2014/05/19 by Bernd Lorenz, Arnold M. Guloy, Paul C. W. Chu · 14 citations
Materials Science · Physics and Astronomy · #Charge density #Charge density wave #Copper oxide #Density of states #Electronic and Structural Properties of Oxides #Fermi surface #Iron-based superconductors research #Metal #Oxide #Physics of Superconductivity and Magnetism #Pnictogen #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1142/s0217979214300114
published in International Journal of Modern Physics B 28(19), 1430011 (World Scientific) · Preprint of a review article submitted for consideration in International Journal of Modern Physics B, \c{opyright} 2014 [copyright World Scientific Publishing Company], http://www.worldscientific.com/worldscinet/ijmpb, 25 pages, 14 figures
openalex publication_date 2014/05/19 · arxiv created 2014/06/02 · arxiv updated 2014/06/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Superconductivity in a novel class of layered materials, Ti -based pnictide oxides, was recently discovered. These compounds have attracted interest since they combine features of copper oxide and iron pnictide superconductors. Here the transition metal (titanium) forms two-dimensional Ti 2 O layers (anti structure to the CuO 2 planes), capped by pnictogen ions (similar to Fe 2 As 2 layers). The pnictide oxide compounds show a spin or charge density wave phase which coexists with superconductivity in some members of the family. Unlike the cuprates, but similar to iron pnictides, the parent compounds of pnictide oxides are metals with specific nesting properties of the Fermi surface which leads to the density wave instability. The nature of the superconductivity, coexisting with the density wave order, and the possible competition or mutual interaction between both states is one of the central questions of recent studies. This short review summarizes the current knowledge from an experimental as well as theoretical point of view and discusses some of the open questions and possible future developments.