TY - JOUR
T1 - Possible observation of the quadrupolar Kondo effect in dilute quadrupolar system PrxLa1-xPb3 for x≤0.05
AU - Kawae, T.
AU - Kinoshita, K.
AU - Nakaie, Y.
AU - Tateiwa, N.
AU - Takeda, K.
AU - Suzuki, H. S.
AU - Kitai, T.
PY - 2006/1/20
Y1 - 2006/1/20
N2 - We have studied non-Fermi-liquid (NFL) behavior in PrxLa1-xPb3 with Γ3 quadrupolar moments in the crystalline-electric-field ground state. The specific heat C/T shows NFL behavior in the very dilute region for x≤0.05, which is scaled by a characteristic temperature T* in each Pr concentration. The application of a magnetic field leads to a sharp increase of C/T, demonstrating the shift of the entropy existing in the lower temperature region at H=0T. Moreover, Fermi-liquid behavior emerges at higher fields, in contrast with NFL behavior at lower fields. The observed features indicate that NFL behavior is caused by the quadrupolar Kondo effect.
AB - We have studied non-Fermi-liquid (NFL) behavior in PrxLa1-xPb3 with Γ3 quadrupolar moments in the crystalline-electric-field ground state. The specific heat C/T shows NFL behavior in the very dilute region for x≤0.05, which is scaled by a characteristic temperature T* in each Pr concentration. The application of a magnetic field leads to a sharp increase of C/T, demonstrating the shift of the entropy existing in the lower temperature region at H=0T. Moreover, Fermi-liquid behavior emerges at higher fields, in contrast with NFL behavior at lower fields. The observed features indicate that NFL behavior is caused by the quadrupolar Kondo effect.
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U2 - 10.1103/PhysRevLett.96.027210
DO - 10.1103/PhysRevLett.96.027210
M3 - Article
AN - SCOPUS:32844472731
SN - 0031-9007
VL - 96
JO - Physical review letters
JF - Physical review letters
IS - 2
M1 - 027210
ER -