Electronic Raman scattering in Magnetite, Spin vs. Charge gap

Details Electronic Raman scattering in Magnetite, Spin vs. Charge gap Electronic Raman scattering in Magnetite, Spin vs. Charge gap

2009-07-09

arxiv.org/abs/0907.1424v1

PRB 79, 144303 (2009)

Physics

Condensed Matter

Materials Science

4 figures, 1 table

Scientific paper

We report Raman scattering data of single crystals of magnetite (Fe3O4) with Verwey transition temperatures (Tv) of 123 and 117K, respectively. Both single crystals reveal broad electronic background extending up to 900 wavenumbers (~110 meV). Redistribution of this background is observed when samples are cooled below Tv. In particular, spectra of the low temperature phase show diminished background below 300 wavenumbers followed by an enhancement of the electronic background between 300 and 400 wavenumbers. To enhance the effect of this background redistribution we divide the spectra just below the transition by the spectra just above the transition. A resultant broad peak-like feature is observed, centered at 370 wavenumbers (45 meV). The peak position of this feature does not scale with the transition temperature. We discuss two alternative assignments of this feature to a spin or charge gap in magnetite.

Affiliated with

Also associated with

No associations

Rating

Electronic Raman scattering in Magnetite, Spin vs. Charge gap 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 Electronic Raman scattering in Magnetite, Spin vs. Charge gap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic Raman scattering in Magnetite, Spin vs. Charge gap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-340789