Chemistry of Thallium-based Topological Insulators

摘要

The goal of this review is to briefly introduce the chemistry of the topological insulators (TIs) based on thallium chalcogenides. Numerous phase diagrams of ternary Tl-B~(V)-X (B~(V) – Sb, Bi; X – Se, Te) systems having TlB~(V)X_(2) type compounds which exhibit spin polarized topological surface state? is evaluated and compiled. Published data on the phase equilibria in the quaternary Tl-Sb-Bi-X and Tl-BV-X-X~(/) systems are also reviewed and it has been revealed that their quasiternary Tl_(2)X-Sb_(2)X_(3)-Bi_(2)X_(3) and reciprocal 3Tl_(2)X+B~(V)_(2)X~(/)_(3)?3Tl_(2)X~(/)+B~(V)_(2)X_(3) subsystems form a wide range of solid solutions based on compounds TlB~(V)X_(2) and B~(V)_(2)X_(3), whose both confirmed as potential 3D TIs materials. All phase diagrams of respective systems offer profound possibilities for growth their large single crystals from melt.