Phonons at the Fe(110) Surface

Author(s)

Tomasz Slezak, J Lazewski, Svetoslav Stankov, K Parlinski, Rüdiger Reitinger, Marcus Rennhofer, Rudolf Rüffer, Bogdan Sepiol, M. Ślęzak, Nika Spiridis, Marcin Zajac, A Chumakov, Jozef Korecki

Abstract

The in-plane density of phonon states of clean Fe(110) surface was measured separately for the first, second, and further atomic monolayers using nuclear inelastic scattering of synchrotron radiation. The results show that atoms of the first layer vibrate with frequencies significantly lower and amplitudes much larger than those in the bulk, and that vibrational spectra along two perpendicular in-surface directions are

different. The vibrations of the second layer are already very close to those of the bulk. The good

agreement of the experimental results and the first-principles calculations allows for detailed understanding of the observed phenomena.

Organisation(s)

Dynamics of Condensed Systems

External organisation(s)

European Synchrotron Radiation Facility ESRF, AGH University of Science and Technology, Polish Academy of Sciences (PAS)

Journal

Physical Review Letters

Volume

99

No. of pages

4

ISSN

0031-9007

DOI

https://doi.org/10.1103/PhysRevLett.99.066103

Publication date

2007

Peer reviewed

Yes

Austrian Fields of Science 2012

103018 Materials physics

Portal url

https://ucris.univie.ac.at/portal/en/publications/phonons-at-the-fe110-surface(aa7478bc-0956-4ef9-bb7f-73c716ef774f).html