Excited state spin waves in ErFe2 |
| |
| Authors: | NC Koon JJ Rhyne |
| |
| Institution: | 1. Naval Research Laboratory, Washington, DC 20375 USA;2. Institute for Materials Research, National Bureau of Standards, Washington, DC 20234 USA |
| |
| Abstract: | Neutron inelastic scattering measurements on ErFe2 reveal an unusual doubling of the two lowest energy spin wave branches over a wide temperature range. Crystal field calculations suggest that one member of each doublet is associated with transitions from the ground state of Er3+ to the first excited state, while the other is associated with transitions between excited states. The gapless acoustic mode appearing at high temperatures is identified as a propagating excited state spin wave. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
