Abstract
An isolated spin S can have only whole or half-integer values. It is shown that under certain circumstances a system composed of such spins can have low-lying excitations which correspond to a different value of the spin Seff which is intermediate between these standard possibilities. A general demonstration valid in any dimension is given followed by a detailed examination of the simplest, zero-dimensional example, namely a small easy plane ferromagnet. Some experimental implications are worked out.
Original language | English (US) |
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Pages (from-to) | L665-L670 |
Journal | Journal of Physics Condensed Matter |
Volume | 10 |
Issue number | 38 |
DOIs | |
State | Published - Sep 28 1998 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics