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

Publication ,  Journal Article
Li, F; Shen, J; Parnell, SR; Thaler, AN; Matsuda, M; Keller, T; Delaire, O; Pynna, R; Fernandez-Baca, JA
Published in: Journal of Applied Crystallography
August 1, 2019

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 magneticWollaston prisms at the HB-1 instrument of the High-Flux Isotope Reactor at Oak Ridge National Laboratory, and the achievable resolution is <10 meV.

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Published In

Journal of Applied Crystallography

DOI

EISSN

1600-5767

ISSN

0021-8898

Publication Date

August 1, 2019

Volume

52

Issue

4

Start / End Page

755 / 760

Related Subject Headings

  • Inorganic & Nuclear Chemistry
  • 5104 Condensed matter physics
  • 3406 Physical chemistry
  • 3402 Inorganic chemistry
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Li, F., Shen, J., Parnell, S. R., Thaler, A. N., Matsuda, M., Keller, T., … Fernandez-Baca, J. A. (2019). High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique. Journal of Applied Crystallography, 52(4), 755–760. https://doi.org/10.1107/S1600576719008008
Li, F., J. Shen, S. R. Parnell, A. N. Thaler, M. Matsuda, T. Keller, O. Delaire, R. Pynna, and J. A. Fernandez-Baca. “High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique.” Journal of Applied Crystallography 52, no. 4 (August 1, 2019): 755–60. https://doi.org/10.1107/S1600576719008008.
Li F, Shen J, Parnell SR, Thaler AN, Matsuda M, Keller T, et al. High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique. Journal of Applied Crystallography. 2019 Aug 1;52(4):755–60.
Li, F., et al. “High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique.” Journal of Applied Crystallography, vol. 52, no. 4, Aug. 2019, pp. 755–60. Scopus, doi:10.1107/S1600576719008008.
Li F, Shen J, Parnell SR, Thaler AN, Matsuda M, Keller T, Delaire O, Pynna R, Fernandez-Baca JA. High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique. Journal of Applied Crystallography. 2019 Aug 1;52(4):755–760.
Journal cover image

Published In

Journal of Applied Crystallography

DOI

EISSN

1600-5767

ISSN

0021-8898

Publication Date

August 1, 2019

Volume

52

Issue

4

Start / End Page

755 / 760

Related Subject Headings

  • Inorganic & Nuclear Chemistry
  • 5104 Condensed matter physics
  • 3406 Physical chemistry
  • 3402 Inorganic chemistry
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences