论文标题
表面绿色的功能和Quasiparticle干扰
Surface Green's functions and quasiparticle interference in Weyl semimetals
论文作者
论文摘要
我们使用Phys中引入的确切分析技术。 Rev. B 101，115405为了恢复Weyl半度晶格模型的表面绿色功能和相应的Fermi-Arc表面状态。对于这些模型，我们使用t-matrix形式主义来计算存在杂质散射的情况下产生的准粒子干扰模式。特别是，我们考虑了物理中引入的模型。修订版B 93，041109（r）（a）和物理。莱特牧师。 119，076801（b），我们发现，与先前通过状态的关节密度和旋转依赖性散射概率获得的观察结果相比，Quasiparticle干扰特征中的ARC间散射在模型A中完全抑制，并且在模型B中很小。我们的发现表明，这些模型可能无法正确地描述诸如Mote 2的散射材料。大自然物理。 12，1105-1110（2016）。我们还专注于McCormick等人提出的最小模型。在物理中。 Rev. B 95，075133，它确实恢复了重要的ARC间散射特征。
We use the exact analytical technique introduced in Phys. Rev. B 101, 115405 to recover the surface Green's functions and the corresponding Fermi-arc surface states for various lattice models of Weyl semimetals. For these models we use the T-matrix formalism to calculate the quasiparticle interference patterns generated in the presence of impurity scattering. In particular, we consider the models introduced in Phys. Rev. B 93, 041109(R) (A) and Phys. Rev. Lett. 119, 076801 (B), and we find that, as opposed to observations previously obtained via joint density of states and spin-dependent scattering probability, the inter-arc scattering in the quasiparticle interference features is fully suppressed in model A, and very small in model B. Our findings indicate that these models may not correctly describe materials such as MoTe2, since for such materials inter-arc scattering is clearly visible experimentally, e.g., in Nature Phys. 12, 1105-1110 (2016). We also focus on the minimal models proposed by McCormick et al. in Phys. Rev. B 95, 075133, which indeed recover significant inter-arc scattering features.
