Evolution of quasiparticle properties in UGe(2) with hydrostatic pressure studied via the de Haas-van Alphen effect.
We report measurements of the de Haas-van Alphen effect in UGe (2) under hydrostatic pressures up to 17.6 kbar, exceeding the critical pressure P(c) for the suppression of ferromagnetism. A discontinuous change of the Fermi surface is found to occur across P(c). Substantially enhanced effective masses (approximately 40m(e)) are found near P(c) on both the ferromagnetic and the paramagnetic sides.
Terashima
T
T
National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan.
Matsumoto
T
T
Terakura
C
C
Uji
S
S
Kimura
N
N
Endo
M
M
Komatsubara
T
T
Aoki
H
H