t-J模型中的双极化子与纵向和横向量子晶格振动的耦合
Bipolaron in the t-J model coupled to longitudinal and transverse quantum lattice vibrations
摘要：
在有限的泛函空间中，利用精确对角化方法，研究了t-J模型中两种不同极化的量子氧振动对束缚磁双极化子空间对称性的影响.二次电子声子耦合到横向极化稳定d波对称性。磁背景的存在对于d波双极化子态的形成是必不可少的。随着线性电子声子耦合到纵向极化的增加，d波双极化子态的对称性改变为p波。双极化子产生大的各向异性有效质量。
英文摘要：
We explore the influence of two different polarizations of quantum oxygen vibrations on the spacial symmetry of the bound magnetic bipolaron in the context of the t-J model by using exact diagonalization within a limited functional space. Quadratic electron phonon coupling to transverse polarization stabilizes d-wave symmetry. The existence of a magnetic background is essential for the formation of a d-wave bipolaron state. With increasing linear electron phonon coupling to longitudinal polarization the symmetry of a d-wave bipolaron state changes to a p-wave. Bipolaron develops a large anisotropic effective mass.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
