Ferromagnetic insulating state in manganites:55Mn study

Details Ferromagnetic insulating state in manganites:55Mn study Ferromagnetic insulating state in manganites:55Mn study

2002-08-02

arxiv.org/abs/cond-mat/0208033v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 12 figures

Scientific paper

10.1103/PhysRevB.67.094403

55Mn NMR was used to study the ferromagnetic insulating state in four different manganites. In all cases the coexistence of two types of regions possessing different NMR spectra and nuclear spin dynamics was found. In the ferromagnetic insulating clusters the hopping frequency fhop of the electron holes is slower comparing to the NMR frequency fres and two lines ascribed to 3+ and 4+ valence states of Mn are observed. The relaxation rate increases rapidly with the increasing temperature, so that these spectra can no longer be observed for temperatures higher than approx 60 K. In ferromagnetic metallic clusters fres < fhop and the motionally narrowed spectrum is observed in a broad temperature interval, as the relaxation remains only moderately fast.

Affiliated with

Also associated with

No associations

Rating

Ferromagnetic insulating state in manganites:55Mn 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 Ferromagnetic insulating state in manganites:55Mn study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferromagnetic insulating state in manganites:55Mn study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-441839