Pressure-driven magnetic moment collapse in the ground state of MnO

Details Pressure-driven magnetic moment collapse in the ground state of MnO Pressure-driven magnetic moment collapse in the ground state of MnO

2008-03-20

arxiv.org/abs/0803.3026v1

New Journal of Physics 9 (2007) 235

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

The zero temperature Mott transition region in antiferromagnetic, spin S=5/2 MnO is probed using the correlated band theory LSDA+U method. The first transition encountered is an insulator-insulator volume collapse within the rocksalt structure that is characterized by an unexpected Hund's rule violating `spin-flip' moment collapse. This spin-flip to S=1/2 takes fullest advantage of the anisotropy of the Coulomb repulsion, allowing gain in the kinetic energy (which increases with decreasing volume) while retaining a sizable amount of the magnetic exchange energy. While transition pressures vary with the interaction strength, the spin-flip state is robust over a range of interaction strengths and for both B1 and B8 structures.

Affiliated with

Also associated with

No associations

Rating

Pressure-driven magnetic moment collapse in the ground state of MnO 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 Pressure-driven magnetic moment collapse in the ground state of MnO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure-driven magnetic moment collapse in the ground state of MnO will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-578255