Evolution of Topological End States in the One-Dimensional Kondo–Heisenberg Model with Site Modulation
Neng Xie1, Danqing Hu1, Shu Chen1,2,3, and Yi-feng Yang1,2,3*
1Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China 3Songshan Lake Materials Laboratory, Dongguan 523808, China
Abstract：We investigate interplay of topological and Kondo effects in a one-dimensional Kondo–Heisenberg model with nontrivial conduction band using the density matrix renormalization group method. By analyzing the density profile, the local hybridization, and the spin/charge gap, we find that the Kondo effect can be destructed at edges of the chain by the topological end state below a finite critical Kondo coupling $J_{\scriptscriptstyle{\rm K}}^{\rm c}$. We construct a phase diagram characterizing the transition of the end states.
(Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)
引用本文:
. [J]. 中国物理快报, 2022, 39(11): 117101-.
Neng Xie, Danqing Hu, Shu Chen, and Yi-feng Yang. Evolution of Topological End States in the One-Dimensional Kondo–Heisenberg Model with Site Modulation. Chin. Phys. Lett., 2022, 39(11): 117101-.
2022, Vol. 39 
