Nanoscale momentum-resolved vibrational spectroscopy

  title={Nanoscale momentum-resolved vibrational spectroscopy},
  author={Fredrik S. Hage and Rebecca J. Nicholls and Jonathan R. Yates and Dougal G. McCulloch and Tracy Clark Lovejoy and Niklas Dellby and Ondrej L. Krivanek and Keith Refson and Quentin M. Ramasse},
  journal={Science Advances},
A widely applicable method for accessing phonon dispersions of materials at high spatial resolution is demonstrated. Vibrational modes affect fundamental physical properties such as the conduction of sound and heat and can be sensitive to nano- and atomic-scale structure. Probing the momentum transfer dependence of vibrational modes provides a wealth of information about a materials system; however, experimental work has been limited to essentially bulk and averaged surface approaches or to… 
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