Observation of heteronuclear Feshbach resonances in a mixture of bosons and fermions

被引：266

作者：

Inouye, S

Goldwin, J

Olsen, ML

Ticknor, C

Bohn, JL

Jin, DS

机构：

[1] Natl Inst Stand & Technol, JILA, Boulder, CO 80309 USA

[2] Univ Colorado, Boulder, CO 80309 USA

[3] Natl Inst Stand & Technol, Quant Phys Div, Boulder, CO USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.183201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Three magnetic-field induced heteronuclear Feshbach resonances were identified in collisions between bosonic Rb-87 and fermionic K-40 atoms in their absolute ground states. Strong inelastic loss from an optically trapped mixture was observed at the resonance positions of 492, 512, and 543 +/- 2 G. The magnetic-field locations of these resonances place a tight constraint on the triplet and singlet cross-species scattering lengths, yielding (-281 +/- 15)a(0) and (-54 +/- 12)a(0), respectively. The width of the loss feature at 543 G is 3.7 +/- 1.5 G wide; this broad Feshbach resonance should enable experimental control of the interspecies interactions.

引用

收藏

页码：183201 / 1

页数：4

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