TY - JOUR
T1 - Quadrupolar transition in CeB6
T2 - A new theoretical description
AU - Uimin, Gennadi
AU - Kuramoto, Yoshio
AU - Fukushima, Noboru
PY - 1996/12/1
Y1 - 1996/12/1
N2 - The well-separated ground state of the 4-fold degeneracy (Γ8 quartet) of a Ce3+ ion is an important prerequisite of the quadrupolar ordering in CeB6. A new description for the Γ8 quartet is proposed in terms of spin-like and orbital-like Pauli matrices, σ and τ. A unusual dependence of orbital ordering on magnetic field H and temperature T is explained in terms of mode-coupling effects. The theory naturally explains the orbitally modulated structure, the transition temperature behaviour, TQ 1 vs H, as well as the growing anomaly of the specific heat at TQ(H) with H increasing. Similar approach in terms of σ and τ matrices is available for the one f-hole compounds, e.g., TmTe.
AB - The well-separated ground state of the 4-fold degeneracy (Γ8 quartet) of a Ce3+ ion is an important prerequisite of the quadrupolar ordering in CeB6. A new description for the Γ8 quartet is proposed in terms of spin-like and orbital-like Pauli matrices, σ and τ. A unusual dependence of orbital ordering on magnetic field H and temperature T is explained in terms of mode-coupling effects. The theory naturally explains the orbitally modulated structure, the transition temperature behaviour, TQ 1 vs H, as well as the growing anomaly of the specific heat at TQ(H) with H increasing. Similar approach in terms of σ and τ matrices is available for the one f-hole compounds, e.g., TmTe.
UR - http://www.scopus.com/inward/record.url?scp=77958549122&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77958549122&partnerID=8YFLogxK
U2 - 10.1007/BF02570938
DO - 10.1007/BF02570938
M3 - Article
AN - SCOPUS:77958549122
VL - 46
SP - 1893
EP - 1894
JO - Czechoslovak Journal of Physics
JF - Czechoslovak Journal of Physics
SN - 0011-4626
IS - SUPPL. 4
ER -