TY - JOUR
T1 - Multipolar Kondo effect in orbitally degenerate f-electron systems
AU - Kusunose, H.
AU - Kuramoto, Y.
N1 - Funding Information:
We would like to thank Prof. Osamu Sakai, Dr. Yukihiro Shimizu and Dr. Shunya Suzuki for discussion on details of the NRG computation. Thanks are also due to Prof. Masaki Oshikawa for fruitful discussion. This work was supported by a Grant-in-Aid for the encouragement of Young Scientists from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 2000/6/1
Y1 - 2000/6/1
N2 - Entanglement of spin and orbital Kondo effect is investigated on the basis of a Kondo-type exchange model with an orbital degeneracy. In the presence of particle-hole symmetry, we show that the model has a new non-Fermi-liquid fixed point with a fractional entropy. The spectral intensity of the quadrupole susceptibility diverges in the zero-frequency limit, while the dipole susceptibility shows a Fermi-liquid-like behavior. Even for a fairly particle-hole asymmetric case with the Fermi-liquid ground state, the non-Fermi-liquid behavior has significant influences on electric and thermal properties.
AB - Entanglement of spin and orbital Kondo effect is investigated on the basis of a Kondo-type exchange model with an orbital degeneracy. In the presence of particle-hole symmetry, we show that the model has a new non-Fermi-liquid fixed point with a fractional entropy. The spectral intensity of the quadrupole susceptibility diverges in the zero-frequency limit, while the dipole susceptibility shows a Fermi-liquid-like behavior. Even for a fairly particle-hole asymmetric case with the Fermi-liquid ground state, the non-Fermi-liquid behavior has significant influences on electric and thermal properties.
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U2 - 10.1016/S0921-4526(99)00900-X
DO - 10.1016/S0921-4526(99)00900-X
M3 - Conference article
AN - SCOPUS:0033907673
VL - 281-282
SP - 544
EP - 545
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)
Y2 - 24 August 1999 through 28 August 1999
ER -