ABSENCE OF CU2+ ELECTRON-SPIN-RESONANCE IN HIGH-TEMPERATURE SUPERCONDUCTORS AND RELATED INSULATORS UP TO 1150 K

被引：51

作者：

SIMON, P

BASSAT, JM

OSEROFF, SB

FISK, Z

CHEONG, SW

WATTIAUX, A

SCHULTZ, S

机构：

[1] SAN DIEGO STATE UNIV,DEPT PHYS,SAN DIEGO,CA 92182

[2] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

[3] AT&T BELL LABS,MURRAY HILL,NJ 07974

[4] UNIV BORDEAUX 1,CNRS,CHIM SOLIDE LAB,F-33405 TALENCE,FRANCE

[5] UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.48.4216

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

One unresolved question in the high-temperature superconductors and their copper oxide parent compounds is the absence of a Cu2+ electron-spin-resonance (ESR) signal even at temperatures well above the Neel temperature. We have extended the measurements up to 1150 K in both single crystals and ceramic pellets of La2CuO4+delta, 0 less than or similar to delta less than or similar to 0.12, and no ESR signal has been observed. Our data are not compatible with the models based only on magnetic fluctuations which predict an ESR linewidth of a few hundred Oe at such high temperatures. Other suggested explanations for the absence of a Cu2+ ESR signal are discussed.

引用

页码：4216 / 4218

页数：3

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