2019/02/08 by Prachi Telang, Kshiti Mishra, Giacomo Prando +2
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Chemistry #Condensed matter physics #Crystallography #Doping #Electrical resistivity and conductivity #Ground state #Lattice (music) #Materials science #Metal #Mott insulator #Nuclear materials and radiation effects #Phase (matter) #Phase boundary #Physics #Pyrochlore #Quantum mechanics #Topological Materials and Phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.99.201112
published as Phys. Rev. B 99, 201112 (2019) · 5 Pages, 4 figures
arxiv created 2019/02/08 · openalex publication_date 2019/05/30 · arxiv updated 2019/06/05 · openalex created_date 2019/06/07 · openalex updated_date 2026/08/05
We study the pyrochlore series (Eu_1\ensuremath-xBix)2Ir2O7 for 0\ensuremath≤x\ensuremath≤1. We show that for small x, the lattice undergoes an anomalous contraction but the time reversal symmetry breaking all-in/all-out state remains robust and the resistivity approaches a 1/T dependence at low T, suggesting proximity to the Weyl semimetallic phase. At the boundary near 10% Bi doping, a qualitatively different ground state emerges, which is characterized by a metallic behavior and the absence of magnetic ordering at least down to 0.02\phantom\rule0.28em0exK. For higher Bi doping, the resistivity remains metallic, and evolves gradually from T linear to T2 to T3/2, suggesting the possibilities of myriad different electronic phases between Eu2Ir2O7 and Bi2Ir2O7.