Observation of the Scissors Mode and Evidence for Superfluidity of a Trapped Bose-Einstein Condensed Gas

O. M. Maragò; S. A. Hopkins; J. Arlt; E. Hodby; G. Hechenblaikner; C. J. Foot

Observation of the Scissors Mode and Evidence for Superfluidity of a Trapped Bose-Einstein Condensed Gas

O. M. Maragò, S. A. Hopkins, J. Arlt, E. Hodby, G. Hechenblaikner, C. J. Foot

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Abstract

We report the observation of the scissors mode of a Bose-Einstein condensed gas of 87Rb atoms in a magnetic trap, which gives direct evidence of superfluidity in this system. The scissors mode of oscillation is excited by a sudden rotation of the anisotropic trapping potential. For a gas above Tc (normal fluid) we detect the occurrence of oscillations at two frequencies, with the lower frequency corresponding to the rigid body value of the moment of inertia. Well below Tc the condensate oscillates at a single frequency, without damping, as expected for a superfluid.

Original language	English
Pages (from-to)	2056-2059
Number of pages	3
Journal	Physical Review Letters
Volume	84
Issue number	10
Publication status	Published - 6 Mar 2000

Cite this

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title = "Observation of the Scissors Mode and Evidence for Superfluidity of a Trapped Bose-Einstein Condensed Gas",

abstract = "We report the observation of the scissors mode of a Bose-Einstein condensed gas of 87Rb atoms in a magnetic trap, which gives direct evidence of superfluidity in this system. The scissors mode of oscillation is excited by a sudden rotation of the anisotropic trapping potential. For a gas above Tc (normal fluid) we detect the occurrence of oscillations at two frequencies, with the lower frequency corresponding to the rigid body value of the moment of inertia. Well below Tc the condensate oscillates at a single frequency, without damping, as expected for a superfluid.",

author = "Marag{\`o}, {O. M.} and Hopkins, {S. A.} and J. Arlt and E. Hodby and G. Hechenblaikner and Foot, {C. J.}",

year = "2000",

month = mar,

day = "6",

language = "English",

volume = "84",

pages = "2056--2059",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Observation of the Scissors Mode and Evidence for Superfluidity of a Trapped Bose-Einstein Condensed Gas

AU - Maragò, O. M.

AU - Hopkins, S. A.

AU - Arlt, J.

AU - Hodby, E.

AU - Hechenblaikner, G.

AU - Foot, C. J.

PY - 2000/3/6

Y1 - 2000/3/6

N2 - We report the observation of the scissors mode of a Bose-Einstein condensed gas of 87Rb atoms in a magnetic trap, which gives direct evidence of superfluidity in this system. The scissors mode of oscillation is excited by a sudden rotation of the anisotropic trapping potential. For a gas above Tc (normal fluid) we detect the occurrence of oscillations at two frequencies, with the lower frequency corresponding to the rigid body value of the moment of inertia. Well below Tc the condensate oscillates at a single frequency, without damping, as expected for a superfluid.

AB - We report the observation of the scissors mode of a Bose-Einstein condensed gas of 87Rb atoms in a magnetic trap, which gives direct evidence of superfluidity in this system. The scissors mode of oscillation is excited by a sudden rotation of the anisotropic trapping potential. For a gas above Tc (normal fluid) we detect the occurrence of oscillations at two frequencies, with the lower frequency corresponding to the rigid body value of the moment of inertia. Well below Tc the condensate oscillates at a single frequency, without damping, as expected for a superfluid.

M3 - Article

SN - 0031-9007

VL - 84

SP - 2056

EP - 2059

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

ER -

Observation of the Scissors Mode and Evidence for Superfluidity of a Trapped Bose-Einstein Condensed Gas

Abstract

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