Tunnel splitting oscillations in the molecular magnet Fe8 are best interpreted in terms of interfering spin paths. However, this picture is incomplete and one must also consider discontinuous paths to explain the observations. This is one example of how the Fe8 system has motivated workers to better understand spin coherent state path integrals and the semiclassical limit for spin. As a second example, we discuss the recently derived Bohr-Sommerfeld rule for spin.
ASJC Scopus subject areas
- Condensed Matter Physics