Non-adiabatic small polaron hopping in the n=3 Ruddlesden-Popper compound Ca4Mn3O10



Lago, J, Battle, PD, Rosseinsky, MJ ORCID: 0000-0002-1910-2483, Coldea, AI and Singleton, J
(2003) Non-adiabatic small polaron hopping in the n=3 Ruddlesden-Popper compound Ca4Mn3O10. Journal of Physics: Condensed Matter, 15 (40). pp. 6817-6833.

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Abstract

Magnetotransport properties of the compound Ca4Mn3O10 are interpreted in terms of activated hopping of small magnetic polarons in the non-adiabatic regime. Polarons are most likely formed around Mn3+ sites created by oxygen substoichiometry. The application of an external field reduces the size of the magnetic contribution to the hopping barrier and thus produces an increase in the conductivity .We argue that the change in the effective activation energy around TN is due to the crossover to VRH conduction as antiferromagnetic order sets in.

Item Type: Article
Additional Information: 29 pages, 7 figures
Uncontrolled Keywords: cond-mat.mtrl-sci, cond-mat.mtrl-sci
Depositing User: Symplectic Admin
Date Deposited: 02 Aug 2016 13:47
Last Modified: 19 Jan 2023 07:32
DOI: 10.1088/0953-8984/15/40/018
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3002647