High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique

Content Provider	Semantic Scholar
Author	Li, Fankang Shen, Jiazhou Parnell, Steven R. Thaler, Alexander N. Matsuda, Masaaki Keller, Thomas C. S. Delaire, Olivier Pynn, R. Fernandez-Baca, J. A.
Copyright Year	2019
Abstract	The energy resolution of the conventional way of measuring a small change in a phonon dispersion curve using neutron scattering is restricted by the relatively coarse intrinsic resolution ellipsoid of the neutron triple-axis spectrometer (TAS). By implementing inelastic neutron spin echo on the host TAS using the Larmor precession of the neutron spin, the energy resolution of such measurements can be further improved without reducing the resolution ellipsoid. Measurements of the temperature-dependent phonon energy change are demonstrated using superconducting magnetic Wollaston prisms at the HB-1 instrument of the High-Flux Isotope Reactor at Oak Ridge National Laboratory, and the achievable resolution is
Starting Page	755
Ending Page	760
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1107/s1600576719008008
Volume Number	52
Alternate Webpage(s)	http://journals.iucr.org/j/issues/2019/04/00/in5021/in5021.pdf
Alternate Webpage(s)	https://doi.org/10.1107/s1600576719008008
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article