2001/12/01 by Roderich Moessner, R Moessner · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism
paper · doi:10.1139/p01-123
crossref issued 2001/12/01 · crossref published 2001/12/01 · crossref published-print 2001/12/01 · openalex publication_date 2001/12/01 · crossref created 2011/04/24 · crossref deposited 2025/07/02 · openalex created_date 2025/10/10 · crossref indexed 2026/07/29 · openalex updated_date 2026/07/29
A nontechnical introduction to the theory of magnets with strong geometric frustration is given, concentrating on magnets on corner-sharing (Kagome, pyrochlore, SCGO, and GGG) lattices. Their rich behaviour is traced back to a large ground-state degeneracy in model systems, which renders them highly unstable towards perturbations. A systematic classification according to properties of their ground states is discussed. Other topics addressed in this overview article include a general theoretical framework for thermal order-by-disorder, the dynamics of how the vast regions of phase space accessible at low temperature are explored, the origin of the featureless magnetic susceptibility fingerprint of geometric frustration, the role of perturbations, and spin ice. The rich field of quantum frustrated magnets is also touched on. PACS No.: 75.50-y