Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family

Details Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family

2008-06-17

arxiv.org/abs/0806.2776v2

Phys. Rev. Lett. 101, 257003 (2008)

Physics

Condensed Matter

Superconductivity

16 pages, 4 figures, 1 table

Scientific paper

10.1103/PhysRevLett.101.257003

In addition to higher Tc compared with the ubiquitous cuprates for a material composed of a single electronically active layer, the newly discovered LnFeAsO superconductors offer additional compositional variation. In a similar fashion to the CuO2 layers in cuprates, the FeAs layers now dominate the electronic states that produce superconductivity. Cuprate superconductors distinguish themselves structurally by adopting different stacking of the Cu-O and electronically inactive "spacer" layers. Using the same structural philosophy, materials with the formula (A,K)Fe2As2,A=Ba or Sr have been reported and possess a Tc~38 K. Here, we report the neutron diffraction studies of BaFe2As2 that shows, in contrast to previous studies on the LnFeAsO materials, an antiferromagnetic transition which concurs with first-order structural transition. Although the magnetic and structural transitions occur differently in the AFe2As2 and LnFeAsO-type materials, this work clearly demonstrates that the complete evolution to a low symmetry structure is a pre-requirement for the magnetic order.

Affiliated with

Also associated with

No associations

Rating

Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family 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 Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-408566