arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.06351cond-mat.str-elcond-mat.mtrl-sci
收藏

一维类Ising反铁磁体SrCo2V2O8中的自旋禁闭

Spinon Confinement in the One-Dimensional Ising-Like Antiferromagnet SrCo2V2O8

Zhe Wang, M. Schmidt, A. K. Bera, A. T. M. N. Islam, B. Lake, A. Loidl, J. Deisenhofer

摘要:

对于准一维量子自旋系统,理论预言由于链间耦合,自旋子的激发会受到限制。在这里,我们调查系统SrCo 2 V 2 O 8,实现弱耦合Ising类XXZ反铁磁链,太赫兹光谱与无外加磁场。在低温下,观察到一系列的激发,分裂在一个塞曼样的方式在一个施加的磁场。这些磁激发被确定为理论预测的自旋对激发。利用一维薛定谔方程和由弱链间耦合作用产生的线性禁闭势,可以完整地描述禁闭自旋子的层次结构。

英文摘要:

For quasi-one dimensional quantum spin systems theory predicts the occurrence of a confinement of spinon excitation due to interchain couplings. Here we investigate the system SrCo2V2O8, a realization of the weakly-coupled Ising-like XXZ antiferromagnetic chains, by terahertz spectroscopy with and without applied magnetic field. At low temperatures a series of excitations is observed, which split in a Zeeman-like fashion in an applied magnetic field. These magnetic excitations are identified as the theoretically predicted spinon-pair excitations. Using a one dimensional Schrödinger equation with a linear confinement potential imposed by weak interchain couplings, the hierarchy of the confined spinons can be fully described.

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。

↑