Doping-Induced Quantum Spin Hall Insulator to Superconductor Transition.
Doping-Induced Quantum Spin Hall Insulator to Superconductor Transition.
复制标题
DOI：
10.1103/physrevlett.126.205701
复制
发表时间：
2020-06
影响因子：
8.6
通讯作者：
Zhenjiu Wang;Yuhai Liu;Toshihiro Sato;M. Hohenadler;Chong Wang;Wenan Guo;F. Assaad
中科院分区：
文献类型：
--
作者：
Zhenjiu Wang;Yuhai Liu;Toshihiro Sato;M. Hohenadler;Chong Wang;Wenan Guo;F. Assaad
A quantum spin Hall insulating state that arises from spontaneous symmetry breaking has remarkable properties: skyrmion textures of the SO(3) order parameter carry charge 2e. Doping this state of matter opens a new route to superconductivity via the condensation of skyrmions. We define a model amenable to large-scale negative sign free quantum Monte Carlo simulations that allows us to study this transition. Our results support a direct and continuous doping-induced transition between the quantum spin Hall insulator and an s-wave superconductor. We can resolve dopings away from half-filling down to δ=0.0017. Such routes to superconductivity have been put forward in the realm of twisted bilayer graphene.
