Irreversible dynamics of the phase boundary in U(Ru0.96Rh0.04)2Si2 and implications for ordering.
We report measurements and analysis of the specific heat and magnetocaloric effect-induced temperature changes at the phase boundary into the single magnetic field-induced phase (phase II) of U(Ru0.96Rh0.04)2Si2, which yield irreversible properties similar to those at the valence transition of Yb(1-x)Y(x)InCu4. To explain these similarities, we propose a bootstrap mechanism by which lattice parameter changes caused by an electric quadrupolar order parameter within phase II become coupled to the 5f-electron hybridization, giving rise to a valence change at the transition.
Silhanek
A V
AV
National High Magnetic Field Laboratory, Los Alamos National Laboratory, MS E536, Los Alamos, New Mexico 87545, USA.
Jaime
M
M
Harrison
N
N
Fanelli
V R
VR
Batista
C D
CD
Amitsuka
H
H
Nakatsuji
S
S
Balicas
L
L
Kim
K H
KH
Fisk
Z
Z
Sarrao
J L
JL
Civale
L
L
Mydosh
J A
JA