The special features of the ground state in CeAl$_3$

The temperature ($3-60\,$K) and transferred momentum ($0.3-2.3\,$Å$^{-1}$) dependences of the intensity of quasi-elastic magnetic neutron scattering were studied for the polycrystalline heavy-fermion CeAl$_3$ compound to elucidate the special features of its ground state. Transferred momentum variations caused oscillations of the intensity of quasi-elastic magnetic neutron scattering, which was evidence of magnetic correlations in the $f$-electron subsystem occurring in a fairly wide temperature range.