Ba1-xKxMn2As2: An Antiferromagnetic Local-Moment Metal
| Title | Ba1-xKxMn2As2: An Antiferromagnetic Local-Moment Metal |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Pandey A, Dhaka RS, Lamsal J, Lee Y, Anand VK, Kreyssig A, Heitmann TW, McQueeney RJ, Goldman AI, Harmon BN, Kaminski A, Johnston DC |
| Journal Title | Physical Review Letters |
| Volume | 108 |
| Pages | 087005 |
| Date Published | 02 |
| Type of Article | Article |
| ISBN Number | 0031-9007 |
| Accession Number | WOS:000300669600031 |
| Abstract | The compound BaMn2As2 with the tetragonal ThCr2Si2 structure is a local-moment antiferromagnetic insulator with a Neel temperature T-N = 625 K and a large ordered moment mu = 3.9 mu(B)/Mn. We demonstrate that this compound can be driven metallic by partial substitution of Ba by K while retaining the same crystal and antiferromagnetic structures together with nearly the same high T-N and large mu. Ba1-xKxMn2As2 is thus the first metallic ThCr2Si2-type MAs-based system containing local 3d transition metal M magnetic moments, with consequences for the ongoing debate about the local-moment versus itinerant pictures of the FeAs-based superconductors and parent compounds. The Ba1-xKxMn2As2 class of compounds also forms a bridge between the layered iron pnictides and cuprates and may be useful to test theories of high T-c superconductivity. |
| URL | <Go to ISI>://WOS:000300669600031 |
| DOI | 10.1103/PhysRevLett.108.087005 |
| Alternate Journal | Phys. Rev. Lett. |
