Tj. Sato et al., THE EFFECT OF HIGH-PRESSURE ON ANTIFERROMAGNETIC CORRELATIONS IN THE KONDO SEMIMETAL CENISN, Journal of physics. Condensed matter, 8(43), 1996, pp. 8183-8189
Magnetic excitation spectra of the Kondo semimetal CeNiSn have been st
udied by neutron scattering under hydrostatic pressure up to 11 kbar.
The inelastic peak at <(h)over bar omega> = 4 meV has been observed at
the ambient pressure below T-coh = 20 K and is regarded as a dynamic
antiferromagnetic correlation. As pressure is applied, the 4 meV peak
shifts to a higher-energy region and becomes weak. Since the pseudogap
is known to be suppressed under high pressure, this result strongly s
uggests that the antiferromagnetic correlation is closely related to p
seudogap formation.