论文标题
DIRAC半学上的自旋1/2链中的近藤分解
Kondo breakdown in a spin-1/2 chain of adatoms on a Dirac semimetal
论文作者
论文摘要
我们考虑了通过临床相互作用与二维狄拉克费米子（Spin-1/2）链条链结合的旋转1/2链。在\ textit {脱钩}固定点上，近相互作用是无关紧要的，导致存在近核破裂阶段和一个将这种阶段与繁重的费米液体分开的吻合式损坏阶段。我们基于重新归一化组分析，大N计算以及广泛的辅助场量子蒙特卡洛模拟得出这一结论。我们提取诸如零偏置隧道电导等量，这将与涉及半含量（例如石墨烯）的未来实验有关。
We consider a spin-1/2 Heisenberg chain coupled via a Kondo interaction to two-dimensional Dirac fermions. The Kondo interaction is irrelevant at the \textit{decoupled} fixed-point, leading to the existence of a Kondo-breakdown phase and a Kondo-breakdown critical point separating such a phase from a heavy Fermi liquid. We reach this conclusion on the basis of a renormalization group analysis, large-N calculations as well as extensive auxiliary-field quantum Monte Carlo simulations. We extract quantities such as the zero-bias tunneling conductance which will be relevant to future experiments involving adatoms on semimetals such as graphene.
