Vanishing Density of States in Weakly Disordered Weyl Semimetals.
Vanishing Density of States in Weakly Disordered Weyl Semimetals.
复制标题
弱无序外尔半金属中的消失态密度。
DOI：
10.1103/physrevlett.121.215301
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发表时间：
2018
影响因子：
8.6
通讯作者：
["M. Buchhold
中科院分区：
文献类型：
--
作者：
["M. Buchhold
干净外尔半金属的布里渊区包含态密度（DOS）消失的点。以前的工作表明，低于一定的临界浓度的杂质，这一特点是保留，包括在存在的障碍。这一结果因忽略了可能束缚量子态从而产生有限态的罕见无序涨落而受到批评。我们在这里表明，尽管它们的存在，这些国家是如此脆弱，他们的贡献有效地消失时，平均超过连续的无序分布。这意味着节点的完整性仍然受到弱无序的保护。
The Brillouin zone of the clean Weyl semimetal contains points at which the density of states (DOS) vanishes. Previous work suggested that below a certain critical concentration of impurities this feature is preserved including in the presence of disorder. This result got criticized for its neglect of rare disorder fluctuations which might bind quantum states and hence generate a finite DOS. We here show that in spite of their existence these states are so fragile that their contribution effectively vanishes when averaged over continuous disorder distributions. This means that the integrity of the nodal points remains protected for weak disorder.
影响因子：
8.6
作者：
Sbierski, Bjoern;Pohl, Gregor;Brouwer, Piet W.
通讯作者：
Brouwer, Piet W.