Antiferromagnetic ordering in the absence of structural distortion in Ba(Fe1-xMnx)(2)As-2
| Title | Antiferromagnetic ordering in the absence of structural distortion in Ba(Fe1-xMnx)(2)As-2 |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | Kim MG, Kreyssig A, Thaler A, Pratt DK, Tian W, Zarestky JL, Green MA, Bud'ko SL, Canfield PC, McQueeney RJ, Goldman AI |
| Journal Title | Physical Review B |
| Volume | 82 |
| Pages | 220503 |
| Date Published | 12 |
| Type of Article | Article |
| ISBN Number | 1098-0121 |
| Accession Number | ISI:000286758500001 |
| Abstract | Neutron and x-ray diffraction studies of Ba(Fe1-xMnx)(2)As-2 for low doping concentrations (x <= 0.176) reveal that at a critical concentration, 0.102 < x < 0.118, the tetragonal-to-orthorhombic transition abruptly disappears whereas magnetic ordering with a propagation vector of (1/2 1/2 1 ) persists. Among all of the iron arsenides this observation is unique to Mn doping, and unexpected because all models for "stripelike" antiferromagnetic order anticipate an attendant orthorhombic distortion due to magnetoelastic effects. We discuss these observations and their consequences in terms of previous studies of Ba(Fe1-xTMx)(2)As-2 compounds (TM = transition metal ), and models for magnetic ordering in the iron arsenide compounds. |
| URL | <Go to ISI>://000286758500001 |
| DOI | 10.1103/PhysRevB.82.220503 |
| Alternate Journal | Phys. Rev. B |
