Schwinger-boson approach to anisotropy ferrimagnetic chain with bond alternation

• 作者: 李殷翔 陈斌
• 来源期刊: 中国物理B（英文版）
• 关键词: Schwinger-boson approach bond alternation X X Z anisotropy ferrimagnetic spin chain
• 年，卷（期）: 2015,（2）
• 页码范围: 027502-1-027502-5
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/2/027502

摘要

We use the Schwinger-boson approach to study the anisotropy ferrimagnetic spin-(1/2,1) chain with bond alternation. Based on the effect of bond alternationδ, we obtain energy gap, free energy, and specific heat, respectively. The specific heat with larger bond alternation (δ >0.7) displays a peak at low temperature. Based on the effect of X X Z anisotropy parameter?, we present excited spectrums, free energy, and specific heat, respectively.