Correlations between Spectra and Resistivity in Transition Metal Oxides
Artikel i vetenskaplig tidskrift, 2019

A comparison between photoconductivity spectra and resistivity in two transition metal oxides, La2-xSrxCuO4 and La1-xSrxVO3, is presented. The resistivities ρ(T) for x < 0.05 in the cuprate and x < 0.28 in the vanadate are typical for single electron transfer. For T > 100 K, ρ(T) - ρ(0) ∼T3/2. For higher dopings (x) the cuprate is a superconductor (x < 0.25) and the vanadate an ordinary metal. This tallies with the number of oxidation states and their spins when the electrons transfer locally. The insulator-metal transition and the vanishing of Cooper pairs are discussed in the conclusion.

Vanadium compounds

Strontium compounds

Lanthanum compounds

Metal insulator transition

Transition metals

Copper compounds


Sven Larsson

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Journal of Physical Chemistry B

1520-6106 (ISSN) 1520-5207 (eISSN)

Vol. 123 44 9449-9455


Oorganisk kemi

Teoretisk kemi

Den kondenserade materiens fysik



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