2009/03/27 by Víctor Pardo, Victor Pardo, Warren E. Pickett · 262 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electronic and Structural Properties of Oxides #Massless particle #Physics #Quantum mechanics #Transition Metal Oxide Nanomaterials #ZnO doping and properties #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.102.166803
published in Physical Review Letters 102(16), 166803 (American Physical Society) · 5 pages, 4 figures
arxiv created 2009/03/27 · openalex publication_date 2009/04/22 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Multilayer VO2/TiO2 nanostructures (d;1-d;0 interfaces with no polar discontinuity) are studied with first-principles density functional methods including structural relaxation. Quantum confinement of the half-metallic VO2 slab within insulating TiO2 produces an unexpected and unprecedented two-dimensional new state, with a (semi-Dirac) point Fermi surface: spinless charge carriers are effective-mass-like along one principal axis but are massless along the other. Effects of interface imperfection are addressed.