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Antiferromagnetic n...
Antiferromagnetic noise correlations in optical lattices
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- Bruun, Georg (author)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Syljuasen, O. F. (author)
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Pedersen, K. G. L. (author)
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Andersen, B. M. (author)
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Demler, E. (author)
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Sorensen, A. S. (author)
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 80:3
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http://dx.doi.org/10...
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Abstract
Subject headings
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- We analyze how noise correlations probed by time-of-flight experiments reveal antiferromagnetic (AF) correlations of fermionic atoms in two-dimensional and three-dimensional optical lattices. Combining analytical and quantum Monte Carlo calculations using experimentally realistic parameters, we show that AF correlations can be detected for temperatures above and below the critical temperature for AF ordering. It is demonstrated that spin-resolved noise correlations yield important information about the spin ordering. Finally, we show how to extract the spin correlation length and the related critical exponent of the AF transition from the noise.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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