Trapping of topological-structural defects in coulomb crystals

Abstract: We study experimentally and theoretically structural defects which are formed during the transition from a laser cooled cloud to a Coulomb crystal, consisting of tens of ions in a linear radio frequency trap. We demonstrate the creation of predicted topological defects (“kinks”) in purely two-dimensional crystals and also find kinks which show novel dynamical features in a regime of parameters not considered before. The kinks are always observed at the center of the trap, showing a large nonlinear localized excitation, and the probability of their occurrence saturates at ∼0.5. Simulations reveal a strong anharmonicity of the kink’s internal mode of vibration, due to the kink’s extension into three dimensions. As a consequence, the periodic Peierls-Nabarro potential experienced by a discrete kink becomes a globally confining potential, capable of trapping one cooled defect at the center of the crystal

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch
• Anmerkungen: Physical review letters. - 110, 13 (2013) , 133004, ISSN: 1079-7114

Beteiligte, Orts- und Zeitangaben

• Ereignis: Veröffentlichung
• (wo): Freiburg
• (wer): Universität
• (wann): 2021
• Urheber: Mielenz, Manuel ; Brox, Andreas Sören Jonathan ; Kahra, Steffen ; Leschhorn, Günther ; Albert, Magnus ; Schätz, Tobias ; Landa, Haggai ; Reznik, Benni

Weitere Informationen

• DOI: 10.1103/PhysRevLett.110.133004
• URN: urn:nbn:de:bsz:25-freidok-1756101
• Rechteinformation: Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 15.08.2025, 07:20 MESZ