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arXiv 1609.00484cond-mat.str-el
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三维阻挫伊辛模型中无对称破缺的自旋液体和量子相变

Spin liquid and quantum phase transition without symmetry breaking in a frustrated three-dimensional Ising model

J. Roechner, L. Balents, K. P. Schmidt

摘要:

结果表明,三维烧绿石晶格上的高阻挫横向场伊辛模型在低场库仑量子自旋液体和高场极化相之间实现了无对称破缺的一级相变.量子相变是通过比较低场和高场级数展开定量定位。此外,有趣的性质的元激发在极化阶段进行了研究。我们认为,这个模型可以通过施加机械应变的经典自旋冰材料组成的非Kramers自旋,如Ho_2Ti_2O_7实验实现。这为研究量子自旋液体物理提供了一个新的实验平台。

英文摘要:

We show that the highly frustrated transverse-field Ising model on the three-dimensional pyrochlore lattice realizes a first-order phase transition without symmetry breaking between the low-field Coulomb quantum spin liquid and the high-field polarized phase. The quantum phase transition is located quantitively by comparing low- and high-field series expansions. Furthermore, the intriguing properties of the elementary excitations in the polarized phase are investigated. We argue that this model can be achieved experimentally by applying mechanical strain to a classical spin ice material comprised of non-Kramers spins such as Ho_2Ti_2O_7. Taken together with our results, this provides a new experimental platform to study quantum spin liquid physics.

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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