High-Pressure Phase Diagram in the Manganites: a Two-site Model Study

Details High-Pressure Phase Diagram in the Manganites: a Two-site Model Study High-Pressure Phase Diagram in the Manganites: a Two-site Model Study

2004-02-10

arxiv.org/abs/cond-mat/0402279v1

New J Phys 8, 3 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1088/1367-2630/8/1/003

The pressure dependence of the Curie temperature $T_C$ in manganites, recently studied over a wide pressure range, is not quantitatively accounted for by the quenching of Jahn-Teller distortions, and suggests the occurrence of a new pressure-activated localizing processes. We present a theoretical calculation of $T_C$ based on a two-site double-exchange model with electron-phonon coupling interaction and direct superexchange between the $% t_{2g}$ core spins. We calculate the pressure dependence of $T_C$ and compare it with the experimental phase diagram. Our results describe the experimental behavior quite well if a pressure-activated enhancement of the antiferromagnetic superexchange interaction is assumed.

Affiliated with

Also associated with

No associations

Rating

High-Pressure Phase Diagram in the Manganites: a Two-site Model Study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High-Pressure Phase Diagram in the Manganites: a Two-site Model Study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Pressure Phase Diagram in the Manganites: a Two-site Model Study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-167642