Thermometry and Refrigeration in a Two-Component Mott Insulator of Ultracold Atoms

Author(s)
Weld, David M.; Miyake, Hirokazu; Medley, Patrick M.; Pritchard, David E.; Ketterle, Wolfgang
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Abstract
Interesting spin Hamiltonians can be realized with ultracold atoms in a two-component Mott insulator (2CMI) [Adv. Phys. 56, 243 (2007); Rev. Mod. Phys. 80, 885 (2008)]. It was recently demonstrated that the application of a magnetic field gradient to the 2CMI enables new techniques of thermometry [Phys. Rev. Lett. 103, 245301 (2009)] and adiabatic cooling [e-print arXiv:1006.4674]. Here we present a theoretical description which provides quantitative analysis of these two techniques. We show that adiabatic reduction of the field gradient is capable of cooling below the Curie or Néel temperature of certain spin-ordered phases.
Date issued
2010-11
URI
http://hdl.handle.net/1721.1/61678
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms
Journal
Physical Review A
Publisher
American Physical Society
Citation
Weld, David M. et al. “Thermometry and refrigeration in a two-component Mott insulator of ultracold atoms.” Physical Review A 82.5 (2010): 051603. © 2010 The American Physical Society.
Version: Final published version
ISSN
1050-2947
1050-4729
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