| Title | Ultrafast observation of critical nematic fluctuations and giant magnetoelastic coupling in iron pnictides |
| Publication Type | Journal Article |
| Year of Publication | 2014 |
| Authors | Patz, A, Li, TQ, Ran, S, Fernandes, RM, Schmalian, J, Bud'ko, SL, Canfield, PC, Perakis, IE, Wang, JG |
| Journal | Nature Communications |
| Volume | 5 |
| Pagination | 3229 |
| Date Published | 02 |
| Type of Article | Article |
| ISBN Number | 2041-1723 |
| Accession Number | WOS:000332665700004 |
| Keywords | anisotropy, arsenide superconductor, bafe2as2, detwinned ba(fe1-xcox)(2)as-2, dynamics, order, state, transition |
| Abstract | mplex refractive index, displays a characteristic two-step recovery absent in the isotropic response. The fast recovery appears only in the magnetically ordered state, whereas the slow one persists in the paramagnetic phase with a critical divergence approaching the structural transition temperature. The dynamics also reveal a gigantic magnetoelastic coupling that far exceeds electron-spin and electron-phonon couplings, opposite to conventional magnetic metals. |
| DOI | 10.1038/ncomms4229 |
| Custom 1 | Complex States |
| Custom 2 | Metamaterials |
