Magnetic properties of a Bose-Einstein condensate
- The Rockefeller University, New York, New York 10021-6399 (United States)
Three hyperfine states of Bose-condensed sodium atoms, recently optically trapped, can be described as a spin-1 Bose gas. We study the behavior of this system in a magnetic field, and construct the phase diagram, where the temperature of the Bose condensation T{sub BEC} increases with magnetic field. In particular the system is ferromagnetic below T{sub BEC} and the magnetization is proportional to the condensate fraction in a vanishing magnetic field. Second derivatives of the magnetization with regard to temperature or magnetic field are discontinuous along the phase boundary. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 304245
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 59; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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