We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Electron Paramagnetic Resonance in Kondo Insulators.
- Authors
Al'tshuler, T. S.; Bresle, M. S.
- Abstract
This review is devoted to the application of electron paramagnetic resonance (EPR) in the study of fluctuating-valence materials, which are characterized by a narrow gap in the electron energy spectrum (Kondo insulators or Kondo semiconductors). The authors’ papers on studying classical objects of this field of solid-state physics, SmB[sub 6] and YbB[sub 12], are considered as an illustration of the potentiality of the EPR method. Temperature dependences of the gap width in these materials were obtained, the static and dynamic Jahn–Teller effects on Sm[sup 3+] ions in SmB[sub 6] were detected, and the formation of Yb[sup 3+] ion pairs and the spontaneous breaking of cubic symmetry in YbB[sub 12] were observed. The results obtained indicate that preference should be given to the exciton–polaron model developed by Kikoin et al. for the ground state of Kondo insulators. © 2003 MAIK “Nauka / Interperiodica”.
- Subjects
ELECTRON paramagnetic resonance; KONDO effect; SOLID state physics; JAHN-Teller effect; SEMICONDUCTORS
- Publication
JETP Letters, 2003, Vol 78, Issue 6, p413
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1630139