Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet
arxiv(2023)
摘要
Thermodynamics studies of a prototypical quasi-two-dimensional frustrated
magnet Ba_2Sn_2ZnCr_7pGa_10-7pO_22 where the magnetic Cr^3+
ions are arranged in a triangular network of bipyramids show that the magnetic
zero-point entropy for p=0.98 is 55(1)% of the entropy expected when the
Cr^3+ moments are fully disordered. Furthermore, when combined with a
previous neutron scattering study and the perimeter scaling entropy of a spin
jam, the analysis reveals that with decreasing p, i.e., doping of the
nonmagnetic Ga^3+ ions, the variation in the magnetic zero-point entropy
can be well explained by the combined effects of the zero-point entropy of the
spin jam state and that of weakly coupled orphan spins, shedding light on the
coexistence of the two types of spin states in quantum magnetism.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要