Crystallization of bosonic quantum Hall states in a rotating quantum gas
Crystallization of bosonic quantum Hall states in a rotating quantum gas
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旋转量子气体中玻色子量子霍尔态的结晶
DOI:
10.1038/s41586-021-04170-2
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发表时间:
2022
期刊:
影响因子:
64.8
通讯作者:
Zwierlein, Martin
中科院分区:
文献类型:
--
作者:
Mukherjee, Biswaroop;Shaffer, Airlia;Patel, Parth B.;Yan, Zhenjie;Wilson, Cedric C.;Crépel, Valentin;Fletcher, Richard J.;Zwierlein, Martin
The dominance of interactions over kinetic energy lies at the heart of strongly correlated quantum matter, from fractional quantum Hall liquids, to atoms in optical lattices and twisted bilayer graphene. Crystalline phases often compete with correlated quantum liquids, and transitions between them occur when the energy cost of forming a density wave approaches zero. A prime example occurs for electrons in high-strength magnetic fields, where the instability of quantum Hall liquids towards a Wigner crystal, , , , –is heralded by a roton-like softening of density modulations at the magnetic length,, –. Remarkably, interacting bosons in a gauge field are also expected to form analogous liquid and crystalline states, , , , , , , –. However, combining interactions with strong synthetic magnetic fields has been a challenge for experiments on bosonic quantum gases,. Here we study the purely interaction-driven dynamics of a Landau gauge Bose–Einstein condensate in and near the lowest Landau level. We observe a spontaneous crystallization driven by condensation of magneto-rotons,, excitations visible as density modulations at the magnetic length. Increasing the cloud density smoothly connects this behaviour to a quantum version of the Kelvin–Helmholtz hydrodynamic instability, driven by the sheared internal flow profile of the rapidly rotating condensate. At long times the condensate self-organizes into a persistent array of droplets separated by vortex streets, which are stabilized by a balance of interactions and effective magnetic forces.
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影响因子:
8.6
作者:
A. Recati;F. Zambelli;S. Stringari
通讯作者:
S. Stringari
影响因子:
8.6
作者:
S. Sinha;G. Shlyapnikov;G. Shlyapnikov
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G. Shlyapnikov
影响因子:
19.6
作者:
Aidelsburger, M.;Lohse, M.;Goldman, N.
通讯作者:
Goldman, N.
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Aftalion;X. Blanc;N. Lerner
通讯作者:
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影响因子:
8.6
作者:
GOLDMAN, VJ;SANTOS, M;CUNNINGHAM, JE
通讯作者:
CUNNINGHAM, JE