Vestigial nematicity from spin and/or charge order in the cuprates
Vestigial nematicity from spin and/or charge order in the cuprates
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DOI：
10.1103/physrevb.96.085142
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发表时间：
2017-08-28
影响因子：
3.7
通讯作者：
Kivelson, Steven A.
中科院分区：
文献类型：
--
作者：
Nie, Laimei;Maharaj, Akash V.;Kivelson, Steven A.
向列序在铜酸盐家族的各种材料中表现出来。我们提出了一个分层系统的有效场理论与无公度，纠缠的自旋和电荷密度波（SDW和CDW）的订单，其中每一个由两个组件相关的C-4旋转。使用变分法（这是准确的大N限制），我们研究的向列性的发展，从部分熔化这些密度波通过增加温度或添加淬火无序。随着温度的降低，我们首先发现到单一的非晶相的转变，但是取决于参数的范围（例如，掺杂浓度），与该相关联的最强波动反映了接近SDW或CDW阶。我们还讨论了参数的变化，可以解释214家庭和其他空穴掺杂的铜酸盐之间的SDW-CDW相互作用的差异。
Nematic order has manifested itself in a variety of materials in the cuprate family. We propose an effective field theory of a layered system with incommensurate, intertwined spin-and charge-density wave (SDW and CDW) orders, each of which consists of two components related by C-4 rotations. Using a variational method (which is exact in a large-N limit), we study the development of nematicity from partially melting those density waves by either increasing temperature or adding quenched disorder. As temperature decreases we first find a transition to a single nematic phase, but depending on the range of parameters (e.g., doping concentration) the strongest fluctuations associated with this phase reflect either proximate SDW or CDW order. We also discuss the changes in parameters that can account for the differences in the SDW-CDW interplay between the 214 family and the other hole-doped cuprates.