Article
Version 1
Preserved in Portico This version is not peer-reviewed
Absence of Weak Localization Effects in Strontium Ferromolybdate
Version 1
: Received: 15 May 2023 / Approved: 16 May 2023 / Online: 16 May 2023 (04:45:01 CEST)
A peer-reviewed article of this Preprint also exists.
Suchaneck, G.; Artiukh, E. Absence of Weak Localization Effects in Strontium Ferromolybdate. Appl. Sci. 2023, 13, 7096. Suchaneck, G.; Artiukh, E. Absence of Weak Localization Effects in Strontium Ferromolybdate. Appl. Sci. 2023, 13, 7096.
Abstract
Sr2FeMoO6-δ (SFMO) double perovskite is a promising candidate for room-temperature spintronic applications since it possesses a half-metallic character (with theoretically 100% spin polarization), a high Curie temperature of about 415 K, and a low-field magnetoresistance (LFMR). However, due to different synthesis conditions of ceramics as well as thin films, different mechanisms of electrical conductivity and magnetoresistance prevail. In this work, we consider the weak localization effect in SFMO occurring in disordered metallic or semiconducting systems at very low temperatures due to quantum interference of back-scattered electrons. We calculate the quantum corrections to conductivity and the contribution of electron scattering to the resistivity of SFMO. We attribute the temperature dependence of SFMO ceramics resistivity in the absence of a magnetic field to the fluctuation induced tunneling model. Also, we attribute the decreasing resistivity in the temperature range from 409 K up to 590 K to adiabatic small polaron hopping and not to localization effects. Both fluctuation induced tunneling and adiabatic small polaron hopping do not favor quantum interference. Additionally, we demonstrate that the resistivity upturn behavior of SFMO cannot be explained by weak localization. Consequently, to the best of our knowledge, there is still no convincing evidence for the presence of weak localization in SFMO.
Keywords
Strontium ferromolybdate; electrical conductivity; weak localization
Subject
Physical Sciences, Applied Physics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
