Zn-induced magnetic order detected by μSR around in La2−xSrxCu1−yZnyO4

Abstract In order to investigate the possibility of a stripe structure recently proposed around hole density 1 8 in LaSr-214, μSR experiments were carried out for samples of x =0.105, 0.11, 0.115, 0.12, 0.125 and 0.13 with y =0 and 0.01 in La 2− x Sr x Cu 1− y Zn y O 4 . For Zn-free samples ( y =0), the highest onset temperature of muon-spin rotation was T r =9 K in x =0.115 but not observed in x =0.125 and 0.13. However, Zn-doping caused moun-spin rotation below T r =7 K in x =0.125 sample but depressed T r to about 7 K for the sample of x =0.115. This suggests the possibility that Zn-doping pins dynamical spin modulation, resulting in a static magnetic order.