Mossbauer spectroscopy study of the "mysterious" magnetic transition in lambda-(BETS)2FeCl4

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

10 pages, 3 figures, 1 table

Scientific paper

The compound lambda-(BETS)2FeCl4 provides an effective demonstration of the interaction of pi-conduction electron and d-electron localized moment systems in molecular crystalline materials where antiferromagnetic insulating and magnetic field induced superconducting states can be realized. The metal-insulator transition has been thought to be cooperative, involving both the itinerant pi- electron and localized d-electron spins where antiferromagnetic order appears in both systems simultaneously. However, recent specific heat data has indicated otherwise [Akiba et al., J. Phys. Soc. Japan 78,033601(2009)]: although the pi-electron system orders antiferromagnetically and produces a metal-insulator transition, a "mysterious" paramagnetic d-electron state remains. We report 57Fe Mossbauer measurements that support the paramagnetic model, provided the d-electron spins remain in a fast relaxation state below the transition. From the measured hyperfine fields, we also determine the temperature dependence of the pi-d electron exchange field.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Mossbauer spectroscopy study of the "mysterious" magnetic transition in lambda-(BETS)2FeCl4 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 Mossbauer spectroscopy study of the "mysterious" magnetic transition in lambda-(BETS)2FeCl4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mossbauer spectroscopy study of the "mysterious" magnetic transition in lambda-(BETS)2FeCl4 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-723739

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.