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arXiv 1301.3261cond-mat.str-el
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kagome上自旋为1/2的海森堡反铁磁体:含费米子自旋的$Z_2$自旋液体

Spin-1/2 Heisenberg antiferromanget on kagome: a $Z_2$ spin liquid with fermionic spinons

Zhihao Hao, Oleg Tchernyshyov

摘要:

受最近对kagome上自旋为1/2的海森堡反铁磁体的数值和实验研究的启发,我们建立了一个费米子自旋子的多体模型[Phys. Rev. Lett. 103,187203(2009)]。在S=0通道中,自旋子与突现的U(1)规范场相互作用,并受到强烈的短程吸引。该模型的基态一般为$Z_2$液体。我们计算的边缘的两个自旋连续和比较的理论从费米子方法的海森堡模型。

英文摘要:

Motivated by recent numerical and experimental studies of the spin-1/2 Heisenberg antiferromagnet on kagome, we formulate a many-body model for fermionic spinons introduced by us earlier [Phys. Rev. Lett. 103, 187203 (2009)]. The spinons interact with an emergent U(1) gauge field and experience strong short-range attraction in the S=0 channel. The ground state of the model is generically a $Z_2$ liquid. We calculate the edge of the two-spinon continuum and compare the theory to the slave-fermion approach to the Heisenberg model.

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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