Hannover 2016 – scientific programme
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A: Fachverband Atomphysik
A 9: Ultra-cold atoms, ions and BEC (with Q)
A 9.28: Poster
Monday, February 29, 2016, 16:30–19:00, Empore Lichthof
Spectroscopy of Discrete Solitons in Coulomb Crystals — •Jonathan Brox1, Miriam Bujak1, Philip Kiefer1, Isabelle Schmager1, Haggai Landa2, and Tobias Schaetz1 — 1Atom-, Molekül- und optische Physik, Physikalisches Institut, Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg — 2LPTMS, Université Paris Sud, Orsay, France
We study structural defects (kinks) which are formed during the transition from a laser cooled cloud of Mg-Ions to a Coulomb crystal [1]. The occurrence of these structures is investigated in dependence of crystal size and axial as well as radial confinement.
Ion crystals with such structural defects feature localized vibrational modes in the spectrum of phonons [2]. We present first results on the spectroscopy of vibrational modes of the Coulomb crystal.
[1] M. Mielenz et al., Phys. Rev. Lett. 110, 133004 (2013)
[2] H. Landa et al., New J. Phys. 15, 093003 (2013)