OBSERVATION OF MAGNETIC ORDER IN THE DOUBLE-LAYER SYSTEM LA2MCU2O6+DELTA(M=CA,SR)

被引：11

作者：

ANSALDO, EJ

NIEDERMAYER, C

GLUCKLER, H

STRONACH, CE

RISEMAN, TM

NOAKES, DR

OBRADORS, X

FUERTES, A

NAVARRO, JM

GOMEZ, P

CASAN, N

MARTINEZ, B

PEREZ, F

RODRIGUEZCARVAJAL, J

CARY, RS

CHOW, K

机构：

[1] UNIV BRITISH COLUMBIA,TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

[2] UNIV CONSTANCE,W-7750 CONSTANCE,GERMANY

[3] VIRGINIA STATE UNIV,PETERSBURG,VA 23803

[4] BRANDON UNIV,BRANDON R7A 6A9,MANITOBA,CANADA

[5] CSIC,INST CIENCIA MAT,E-08028 BARCELONA,SPAIN

[6] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.46.3084

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the spin rotation and depolarization of implanted positive muons have revealed that La2SrCu2O6+delta, La2CaCu2O6+delta, and La1.9Y0.1CaCu2O6+delta, members of the double-layer perovskite family La2MCu2O6+delta (M=Ca,Sr), display magnetic ordering similar to that of La2-xSrxCuO4-y and YBa2Cu3Ox Their magnetic order parameters are remarkably close to those of the other layered cuprates. A superconducting minority phase has been detected in La2CaCu2O6+delta (delta greater-than-or-equal-to 0.02), with onset at approximately 45 K and accompanied by a change in the muon-spin-precession signals from the majority antiferromagnetic phase, phenomena absent in La2SrCu2O6+delta. This behavior was attributed to mobility and local clustering of intercalated oxygen excess in the layer between the CuO2 planes.

引用

页码：3084 / 3088

页数：5

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