Spin-Liquid State Study of Equilateral Triangle S=3/2 Spin Tubes Formed in CsCrF4
摘要:
Topological effects on spin frustration in equilateral triangle S = 3/2 spin tubes formed in CsCrF4 were studied by magnetic susceptibility, heat capacity [C(T)I, and electron spin resonance experiments. The experimental data show that there is no magnetic long-range order down to T = 1.3 K, and that no spin gap due to a chiral spin structure appears. Furthermore, since the C(T) curve has a T-linear component, a gapless spin-liquid ground state in one-dimensional antiferromagnets, the so-called Tomonaga-Luttinger liquid, is realized. This is characteristic of equilateral triangle spin tubes with S = half-integer.