Nuclear resonant inelastic X-ray scattering at high pressure and low temperature.
A new synchrotron radiation experimental capability of coupling nuclear resonant inelastic X-ray scattering with the cryogenically cooled high-pressure diamond anvil cell technique is presented. The new technique permits measurements of phonon density of states at low temperature and high pressure simultaneously, and can be applied to studies of phonon contribution to pressure- and temperature-induced magnetic, superconducting and metal-insulator transitions in resonant isotope-bearing materials. In this report, a pnictide sample, EuFe2As2, is used as an example to demonstrate this new capability at beamline 3-ID of the Advanced Photon Source, Argonne National Laboratory. A detailed description of the technical development is given. The Fe-specific phonon density of states and magnetism from the Fe sublattice in Eu(57)Fe2As2 at high pressure and low temperature were derived by using this new capability.
Department of Geology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Wenli
W
Bi
Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.
Jiyong
J
Zhao
Department of Geology Sciences, The University of Texas at Austin, Austin, TX 78712, USA.
Jung-Fu
JF
Lin
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10090, People's Republic of China.
Quanjie
Q
Jia
Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.
Michael Y
MY
Hu
Insitute of Physics, Chinese Academy of Sciences, Beijing 10090, People's Republic of China.
Changqing
C
Jin
HPSynC, Carnegie Institution of Washington, Argonne, IL 60439, USA.
Richard
R
Ferry
Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, People's Republic of China.
Wenge
W
Yang
Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
Viktor
V
Struzhkin
Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.
E Ercan
EE
Alp
high pressure; iron-pnictides; low temperature; nuclear resonant scattering; phonon density of states