Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.086103
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Funding
- U.S. Department of Energy [DE-FG02-85ER45222]
- EPSRC
- Engineering and Physical Sciences Research Council [EP/E004962/1] Funding Source: researchfish
- EPSRC [EP/E004962/1] Funding Source: UKRI
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We report measurements of the acoustic and optical phason dispersion curves associated with the lattice of partial dislocations on the reconstructed (111) surface of gold. Our measurements of these low energy (<0.5 meV) weakly dispersive modes have been enabled by the very high resolution of the novel helium spin-echo technique. The results presented here constitute the first measurement of the phason dispersion of misfit dislocations, and possibly of excitations associated with any type of crystalline dislocations. DOI: 10.1103/PhysRevLett.110.086103
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