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Resonant quasiparticle-ion scattering in anisotropic superfluid 3He

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Salmelin, Riitta
dc.contributor.author Salomaa, M. M.
dc.date.accessioned 2015-05-19T09:01:21Z
dc.date.available 2015-05-19T09:01:21Z
dc.date.issued 1990
dc.identifier.citation Salmelin, Riitta & Salomaa, M. M. 1990. Resonant quasiparticle-ion scattering in anisotropic superfluid 3He. Physical Review B. Volume 41, Issue 7. P. 4142-4163. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.41.4142. en
dc.identifier.issn 1098-0121 (printed)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/16083
dc.description.abstract Low-energy excitations in quantum fluids are most directly encountered by ions. In the superfluid phases of 3He the relevant elementary excitations are Bogoliubov quasiparticles, which undergo repeated scattering off an ion in the presence of a divergent density of states. We present a quantum-mechanical calculation of the resonant 3He quasiparticle-scattering-limited mobility for negative ions in the anisotropic bulk 3A (A phase) and 3P (polar phase) that is exact when the quasiparticles scatter elastically. We develop a numerical scheme to solve the singular equations for quasiparticle-ion scattering in the A and P phases. Both of these superfluid phases feature a uniaxially symmetric order parameter but distinct topology for the magnitude of the energy gap on the Fermi sphere, i.e., points versus lines of nodes. In particular, the perpetual orbital circulation of Cooper pairs in 3A results in a novel, purely quantum-mechanical intrinsic Magnus effect, which is absent in the polar phase, where Cooper pairs possess no spontaneous orbital angular momentum. This is of interest also for transport properties of heavy-fermion superconductors. We discuss the 3He quasiparticle-ion cross sections, which allow one to account for the mobility data with essentially no free parameters. The calculated mobility thus facilitates an introduction of ‘‘ion spectroscopy’’ to extract useful information on fundamental properties of the superfluid state, such as the temperature dependence of the energy gap in 3A. en
dc.format.extent 4142-4163
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society (APS) en
dc.relation.ispartofseries Physical Review B en
dc.relation.ispartofseries Volume 41, Issue 7
dc.rights © 1990 American Physical Society (APS). http://www.aps.org/ en
dc.subject.other Physics en
dc.title Resonant quasiparticle-ion scattering in anisotropic superfluid 3He en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder American Physical Society (APS)
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Neurotieteen ja lääketieteellisen tekniikan laitos fi
dc.contributor.department Department of Neuroscience and Biomedical Engineering en
dc.subject.keyword quantum fluids en
dc.subject.keyword ions en
dc.subject.keyword Bogoliubov quasiparticles en
dc.subject.keyword quantum-mechanical calculations en
dc.identifier.urn URN:NBN:fi:aalto-201505192733
dc.type.dcmitype text en
dc.identifier.doi 10.1103/physrevb.41.4142
dc.type.version Final published version en

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