Abstract
The magnetic spectral response of black-phase mixed-valence (formula presented) has been measured by inelastic neutron scattering on a single crystal. Two magnetic peaks are observed in the energy range of the (formula presented) spin-orbit transition (25-40 meV). Both of them exhibit significant dispersion along the three main symmetry directions, reminiscent of the spin-orbit exciton branch found in pure divalent SmS. The results can be reproduced by a simple phenomenological model taking into account the existence of sizable Sm-Sm exchange interactions, and a microscopic mechanism is proposed on the basis of the “local-bound-state” theory developed previously for (formula presented).
Original language | English |
---|---|
Pages (from-to) | 1-4 |
Number of pages | 4 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 65 |
Issue number | 15 |
DOIs | |
Publication status | Published - 2002 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics