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Resistivity saturation in metallic liquids above a dynamical crossover temperature observed in measurements aboard the International Space Station

Van Hoesen, D.C. and Gangopadhyay, A. K. and Lohöfer, G. and Sellers, M.E. and Pueblo, C.E. and Koch, S. and Galenko, P.K. and Kelton, K.F. (2019) Resistivity saturation in metallic liquids above a dynamical crossover temperature observed in measurements aboard the International Space Station. Physical Review Letters, 123, pp. 226601-1. American Physical Society. DOI: 10.1103/PhysRevLett.123.226601 ISSN 0031-9007

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Abstract

Although a resistivity saturation (minimum conductivity) is often observed in disordered metallic solids, such phenomena in the corresponding liquids are not known. Here we report a saturation of the electrical resistivity in Zr64Ni36 and Cu50Zr50 liquids above a dynamical crossover temperature for the viscosity (TA). The measurements were made for the levitated liquids under the microgravity conditions of the International Space Station. Based on recent molecular dynamics simulations, the saturation is likely due to the ineffectiveness of electron-phonon scattering above TA when the phonon lifetime becomes too short compared to the electron relaxation time. This is different from the conventional resistivity saturation mechanisms in solids.

Item URL in elib:https://elib.dlr.de/131492/
Document Type:Article
Title:Resistivity saturation in metallic liquids above a dynamical crossover temperature observed in measurements aboard the International Space Station
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Van Hoesen, D.C.Department of Physics, Center for Materials Innovation, Washington University, St. Louis, Missouri 63130, USAUNSPECIFIED
Gangopadhyay, A. K.Department of Physics, Center for Materials Innovation, Washington University, St. Louis, Missouri 63130, USAUNSPECIFIED
Lohöfer, G.Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt, 51170 Köln, GermanyUNSPECIFIED
Sellers, M.E.Department of Physics, Center for Materials Innovation, Washington University, St. Louis, Missouri 63130, USAUNSPECIFIED
Pueblo, C.E.Department of Physics, Center for Materials Innovation, Washington University, St. Louis, Missouri 63130, USAUNSPECIFIED
Koch, S.Otto-Schott-Institut für Materialforschung, Friedrich-Schiller-Universität Jena, 07743 Jena, GermanyUNSPECIFIED
Galenko, P.K.Otto-Schott-Institut für Materialforschung, Friedrich-Schiller-Universität Jena, 07743 Jena, GermanyUNSPECIFIED
Kelton, K.F.Department of Physics, Center for Materials Innovation, Washington University, St. Louis, Missouri 63130, USAUNSPECIFIED
Date:2019
Journal or Publication Title:Physical Review Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:123
DOI :10.1103/PhysRevLett.123.226601
Page Range:pp. 226601-1
Publisher:American Physical Society
ISSN:0031-9007
Status:Published
Keywords:Metallic liquid, electrical resistivity, International Space Station
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialforschung und Mikrogravitation (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Lohöfer, Georg
Deposited On:11 Dec 2019 14:40
Last Modified:11 Dec 2019 14:40

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