Topological superconductors with spin-triplet pairings and Majorana Fermi arcs  

作　　者：黄石 罗熙 Shi Huang;Xi Luot(College of Science,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]College of Science,University of Shanghai for Science and Technology,Shanghai 200093,China

出　　处：《Chinese Physics B》2024年第8期453-458,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.12174067 and 11804223)。

摘　　要：We construct a three-dimensional topological superconductor Bogoliubov–de Gennes(BdG)Hamiltonian with the normal state being a three-dimensional topological insulator.By introducing inter-orbital spin-triplet pairings term△3,there are topological Majorana nodes in the bulk and they are connected by Majorana Fermi arcs on the surface,similar to the case of Weyl semimetal.Furthermore,by adding an inversion-breaking term to the normal state,momentum-independent pairing terms with different parities can coexist in the Bd G Hamiltonian,which creates more Majorana modes similar to Andreev bound states and a richer phase diagram.

关 键 词：topological surface states topological superconductors topological nodes Weyl points Majorana Fermi arcs 

分 类 号：O469[理学—凝聚态物理]