Magnetic field control of elastic scattering in a cold gas of fermionic lithium atoms -: art. no. 273202

被引：63

作者：

Jochim, S

Bartenstein, M

Hendl, G

Denschlag, JH

Grimm, R

Mosk, A

Weidemüller, M

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[2] FOM, Inst Plasmafys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands

[3] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 27期

关键词：

D O I：

10.1103/PhysRevLett.89.273202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study elastic collisions in an optically trapped spin mixture of fermionic lithium atoms in the presence of magnetic fields up to 1.5 kG by measuring evaporative loss. Our experiments confirm the expected magnetic tunability of the scattering length by showing the main features of elastic scattering according to recent calculations. We measure the zero crossing of the scattering length at 530(3) G which is associated with a predicted Feshbach resonance at similar to850 G. Beyond the resonance we observe the expected large cross section in the triplet scattering regime.

引用

收藏

页码：273202 / 273202

页数：4

相关论文

共 20 条

[1] High resolution Feshbach spectroscopy of cesium [J].

Chin, C ;

Vuletic, V ;

Kerman, AJ ;

Chu, S .

PHYSICAL REVIEW LETTERS, 2000, 85 (13) :2717-2720

[2] Signatures of resonance superfluidity in a quantum Fermi gas [J].

Chiofalo, ML ;

Kokkelmans, SJJMF ;

Milstein, JN ;

Holland, MJ .

PHYSICAL REVIEW LETTERS, 2002, 88 (09) :4-904024

[3] Stable 85Rb Bose-Einstein condensates with widely tunable interactions [J].

Cornish, SL ;

Claussen, NR ;

Roberts, JL ;

Cornell, EA ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 2000, 85 (09) :1795-1798

[4] Observation of a Feshbach resonance in cold atom scattering [J].

Courteille, P ;

Freeland, RS ;

Heinzen, DJ ;

van Abeelen, FA ;

Verhaar, BJ .

PHYSICAL REVIEW LETTERS, 1998, 81 (01) :69-72

[5]

DIECKMANN K, CONDMAT0207046V2

[6] Atom-molecule coherence in a Bose-Einstein condensate [J].

Donley, EA ;

Claussen, NR ;

Thompson, ST ;

Wieman, CE .

NATURE, 2002, 417 (6888) :529-533

[7] All-optical production of a degenerate Fermi gas [J].

Granade, SR ;

Gehm, ME ;

O'Hara, KM ;

Thomas, JE .

PHYSICAL REVIEW LETTERS, 2002, 88 (12) :4

[8] Resonance superfluidity in a quantum degenerate Fermi gas [J].

Holland, M ;

Kokkelmans, SJJMF ;

Chiofalo, ML ;

Walser, R .

PHYSICAL REVIEW LETTERS, 2001, 87 (12) :1-120406

[9] Elastic and inelastic collisions of 6Li atoms in magnetic and optical traps [J].

Houbiers, M ;

Stoof, HTC ;

McAlexander, WI ;

Hulet, RG .

PHYSICAL REVIEW A, 1998, 57 (03) :R1497-R1500

[10] Observation of Feshbach resonances in a Bose-Einstein condensate [J].

Inouye, S ;

Andrews, MR ;

Stenger, J ;

Miesner, HJ ;

Stamper-Kurn, DM ;

Ketterle, W .

NATURE, 1998, 392 (6672) :151-154