Spin glass behavior in frustrated quantum spin system CuAl2O4 with a possible orbital liquid state

R. Nirmala, Kwang-Hyun Jang, Hasung Sim +10

CuAl2O4 is a normal spinel oxide having quantum spin, S=1/2 for Cu2+. It is a rather unique feature that the Cu2+ ions of CuAl2O4 sit at a tetrahedral position, not like the usual…