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An Unconventional Jahn‐Teller Phenomenon in a Valency‐Mixing Surrounding
Author(s) -
Weber C.,
Sigmund E.,
Wagner M.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221380231
Subject(s) - valency , jahn–teller effect , isotropy , phenomenon , proposition , mixing (physics) , theoretical physics , ground state , physics , condensed matter physics , statistical physics , quantum mechanics , philosophy , ion , epistemology , linguistics
Stimulated by ESR measurements in SmB 6 :Er 3+ the unusual g ‐factor behaviour of the Er 3+ ground state, which is extraordinarily isotropic, is ascribed to a new kind of Jahn‐Teller‐type phenomenon. The 4f–5d hybridization deformations of the Sm neighbourhood adopt the role which in conventional Jahn‐Teller systems is played by nuclear distortions. Arguments for this proposition and numerical results are given. These show that the “minimal” model constitutes a good starting point for refined theories. Several options of refinement are indicated.