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Nuclear spin driven quantum relaxation in LiY0.998Ho0.002F4.
- Source :
-
Physical review letters [Phys Rev Lett] 2001 Jul 30; Vol. 87 (5), pp. 057203. Date of Electronic Publication: 2001 Jul 17. - Publication Year :
- 2001
-
Abstract
- Staircaselike hysteresis loops of the magnetization of a LiY0.998Ho0.002F4 single crystal are observed at subkelvin temperatures and low field sweep rates. This behavior results from quantum dynamics at avoided level crossings of the energy spectrum of single Ho3+ ions in the presence of hyperfine interactions. Enhanced quantum relaxation in constant transverse fields allows the study of the relative magnitude of tunnel splittings. At faster sweep rates, nonequilibrated spin-phonon and spin-spin transitions, mediated by weak dipolar interactions, lead to magnetization oscillations and additional steps.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 87
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 11497804
- Full Text :
- https://doi.org/10.1103/PhysRevLett.87.057203