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https://hdl.handle.net/2440/87340
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Type: | Journal article |
Title: | Persistent molecular superfluid response in doped para-hydrogen clusters |
Author: | Raston, P. Jager, W. Li, H. Le Roy, R. Roy, P. |
Citation: | Physical Review Letters, 2012; 108(25):253402-1-253402-5 |
Publisher: | American Physical Society |
Issue Date: | 2012 |
ISSN: | 0031-9007 1079-7114 |
Statement of Responsibility: | P. L. Raston, W. Jäger, H. Li, R. J. Le Roy, and P.-N. Roy |
Abstract: | Direct observation of superfluid response in para-hydrogen (p-H2) remains a challenge because of the need for a probe that would not induce localization and a resultant reduction in superfluid fraction. Earlier work [H. Li, R. J. Le Roy, P.-N. Roy, and A. R. W. McKellar, Phys. Rev. Lett. 105, 133401 (2010)] has shown that carbon dioxide can probe the effective inertia of p-H2 although larger clusters show a lower superfluid response due to localization. It is shown here that the lighter carbon monoxide probe molecule allows one to measure the effective inertia of p-H2 clusters while maintaining a maximum superfluid response with respect to dopant rotation. Microwave spectroscopy and a theoretical analysis based on Feynman path-integral simulations are used to support this conclusion. |
Rights: | © 2012 American Physical Society |
DOI: | 10.1103/PhysRevLett.108.253402 |
Published version: | http://dx.doi.org/10.1103/physrevlett.108.253402 |
Appears in Collections: | Aurora harvest 7 Physics publications |
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