{ "id": "2105.01328", "version": "v1", "published": "2021-05-04T07:24:31.000Z", "updated": "2021-05-04T07:24:31.000Z", "title": "Prediction of topological superconductivity in 1$T$-TiTe$_2$ under pressure", "authors": [ "Wenjun Liu", "Aiyun Luo", "Guyue Zhong", "Jinyu Zou", "Gang Xu" ], "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci" ], "abstract": "Topological superconductivity has attracted intensive interest for its ability of hosting Majorana zero mode and implementing in topological quantum computations. Based on the first-principles calculations and the analysis of the effective BdG Hamiltonian, we demonstrate that 1$T$-TiTe$_2$ is a topological metal hosting Dirac cone type of surface states near the Fermi level, and it exhibits a normal-topological-normal superconductivity phase transition as a function of the chemical potential. These results point out a new promising topological superconductor without random dopant, in which the influence of the impurity may be greatly reduced. Furthermore, our calculations also suggest that the transition metal intercalated Ti(Se$_{1-y}$Te$_y$)$_2$ is also a highly possible route to realize TSC and MZMs.", "revisions": [ { "version": "v1", "updated": "2021-05-04T07:24:31.000Z" } ], "analyses": { "keywords": [ "topological superconductivity", "metal hosting dirac cone type", "normal-topological-normal superconductivity phase transition", "prediction", "hosting majorana zero mode" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }