Abstract
We have investigated in detail dependence on p (the hole concentration per Cu) of the transport properties and T c in the excess-oxygen-doped La2−x A x CuO4+δ (A=Nd, Bi, Pr), where the phase separation of the excess oxygen is suppressed. The so-called 1/8 anomaly has been found in La1.8Nd0.2CuO4+δ. The 1/8 anomaly has become marked through the 1% substitution of Zn for Cu. The μSR measurements have revealed that the magnetic correlation develops at low temperatures below about 40 K in both Zn-free and 1% Zn-substituted samples with p=1/8 and that a long-range magnetic order is formed below 1 K in the 1% Zn-substituted sample with p=1/8. These results support the stripe-pinning model. Neither La2−x Bi x CuO4+δ nor La2−x Pr x CuO4+δ has exhibited the clear 1/8 anomaly.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
