三维晶体中的演生粒子百科

分类： 物理学 >> 凝聚态:电子结构、电、磁和光学性质 分类： 物理学 >> 交叉学科物理及相关领域的科学与技术 提交时间： 2021-02-02

余智明 张泽英 刘贵斌 吴维康 李小平 张闰午 杨声远 姚裕贵

摘要： The past decade has witnessed a surge of interest in exploring emergent particles in condensed matter systems. Novel particles, emerged as excitations around exotic band degeneracy points, continue to be reported in real materials and artificially engineered systems, but so far, we do not have a complete picture on all possible types of particles that can be achieved. Here, via systematic symmetry analysis and modeling, we accomplish a complete list of all possible particles in time reversal-invariant systems. This includes both spinful particles such as electron quasiparticles in solids, and spinless particles such as phonons or even excitations in electric-circuit and mechanical networks. We establish detailed correspondence between the particle, the symmetry condition, the effective model, and the topological character. This obtained encyclopedia concludes the search for novel emergent particles and provides concrete guidance to achieve them in physical systems.

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