Linked Life Data

19518764

Source:http://linkedlifedata.com/resource/pubmed/id/19518764

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
17
pubmed:dateCreated
2009-6-12
pubmed:abstractText
We present experimental results on a Bose gas in a quasi-2D geometry near the Berezinskii, Kosterlitz, and Thouless (BKT) transition temperature. By measuring the density profile after time of flight and the coherence length, we identify different states of the gas. We observe that the gas develops a bimodal distribution without long range order. In this regime, the gas presents a longer coherence length than the thermal cloud; it is quasicondensed but is not superfluid. Experimental evidence indicates that we also observe the superfluid transition (BKT transition). For a sufficiently long time of flight, we observe a trimodal distribution when the gas has developed a superfluid component.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
May
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
102
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
170401
pubmed:year
2009
pubmed:articleTitle
Observation of a 2D Bose gas: from thermal to quasicondensate to superfluid.
pubmed:affiliation
Atomic Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8424, USA.
pubmed:publicationType
Journal Article