Interplay between spin frustration and magnetism in the exactly solved two-leg mixed spin ladder

Qi Yan^{1, †,}, Lv Song-Wei¹, Du An², Yu Nai-sen^{1, ‡,}

Temperature dependence of specific heat for typical rung couplings (a) J_⊥ = 1.0 and (b) J_⊥ = 2.2 under several different magnetic fields.