论文标题
具有随机杂质的三维狄拉克半法的普遍性的崩溃
Breakdown of universality in three-dimensional Dirac semimetals with random impurities
论文作者
论文摘要
Dirac-Weyl半学是物质的独特三维（3D）阶段，无间隙电子和新型的电动力特性，被认为对弱扰动是可靠的。在这里，我们揭示了疾病统计数据和杂质多样性对3D半学中不可压缩电子的稳定性的关键影响。为了关注罕见杂质构型所起的关键作用，我们表明，在存在稀释的随机潜在井中，低能共振的丰度endows endows endows endows的稀有局部零能量模式具有统计学意义，从而提高了状态的淋巴结密度。这里报道的强烈的非扰动效应即使在最低的杂质密度下，也将3D Dirac-Weyl半学转换为可压缩的金属。我们的分析结果通过高分辨率的实际空间模拟在记录的3D晶格中得到了验证，最高可达536 000 000轨道。
Dirac-Weyl semimetals are unique three-dimensional (3D) phases of matter with gapless electrons and novel electrodynamic properties believed to be robust against weak perturbations. Here, we unveil the crucial influence of the disorder statistics and impurity diversity in the stability of incompressible electrons in 3D semimetals. Focusing on the critical role played by rare impurity configurations, we show that the abundance of low-energy resonances in the presence of diluted random potential wells endows rare localized zero-energy modes with statistical significance, thus lifting the nodal density of states. The strong nonperturbative effect here reported converts the 3D Dirac-Weyl semimetal into a compressible metal even at the lowest impurity densities. Our analytical results are validated by high-resolution real-space simulations in record-large 3D lattices with up to 536 000 000 orbitals.
