Phonon spectroscopy with sub-meV resolution by femtosecond x-ray diffuse scattering
Citations Over TimeTop 10% of 2015 papers
Abstract
We present a reconstruction of the transverse acoustic phonon dispersion of germanium from femtosecond time-resolved x-ray diffuse scattering measurements at the Linac Coherent Light Source. We demonstrate an energy resolution of 0.3 meV with a momentum resolution of $0.01\phantom{\rule{0.28em}{0ex}}{\mathrm{nm}}^{\ensuremath{-}1}$ using 10-keV x rays with a bandwidth of $\ensuremath{\sim}1\phantom{\rule{0.28em}{0ex}}\mathrm{eV}$. This high resolution was achieved simultaneously for a large section of reciprocal space including regions closely following three of the principal symmetry directions. The phonon dispersion was reconstructed with less than 3 h of measurement time, during which neither the x-ray energy, the sample orientation, nor the detector position were scanned. These results demonstrate how time-domain measurements can complement conventional frequency domain inelastic-scattering techniques.
Related Papers
- → Reaction dynamics studiedviafemtosecond X-ray liquidography at X-ray free-electron lasers(2022)24 cited
- → Contribution of Lattice Defects to the Intensity of Quasi-Forbidden X-ray Reflections of Diamond: Comparison of X-Ray Topography and Infrared Spectroscopy Data(2020)3 cited
- → Meeting Report: Novel Approaches to Soft X-ray Spectroscopy: Scanning Transmission X-ray Microscopy and Ambient Pressure X-ray Photoelectron Spectroscopy(2006)1 cited
- → Femtosecond time resolution in X-ray spectroscopy(2002)2 cited
- Measurement of Physical Constants with An X-Ray Three-Crystal Spectrometer : REFINED SPECTROSCOPY, X-RAY OPTICS AND INSTRUMENTATION(1978)