关于囚禁胶体、钉扎涡和自旋冰的等价性
On the Equivalence of Trapped Colloids, Pinned Vortices, and Spin Ice
摘要：
我们研究了最近报道的纳米结构超导体中的钉扎涡旋或光阱中的胶体与自旋冰材料之间的类比。两个模型的挫折，一个描述胶体和漩涡，另一个描述自旋冰，本质上是不同的。然而，它们的有效能量通过与拓扑荷相关联的涌现场的贡献而变得相同。这种等价性扩展到冰流形的局部低能动力学，但在混合配位晶格中，由于子晶格之间的拓扑电荷转移，这种等价性被打破。
英文摘要：
We investigate the recently reported analogies between pinned vortices in nano-structured superconductors or colloids in optical traps, and spin ice materials. The frustration of the two models, one describing colloids and vortices, the other describing spin ice, differs essentially. However, their effective energetics is made identical by the contribution of an emergent field associated to a topological charge. This equivalence extends to the local low-energy dynamics of the ice manifold, yet breaks down in lattices of mixed coordination, because of topological charge transfer between sub-latices.
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