Bulk TiSe2 is an intrinsically layered transition metal dichalcogenide (TMD) hosting both superconducting and charge density wave (CDW) ordering. Motivated by the recent progress in preparing two-dimensional TMDs, we study these frustrated orderings in {\it single} trilayer of TiSe2 within a renormalization group approach. We establish that a novel state with time-reversal symmetry broken chiral superconductivity can emerge from the strong competition between CDW formation and superconductivity. Its stability depends on the precise strength and screening of the electron-electron interactions in two-dimensional TiSe2.
@article{arxiv.1403.4271,
title = {Electronic correlations stabilizing time-reversal broken chiral superconductivity in single-trilayer TiSe$_2$},
author = {R. Ganesh and G. Baskaran and Jeroen van den Brink and Dmitry V. Efremov},
journal= {arXiv preprint arXiv:1403.4271},
year = {2015}
}