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The peaked structure of phonon density of states of a confined superfluid - a theoretical prediction, and discussions regarding its experimental probe
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
2000 (English)In: JOURNAL DE PHYSIQUE IV, ISSN 1155-4339, Vol. 10, no P7, 181-184 Language: English p.Article in journal (Refereed) Published
Abstract [en]

We report on an exact, first principles result which shows that when the superfluid of He-4 is spatially confined, gaps are created in the phonon excitation energy and that the phonon density of states (PDOS) presents sharp peaks positioned at the gap edg

Place, publisher, year, edition, pages
E D P SCIENCES , 2000. Vol. 10, no P7, 181-184 Language: English p.
Keyword [en]
TEMPERATURE-DEPENDENCE; EXCITATIONS
Identifiers
URN: urn:nbn:se:uu:diva-37121OAI: oai:DiVA.org:uu-37121DiVA: diva2:65020
Note
Addresses: Zheng-Johansson JX, Zheng Johansson Publishing, Stockholmsvagen 14, S-61137 Nykoping, Sweden. Univ Uppsala, Dept Phys, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden. Linkoping Univ, Dept Phys, Theoret Phys Grp, S-58183 Linkoping, Sweden.Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-01-14

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