1999/11/12 by T. Saitoh, D. S. Dessau, Yutaka Moritomo +6 · 79 citations
Materials Science · Physics and Astronomy · #Colossal magnetoresistance #Condensed matter physics #Cuprate #Electronic and Structural Properties of Oxides #Ferromagnetism #Giant magnetoresistance #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetoresistance #Materials science #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.62.1039
published in Physical review. B, Condensed matter 62(2), 1039-1043 (American Physical Society) · 5 pages, 6 figures, submitted to Phys. Rev. B
arxiv created 1999/11/12 · openalex publication_date 2000/07/01 · arxiv updated 2016/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Direct electronic structure measurements of a variety of colossal magnetoresistive (CMR) oxides show the presence of a pseudogap at the Fermi energy EF which drastically suppresses the electron spectral function at EF. The pseudogap is a strong function of the layer number of the samples (sample dimensionality) and is strongly temperature dependent, with the changes beginning at the ferromagnetic transition temperature Tc. These trends are consistent with the major transport trends of the CMR oxides, implying a direct relationship between the pseudogap and transport, including the ``colossal'' conductivity changes which occur across Tc. The k dependence of the temperature-dependent effects indicates that the pseudogap observed in these compounds is not due to the extrinsic effects proposed by Joynt.