Rapidly rotating Bose-Einstein condensates in and near the lowest Landau level

V. Schweikhard, I. Coddington, P. Engels, V.P. Mogendorff, E.A. Cornell

Research output: Contribution to journalArticleAcademicpeer-review

315 Citations (Scopus)
127 Downloads (Pure)

Abstract

We create rapidly rotating Bose-Einstein condensates in the lowest Landau level by spinning up the condensates to rotation rates O¿>¿99% of the centrifugal limit for a harmonically trapped gas, while reducing the number of atoms. As a consequence, the chemical potential drops below the cyclotron energy 2¿O. While in this mean-field quantum-Hall regime we still observe an ordered vortex lattice, its elastic shear strength is strongly reduced, as evidenced by the observed very low frequency of Tkachenko modes. Furthermore, the gas approaches the quasi-two-dimensional limit. The associated crossover from interacting- to ideal-gas behavior along the rotation axis results in a shift of the axial breathing mode frequency.
Original languageEnglish
Article number040404
Pages (from-to)040404-1/4
Number of pages4
JournalPhysical Review Letters
Volume92
Issue number4
DOIs
Publication statusPublished - 2004

Fingerprint Dive into the research topics of 'Rapidly rotating Bose-Einstein condensates in and near the lowest Landau level'. Together they form a unique fingerprint.

Cite this