Low-Temperature Specific Heat and Susceptibility of the Superheavy Fermion Compound CeCu 4 Ga
- 15 March 1988
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 5 (6), 541-545
- https://doi.org/10.1209/0295-5075/5/6/011
Abstract
For the recently discovered heavy-fermion compound CeCu4Ga specific heat and susceptibility measurements are presented for temperatures from 100 mK to 2 K and from 30 mK to 4 K, respectively. The ratio γ = c/T of the specific heat shows a maximum at 0.9 K with the giant value of 3.15 J/mole K2. From γ(0) = 1.83 J/mole K2 we estimate an effective mass m* ≈ 380m0 which is by far the heaviest mass of all presently known highly correlated electron systems.Keywords
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