Lattice vibrations of the superconducting oxide spinels (Li,Mg)1+xTi2-xO4

Green, M.A., Dalton, M., Prassides, K., Day, P., Neumann, D.A. (1997) Lattice vibrations of the superconducting oxide spinels (Li,Mg)1+xTi2-xO4. Journal of Physics Condensed Matter, 9 (49). pp. 10855-10865. ISSN 0953-8984. (doi:10.1088/0953-8984/9/49/006) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1088/0953-8984/9/49/006

Abstract

The lattice vibrational spectra of the spinel phases, Li1+tTi2-xO4 (x = O, 0.33) and Li1-yMgyTi2O4 (y = 0.1, 0.3) (space group F d3Ì?m), have been measured as a function of temperature and composition by neutron inelastic scattering. Calculations of phonon densities of states (PDOSs) using interatomic potentials were performed and compared with the experimental data. Extensive phonon softening and hardening are observed on Li and Mg substitution throughout the energy range 10-100 meV and are discussed in terms of electron-phonon coupling and its relevance to superconductivity. The observed PDOSs show no change on cooling through the superconducting transition temperature, Tc.

Item Type: Article
DOI/Identification number: 10.1088/0953-8984/9/49/006
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J Phys Condens Matter [Field not mapped to EPrints] AD - Royal Institution of Great Britain, 21 Albemarle Street, London W1X 4BS, United Kingdom [Field not mapped to EPrints] AD - Sch. Chem., Phys. and Environ. Sci., Sussex University, Falmer, Brighton BN1 9QJ, United Kingdom [Field not mapped to EPrints] AD - NIST Center for Neutron Research, Natl. Inst. of Std. and Technology, Gaithersburg, MD 20899, United States [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Band structure, Calculations, Electronic density of states, Electronic structure, Electrons, Lithium compounds, Neutron scattering, Oxide superconductors, Phonons, Superconducting transition temperature, Superconductivity, Electron phonon coupling, Neutron inelastic scattering, Lattice vibrations
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 14:03 UTC
Last Modified: 29 May 2019 16:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51155 (The current URI for this page, for reference purposes)
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