^{[1
]}

VARSHNEY, D ^{[1
]}

DUBEY, V ^{[1
]}

GAUR, NK ^{[1
]}

机构：

[1] DEVI AHILYA UNIV,SCH PHYS,INDORE 452001,INDIA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷

关键词：

123; SUPERCONDUCTORS; HIGH TEMPERATURE SUPERCONDUCTIVITY; PLASMONS; PHONONS; ELECTRON-PHONON COUPLING;

D O I：

10.7567/JJAPS.32S3.346

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the effect of substitution of magnetic impurities for copper in YBa2Cu3-xMxO7 (M = Fe, Co) superconductors by developing a Fourier transformed effective potential (FTEP), which involves the, influence of two dimensional (2D) acoustic phonons and plasmons. We have demonstrated that 2D acoustic plasmons have introduced 20-25% enhancement over the phonon contribution to the transition temperature (T(C)) at various compositions (x). Further, we have found that the increase in the values of the plasmon coupling parameter (lambda(pl) = 0.0 to 0.5) enhances T(C) from 70 to 300 K. These achievements clearly indicates that the inclusion of the effect of 2D acoustic plasmons is essential for proper description of the mechanism of high T(C) superconductivity.

引用

页码：346 / 347

页数：2

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