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APS » Journals » Phys. Rev. B » Volume 74 » Issue 17
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Phys. Rev. B 74, 174522 (2006) [10 pages]

Local superfluidity in inhomogeneous quantum fluids

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Yongkyung Kwon1,2, Francesco Paesani2,*, and K. Birgitta Whaley2
1Department of Physics, Konkuk University, Seoul 143-701, Korea
2Department of Chemistry and Pitzer Center for Theoretical Chemistry, University of California, Berkeley, California 94720, USA

Received 4 January 2006; revised 26 September 2006; published 30 November 2006

A path integral estimator is presented for the local superfluid response at impurities and interfaces in quantum fluids. The estimator is shown to provide a consistent analysis for the rotational response in inhomogeneous Bose systems. Applications are made to the response of superfluid helium in highly structured solvation layers around small linear molecules (CO2 and OCS) and around a large planar molecule (phthalocyanine) in helium clusters of variable size.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.74.174522
DOI:
10.1103/PhysRevB.74.174522
PACS:
36.40.Ei, 61.46.−w, 67.90.+z

*Present address: Department of Chemistry and Center for Biophysical Modeling and Simulation, University of Utah, Salt Lake City, Utah 84112, USA.

 
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