Magnetic phase diagram of lightly doped La2-xSrxCuO4 from La139 nuclear quadrupole resonance
Journal
Physical Review Letters
Journal Volume
71
Journal Issue
14
Pages
2323-2326
Date Issued
1993
Author(s)
Abstract
The magnetic phase diagram of La2-xSrxCuO4 in the antiferromagnetic regime (x≤0.02) has been derived from La139 nuclear quadrupole resonance studies from 4 to 250 K. The data demonstrate freezing of the doped holes' effective spin degrees of freedom below T(815 K)x into a spin-glass-like state which is superimposed on the antiferromagnetic background. These and previous results allow a detailed magnetic phase diagram to be constructed for x≤0.05 and reveal a distinct crossover at x0.02 in the nature of the spin-glass transition. © 1993 The American Physical Society.
Type
journal article