Exposing the spin glass ground state of the non-superconducting La$_{2-x}$Sr$_x$Cu$_{1-y}$Zn$_{y}$O$_4$ high-$T_c$ oxide

Details Exposing the spin glass ground state of the non-superconducting La$_{2-x}$Sr$_x$Cu$_{1-y}$Zn$_{y}$O$_4$ high-$T_c$ oxide Exposing the spin glass ground state of the non-superconducting La$_{2-x}$Sr$_x$Cu$_{1-y}$Zn$_{y}$O$_4$ high-$T_c$ oxide

2003-07-16

arxiv.org/abs/cond-mat/0307392v2

Phys. Rev. B 69, 144510 (2004)

Physics

Condensed Matter

Superconductivity

Text, 4 figures

Scientific paper

10.1103/PhysRevB.69.144510

We have studied the spin glass behaviour of non-superconducting La$_{2-x}$Sr$_x$Cu$_{0.95}$Zn$_{0.05}$O$_4$ ($x=0.10-0.22$). As in the superconducting analogues of these samples the spin glass transition temperature $T_g$ decreases with increasing $x$, and vanishes at $x=0.19$. A local enhancement in $T_g$ at $x=0.12$ is also observed and attributed to stripe ordering. The disappearance of $T_g$ for $x\geq0.19$ is discussed in terms of a quantum phase transition.

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