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arXiv 1602.01945cond-mat.str-el
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量子Kagome反铁磁体自旋液体态的不稳定性

Instabilities of Spin-Liquid States in a Quantum Kagome Antiferromagnet

M. Gomilsek, M. Klanjsek, M. Pregelj, F. C. Coomer, H. Luetkens, O. Zaharko, T. Fennell, Y. Li, Q. M. Zhang, A. Zorko

摘要:

由于几何挫折而产生的自旋液体的涌现行为使它们成为一种有趣的物质状态。我们表明,在量子kagome反铁磁体ZnCu $_3$(OH)$_6$ SO $_4$中存在几种不同的相关但波动的状态。通过结合互补的本地探测技术与中子散射,我们发现了一个交叉从临界制度到一个无间隙的自旋液相随着温度的降低。后一相的额外非常规不稳定性导致在最低温度下稳定的第二种不同的自旋液体状态。我们将这种复杂的行为作为不同受抑量子磁体的共同特征。

英文摘要:

The emergent behavior of spin liquids that are born out of geometrical frustration makes them an intriguing state of matter. We show that in the quantum kagome antiferromagnet ZnCu$_3$(OH)$_6$SO$_4$ several different correlated, yet fluctuating states exist. By combining complementary local-probe techniques with neutron scattering, we discover a crossover from a critical regime into a gapless spin-liquid phase with decreasing temperature. An additional unconventional instability of the latter phase leads to a second, distinct spin-liquid state that is stabilized at the lowest temperatures. We advance such complex behavior as a feature common to different frustrated quantum magnets.

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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