论文标题
uru $ _2 $ si $ _2 $ _2 $：landau-ginzburg hastatic订单理论的签名
Signatures of spinorial order in URu$_2$Si$_2$: Landau-Ginzburg theory of hastatic order
论文作者
论文摘要
乌鲁$ _2 $ si $ _2 $中的隐藏订单在三十多年后仍然是一个引人注目的谜团，订单参数仍然不明。该阶段的一个有趣的建议是仓促的秩序：一种对称性破坏了重型费米液体，并具有旋转杂交，可以打破单个和双重反转对称性。 Hastatic Order是第一个旋转，而不是材料中的矢量顺序，但以前的工作尚未发现旋转性质的直接后果。在本文中，我们在Landau-Ginzburg理论中重新审视了HASTATIC提议。我们找到了两个规格不变的矢量顺序，而不是单个旋转顺序参数打破双倍的反转对称性：带有现场矩的预期复合顺序，而新的数量仅由旋转性质损坏。我们解决了波动和障碍对四方对称性破坏的影响，并解释了URU $ _2 $ si $ _2 $中没有平面矩，并预测了横向场中的新过渡。
The hidden order in URu$_2$Si$_2$ remains a compelling mystery after more than thirty years, with the order parameter still unidentified. One intriguing proposal for the phase has been hastatic order: a symmetry breaking heavy Fermi liquid with a spinorial hybridization that breaks both single and double time-reversal symmetry. Hastatic order is the first spinorial, rather than vectorial order in materials, but previous work has not yet found direct consequences of the spinorial nature. In this paper, we revisit the hastatic proposal within Landau-Ginzburg theory. Rather than a single spinorial order parameter breaking double-time-reversal symmetry, we find two gauge invariant vectorial orders: the expected composite order with on-site moments, and a new quantity capturing symmetries broken solely by the spinorial nature. We address the effect of fluctuations and disorder on the tetragonal symmetry breaking, explaining the absence of in-plane moments in URu$_2$Si$_2$ and predicting a new transition in transverse field.
