IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v426y2003i6966d10.1038_nature02199.html
   My bibliography  Save this article

Emergence of a molecular Bose–Einstein condensate from a Fermi gas

Author

Listed:
  • Markus Greiner

    (University of Colorado)

  • Cindy A. Regal

    (University of Colorado)

  • Deborah S. Jin

    (National Institute of Standards and Technology)

Abstract

The realization of superfluidity in a dilute gas of fermionic atoms, analogous to superconductivity in metals, represents a long-standing goal of ultracold gas research. In such a fermionic superfluid, it should be possible to adjust the interaction strength and tune the system continuously between two limits: a Bardeen–Cooper–Schrieffer (BCS)-type superfluid (involving correlated atom pairs in momentum space) and a Bose–Einstein condensate (BEC), in which spatially local pairs of atoms are bound together. This crossover between BCS-type superfluidity and the BEC limit has long been of theoretical interest, motivated in part by the discovery of high-temperature superconductors1,2,3,4,5,6,7,8,9,10. In atomic Fermi gas experiments superfluidity has not yet been demonstrated; however, long-lived molecules consisting of locally paired fermions have been reversibly created11,12,13,14,13. Here we report the direct observation of a molecular Bose–Einstein condensate created solely by adjusting the interaction strength in an ultracold Fermi gas of atoms. This state of matter represents one extreme of the predicted BCS–BEC continuum.

Suggested Citation

  • Markus Greiner & Cindy A. Regal & Deborah S. Jin, 2003. "Emergence of a molecular Bose–Einstein condensate from a Fermi gas," Nature, Nature, vol. 426(6966), pages 537-540, December.
    • Handle: RePEc:nat:nature:v:426:y:2003:i:6966:d:10.1038_nature02199
    DOI: 10.1038/nature02199
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature02199
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature02199?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Yuhao Ye & Jinhua Wang & Pan Nie & Huakun Zuo & Xiaokang Li & Kamran Behnia & Zengwei Zhu & Benoît Fauqué, 2024. "Tuning the BCS-BEC crossover of electron-hole pairing with pressure," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    2. Habitzreuter, Marco A. & Rizzatti, Eduardo O. & Barbosa, Marcia C., 2023. "Waterlike density anomaly in fermions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 630(C).
    3. Yusuke Morita & Kosuke Yoshioka & Makoto Kuwata-Gonokami, 2022. "Observation of Bose-Einstein condensates of excitons in a bulk semiconductor," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:426:y:2003:i:6966:d:10.1038_nature02199. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.