Publication: Excitation of coherent phonons in the one-dimensional Bi(114) surface
Excitation of coherent phonons in the one-dimensional Bi(114) surface
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Leuenberger, D., Yanagisawa, H., Roth, S., Dil, J. H., Wells, J. H., Hofmann, P., Osterwalder, J., & Hengsberger, M. (2013). Excitation of coherent phonons in the one-dimensional Bi(114) surface. Physical Review Letters, 110(3), 136806. https://doi.org/10.1103/PhysRevLett.110.136806
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Abstract
We present time-resolved photoemission experiments from a peculiar bismuth surface, Bi(114). The strong one-dimensional character of this surface is reflected in the Fermi surface, which consists of spin-polarized straight lines. Our results show that the depletion of the surface state and the population of the bulk conduction band after the initial optical excitation persist for very long times. The disequilibrium within the hot electron gas along with strong electron-phonon coupling cause a displacive excitation of coherent phonons,
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- Leuenberger, D
- Yanagisawa, H
- Roth, S
- Dil, J H
- Hofmann, P
- Osterwalder, J
- Hengsberger, M
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Leuenberger, D., Yanagisawa, H., Roth, S., Dil, J. H., Wells, J. H., Hofmann, P., Osterwalder, J., & Hengsberger, M. (2013). Excitation of coherent phonons in the one-dimensional Bi(114) surface. Physical Review Letters, 110(3), 136806. https://doi.org/10.1103/PhysRevLett.110.136806
