2000/10/20 by M. J. Calderon, M. J. Calderón, L. Brey
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Amplitude #Condensed matter physics #Coupling (piping) #Electrical resistivity and conductivity #Electron #Ferromagnetism #Magnetic and transport properties of perovskites and related materials #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Scaling #Spin (aerodynamics) #Spin wave #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.64.140403
published as Physical Review B, Rapid Communications 64, 140403 (2001) · 4 pages, REVTEX
arxiv created 2000/10/20 · openalex publication_date 2001/09/17 · arxiv updated 2009/11/30 · openalex created_date 2016/08/23 · openalex updated_date 2026/08/05
We make a quantum description of the electron low-temperature properties of double-exchange materials. In these systems there is a strong coupling between the core spin and the carriers spin. This large coupling makes the low energy spin waves a combination of ion and electron density spin waves. We also analyze the spin up and down spectral functions of the temperature-dependent quasiparticles of this system. Finally we analyze the low-temperature resistivity of these systems. We find that static hopping amplitude disorder couples with the spin fluctuations and produces a low-temperature resistivity scaling as T3/2 whose magnitude agrees with experimental data.