The structure and electronic transport properties of hole-doped La3/4Ca1/4MnO3 perovskite have been investigated as a function of pressure up to about 15 GPa. Though the applied pressure enhances the electrical conductivity, the high-pressure resistivity data point out a competing mechanism interfering with the pressure-induced charge delocalization that prevent the system from reaching a fully metallic state around room temperature. X-ray diffraction results reveal unexpected structural modifications with increasing pressure that can be interpreted with changes in the coherence length of the Jahn-Teller distortions.

Meneghini, C., D., L., Mobilio, S., M., O., M. N., R., A., K., et al. (2001). high pressure structure and electronic transport in hole doped La3/4Ca1/4MnO3 perovskites. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 65, 12111-12114 [10.1103/PhysRevB.65.012111].

high pressure structure and electronic transport in hole doped La3/4Ca1/4MnO3 perovskites

MENEGHINI, CARLO;MOBILIO, Settimio;
2001-01-01

Abstract

The structure and electronic transport properties of hole-doped La3/4Ca1/4MnO3 perovskite have been investigated as a function of pressure up to about 15 GPa. Though the applied pressure enhances the electrical conductivity, the high-pressure resistivity data point out a competing mechanism interfering with the pressure-induced charge delocalization that prevent the system from reaching a fully metallic state around room temperature. X-ray diffraction results reveal unexpected structural modifications with increasing pressure that can be interpreted with changes in the coherence length of the Jahn-Teller distortions.
2001
Meneghini, C., D., L., Mobilio, S., M., O., M. N., R., A., K., et al. (2001). high pressure structure and electronic transport in hole doped La3/4Ca1/4MnO3 perovskites. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 65, 12111-12114 [10.1103/PhysRevB.65.012111].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/117098
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