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

C. Panagopoulos; A. P. Petrovic; A. D. Hillier; J. L. Tallon; C. A. Scott; B. D. Rainford

doi:10.1103/PhysRevB.69.144510

paper

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

arXiv:cond-mat/0307392 · doi:10.1103/PhysRevB.69.144510

Abstract

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 $x \geq 0.19$ is discussed in terms of a quantum phase transition.

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Exposing the spin glass ground state of the non-superconducting La2−x​Srx​Cu1−y​Zny​O4​ high-Tc​ oxide

Abstract

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