2006/01/31 by A. S. Alexandrov, A. M. Bratkovsky, V. V. Kabanov · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Colossal magnetoresistance #Condensed matter physics #Cuprate #Electrical resistivity and conductivity #Electronic and Structural Properties of Oxides #Ferromagnetism #Giant magnetoresistance #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Magnetoresistance #Materials science #Paramagnetism #Phase (matter) #Phase transition #Physics #Pseudogap #Superconductivity #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.96.117003
published as Physical Review Letters, 96 (11), 117003/1-4 (2006) · 10 pages, 3 figures
arxiv created 2006/02/27 · openalex publication_date 2006/03/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Pairing of oxygen holes into heavy bipolarons in the paramagnetic phase and their magnetic pair breaking in the ferromagnetic phase (the so-called current-carrier density collapse) has accounted for the first-order ferromagnetic-phase transition, colossal magnetoresistance, isotope effect, and pseudogap in doped manganites. Here we propose an explanation of the phase coexistence and describe the magnetization and resistivity of manganites near the ferromagnetic transition in the framework of the current-carrier density collapse. The present quantitative description of resistivity is obtained without any fitting parameters, by using the experimental resistivities far away from the transition and the experimental magnetization, and is essentially model-independent.