Tunable Polaronic Conduction in AnataseTiO2

2013/03/22 by S. Moser, Simon Moser, L. Moreschini +18 · 5 citations
Chemistry · Materials Science · Physics and Astronomy · #Anatase #Chemistry #Condensed matter physics #Doping #Electron #Electronic and Structural Properties of Oxides #Magnetic and transport properties of perovskites and related materials #Materials science #Metal #Nuclear physics #Optoelectronics #Physics #Polaron #Quasiparticle #Superconductivity #Thermal conduction #ZnO doping and properties #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.110.196403

published as Phys. Rev. Lett. 110, 196403 (2013)

arxiv created 2013/03/22 · openalex publication_date 2013/05/07 · arxiv updated 2015/06/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Oxygen vacancies created in anatase TiO(2) by UV photons (80-130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angle resolved photoemission reveals that the quasiparticles are large polarons. These results indicate that anatase can be tuned from an insulator to a polaron gas to a weakly correlated metal as a function of doping and clarify the nature of conductivity in this material.

Citations

• Self-energy and excitonic effects in the electronic and optical properties ofTiO2crystalline phases

Cited by

• Observation of the polaronic character of excitons in a two-dimensional semiconducting magnet CrI3
• Strongly bound excitons in anatase TiO2 single crystals and nanoparticles
• Charge Trapping at the Step Edges of TiO2 Anatase (101)
• Direct View at Excess Electrons inTiO2Rutile and Anatase
• Single spin-polarized Fermi surface in SrTiO3 thin films