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arXiv 1002.0717cond-mat.str-el
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自旋为1/2的海森堡链与(非)磁性杂质耦合时的热输运

Thermal transport in a spin-1/2 Heisenberg chain coupled to a (non) magnetic impurity

A. Metavitsiadis, X. Zotos, O. S. Barišić, P. Prelovšek

摘要:

研究了(非)磁性杂质对自旋为1/2的海森堡链模型热输运的影响。这个独特的系统允许探测近藤型现象的原型强相关系统。利用数值对角化技术,我们研究了频率依赖的热导率与系统尺寸和主机杂质耦合强度的标度以及对温度的依赖性。我们特别专注于分析切割愈合的薄弱环节或磁性杂质的主机链通过近藤样筛选的温度降低。

英文摘要:

We explore the effect of a (non) magnetic impurity on the thermal transport of the spin-1/2 Heisenberg chain model. This unique system allows to probe Kondo-type phenomena in a prototype strongly correlated system. Using numerical diagonalization techniques we study the scaling of the frequency dependent thermal conductivity with system size and host-impurity coupling strength as well as the dependence on temperature. We focus in particular on the analysis of cutting-healing of weak links or a magnetic impurity by the host chain via Kondo-like screening as the temperature is lowered.

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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