Novel phase transition in non-antiferromagnetically ordered crystals of La sub 2 Cu0 sub 4.
01 January 1988
We report the discovery of a new phase diagram in the magnetic field-temperature plane for single crystals of La sub 2 Cu0 sub 4 that show no sign of antiferromagnetic order. The phase boundary is defined by magneto-resistance and susceptibility measurements. We discuss several possibilities that may lead to the phase diagram observed.