4f delocalization in Gd: inelastic x-ray scattering at ultrahigh pressure.
We present resonant inelastic x-ray scattering and x-ray emission spectroscopy results on Gd metal to 113 GPa which suggest Kondo-like aspects in the delocalization of 4f electrons. Analysis of the resonant inelastic x-ray scattering data reveals a prolonged and continuous delocalization with volume throughout the entire pressure range, so that the volume-collapse transition at 59 GPa is only part of the phenomenon. Moreover, the Lgamma1 x-ray emission spectroscopy spectra indicate no apparent change in the bare 4f moment across the collapse, suggesting that Kondo screening is responsible for the expected Pauli-like behavior in magnetic susceptibility.
Maddox
B R
BR
Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
Lazicki
A
A
Yoo
C S
CS
Iota
V
V
Chen
M
M
McMahan
A K
AK
Hu
M Y
MY
Chow
P
P
Scalettar
R T
RT
Pickett
W E
WE