Topological insulators and thermoelectric materials

Abstract

Topological insulators (TIs) are a new quantum state of matter which have gapless surface states inside the bulk energy gap. Starting with the discovery of two dimensional TIs, the HgTe-based quantum wells, many new topological materials have been theoretically predicted and experimentally observed. Currently known TI materials can possibly be classified into two families, the HgTe family and the Bi2Se family. The signatures found in the electronic structure of a TI also cause these materials to be excellent thermoelectric materials. On the other hand, excellent thermoelectric materials can be also topologically trivial. Here we present a short introduction to topological insulators and thermoelectrics, and give examples of compound classes were both good thermoelectric properties and topological insulators can be found.

Phys. Status Solidi RRL, accepted

References in corpus (17)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Insulators with Inversion Symmetry
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• Time Reversal Polarization and a Z_2 Adiabatic Spin Pump
• Helical Metal Inside a Topological Band Insulator
• Covalent bonding and the nature of band gaps in some half-Heusler compounds
• On the $Z_2$ classification of Quantum Spin Hall Models
• Direct Evidence for the Dirac-Cone Topological Surface States in Ternary Chalcogenide TlBiSe2
• Topological Surface States and Dirac point tuning in ternary Bi2Te2Se class of topological insulators
• Three-Dimensional Topological Insulators in I-III-VI${}_2$ and II-IV-V${}_2$ Chalcopyrite Semiconductors
• Topological Insulators in Ternary Compounds with a Honeycomb Lattice
• Prediction of weak topological insulators in layered semiconductors
• General DFT++ method implemented with projector augmented waves: Electronic structure of SrVO${}_3$ and the Mott Transition in Ca${}_{2-x}$Sr${}_x$RuO${}_4$
• Theoretical prediction of topological insulator in ternary rare earth chalcogenides