BaCu2Si2O7磁各向异性：理论与反亚磁共振
强关联电子
2016-08-31 v1
摘要
presented of antiferromagnetic resonance (AFMR) of BaCu2Si2O7 and a microscopic theory of the magnetic anisotropy of spin 1/2 chain compounds with folded CuO3 geometry being in good agreement with the available data are presented. The AFMR studies at 4.2 K show the existence of two gaps (40 and 76 GHz) at zero magnetic field and of two spin re-orientation transitions for H||c. The microscopic origin of the two gaps is shown to be Hund's rule coupling which leads to a "residual anisotropy" beyond the compensation of the Dzyaloshinskii-Moriya term by the symmetric anisotropy which would be valid without Hund's coupling.
引用
@article{arxiv.cond-mat/0206151,
title = {Magnetic anisotropy of BaCu2Si2O7: theory and antiferromagnetic resonance},
author = {R. Hayn and V. A. Pashchenko and A. Stepanov and T. Masuda and K. Uchinokura},
journal= {arXiv preprint arXiv:cond-mat/0206151},
year = {2016}
}
备注
4 pages, 3 figures