Thermodynamic Behavior of Ce Compounds Close to a $T \to 0$ Critical Point
- 23 July 2013
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 49 (8) , 4647-4651
Abstract
There is a reduced group of Ce very heavy Fermions (VHF) which do not order magnetically down to at least T ≈ 500 mK because they are very close to a Tord = 0 critical point. These compounds are at the top of the limT→ 0 Cm/T specific heat values because they collect very high density of low energy excitations. From the analysis of Cm(T)/T and entropy Sm(T) dependencies performed on selected CePd3Mx ternaries (where M = B and Be) a quantitative evaluation of an upper limit for the density of excitations can be proposed. These observations exclude any evidence of Cm(T)/T divergency as T→ 0 in agreement with thermodynamic laws. A comparison with selected Yb-base VHF supports these features.Keywords
This publication has 17 references indexed in Scilit:
- Tuning ground state degeneracy and quantum criticality in Ce1−xLaxTiGePhysica Status Solidi (b), 2010
- Six closely related YbT 2 Zn 20 (T = Fe, Co, Ru, Rh, Os, Ir) heavy fermion compounds with large local moment degeneracyProceedings of the National Academy of Sciences, 2007
- Peculiar Thermal Features of Ce-Systems Around Their Critical PointsJournal of Low Temperature Physics, 2007
- Non-Fermi-liquid behavior in- and-electron metalsReviews of Modern Physics, 2001
- Magnetic Order in the Heavy Fermion Compoundat mK TemperaturesPhysical Review Letters, 2000
- Fermi-liquid instability at magnetic–nonmagnetic quantum phase transitionsJournal of Magnetism and Magnetic Materials, 1999
- Disappearance of hyperscaling at low temperatures in non-Fermi-liquidCeCu5.2Ag0.8Physical Review B, 1998
- Possible Correlated-Electron Behavior from Quadrupolar Fluctuations in PrInAPhysical Review Letters, 1996
- Non-Fermi-liquid behavior in a heavy-fermion alloy at a magnetic instabilityPhysical Review Letters, 1994
- Low-temperature heat capacity and resistivity of CePd3+xand MPd3(M=Lu, La, Y and Sc)Journal of Physics F: Metal Physics, 1983