arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.5965cond-mat.str-el
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自旋梯化合物中的电子自旋共振位移

Electron spin resonance shift in spin ladder compounds

Shunsuke C. Furuya, Pierre Bouillot, Corinna Kollath, Masaki Oshikawa, Thierry Giamarchi

摘要:

分析了自旋1/2阶梯中不同的耦合各向异性对电子自旋共振(ESR)位移的影响。将各向异性的微扰表达式与温度相关的密度矩阵重整化群(T-DMRG)短程关联计算相结合,给出了ESR顺磁位移的全温度和磁场演化.我们表明,对于精心选择的参数的ESR位移可以在原则上用于提取定量的各向异性,并作为一个例子,讨论材料$\mathrm{(C_5H_{12}N)_2CuBr_4}$(BPCB)。

英文摘要:

We analyze the effects of different coupling anisotropies in spin-1/2 ladder on the Electron Spin Resonance (ESR) shift. Combining a perturbative expression in the anisotropies with temperature dependent Density Matrix Renormalization Group (T-DMRG) computation of the short range correlations, we provide the full temperature and magnetic field evolution of the ESR paramagnetic shift. We show that for well chosen parameters the ESR shift can be in principle used to extract quantitatively the anisotropies and, as an example, discuss the material $\mathrm{(C_5H_{12}N)_2CuBr_4}$ (BPCB).

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。

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