Stability of the Gd Magnetic Moment to the 500 GPa Regime

Details Stability of the Gd Magnetic Moment to the 500 GPa Regime Stability of the Gd Magnetic Moment to the 500 GPa Regime

2006-06-24

arxiv.org/abs/cond-mat/0606626v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 5 figures

Scientific paper

The evolution of the magnetic moment and various features of the electronic structure of fcc Gd are followed to reduced volume V/Vo = 0.125 using the LDA+U correlated band method. The stability of the moment is substantial; crude estimates of this signature of a possible ``Mott transition'' in the 4f system suggest a critical pressure Pc 500 GPa. The $4f$ occupation is found to increase under pressure due to broadening and lowering of the minority states. This trend is consistent with the interpretation of x-ray spectra of Maddox et al. across the volume collapse transition at 59 GPa, and tends to support their suggestion that the delocalization of the 4f states in Gd differs from the original abrupt picture, being instead a process that occurs over an extended range of pressure.

Affiliated with

Also associated with

No associations

Rating

Stability of the Gd Magnetic Moment to the 500 GPa Regime 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 Stability of the Gd Magnetic Moment to the 500 GPa Regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability of the Gd Magnetic Moment to the 500 GPa Regime will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-282258