ELECTRON-SPIN-RESONANCE IN NEW HIGH-TEMPERATURE SUPERCONDUCTORS

被引：70

作者：

SHALTIEL, D ^{[1
]}

GENOSSAR, J ^{[1
]}

GRAYEVSKY, A ^{[1
]}

KALMAN, ZH ^{[1
]}

FISHER, B ^{[1
]}

KAPLAN, N ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,HAIFA,ISRAEL

来源：

SOLID STATE COMMUNICATIONS | 1987年 / 63卷 / 11期

关键词：

ELECTRIC CONDUCTIVITY - Measurements - MAGNETIC PROPERTIES - Measurements - SPECTROSCOPY; ELECTRON;

D O I：

10.1016/0038-1098(87)90645-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on ESR experiments on the 90K superconductor YBa//2 Cu//3 O//9//-//y. We observed the spectrum at X band as function of temperature down to 10K. At room temperature a weak line was observed which, on cooling, disappears around 60K. The striking result is the appearance of a broad Dysonian line below about 55K whose intensity grows exponentially with decreasing temperature. In samples doped with 1% of Gd the room temperature Gd line is split by the crystal field and narrowed by the Koringa mechanism. It again disappears at about 60K. Below 55K the spectrum is similar to that observed in the undoped sample. Some tentative interpretation regarding the magnetic behaviour in the superconducting state is offered.

引用

页码：987 / 990

页数：4

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