论文标题
点单极和偶极子电杂质的临界行为在均匀和单轴线紧张的石墨烯中
Critical behavior for point monopole and dipole electric impurities in uniformily and uniaxially strained graphene
论文作者
论文摘要
我们在石墨烯中重新审视石墨烯中的结合状态问题，在点的电动单极和偶极杂质电位的影响下扩展到该材料的膜均匀和单墨西肌紧张的情况下，这分别导致电荷和偶极矩的重新定义。通过考虑各向异性的费米速度，我们可以分析为每个电势求解所得的狄拉克方程。我们观察到，各向异性的作用是促进或抑制每种杂质发生的已知的关键行为，具体取决于施加应变的方向：原子塌陷，单翼杂质的出现，以及无数个与efimov scale的calscade cascade的出现，在较少的情况下发生了限制性的限制，而限制了这种限制性，而不是在识别范围内，而存在于现象。
We revisit the problem of bound states in graphene under the influence of point electric monopole and dipole impurity potentials extended to the case in which the membrane of this material is uniformly and uniaxially strained, which leads to a redefinition of the charge and dipole moment, respectively. By considering an anisotropic Fermi velocity, we analytically solve the resulting Dirac equation for each potential. We observe that the effect of the anisotropy is to promote or inhibit the critical behavior known to occur for each kind of impurity, depending on the direction along which strain is applied: both the atomic collapse, for the monopole impurity, and the emergence of cascades of infinitely many bound states with a universal Efimov-like scaling, for the dipole impurity, are phenomena that occur under less or more restrictive conditions due to strain.
