Spin-Lattice Relaxation in an Isotropic Elastic Continuum with Spherical Lattice Waves and a Cubic Crystal Field.
Abstract
Spin-lattice relaxation among hyperfine levels of the cubic systems Tm(2+):CaF2,Ho(2+):CaF2, and Er(3+):MgO is studied from zero to high magnetic fields. Relaxation rate expressions are derived employing a description of lattice dynamics in terms of normal modes of vibration transforming as spherical harmonics. Full use is made of symmetry considerations in formulating the ion-lattice interaction Hamiltonian and the computation of transition rates. Relaxation between ion levels not derived from a time conjugate pair of electronic states is discussed in detail, with particular attention to the Raman process which may exhibit a complex temperature dependence in such cases. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1973
- Accession Number
- AD0769832
Entities
People
- Donald R. Franceschetti
- Elliot R. Bernstein
Organizations
- Princeton University