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dc.contributor.authorMonserrat Sanchez, Bartomeu
dc.contributor.authorMartinez-Canales, Miguel
dc.contributor.authorNeeds, Richard
dc.contributor.authorPickard, Christopher
dc.date.accessioned2018-10-10T05:17:15Z
dc.date.available2018-10-10T05:17:15Z
dc.date.issued2018-07-06
dc.identifier.issn0031-9007
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/283368
dc.description.abstractWe investigate the binary phase diagram of helium and iron using first-principles calculations. We find that helium, which is a noble gas and inert at ambient conditions, forms stable crystalline compounds with iron at terapascal pressures. A FeHe compound becomes stable above 4 TPa, and a FeHe_{2} compound above 12 TPa. Melting is investigated using molecular dynamics simulations, and a superionic phase with sublattice melting of the helium atoms is predicted. We discuss the implications of our predicted helium-iron phase diagram for interiors of giant (exo)planets and white dwarf stars.
dc.format.mediumPrint
dc.languageeng
dc.publisherAmerican Physical Society (APS)
dc.titleHelium-Iron Compounds at Terapascal Pressures.
dc.typeArticle
prism.issueIdentifier1
prism.publicationDate2018
prism.publicationNamePhys Rev Lett
prism.startingPage015301
prism.volume121
dc.identifier.doi10.17863/CAM.30736
dcterms.dateAccepted2018-06-01
rioxxterms.versionofrecord10.1103/PhysRevLett.121.015301
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-07
dc.contributor.orcidMonserrat Sanchez, Bartomeu [0000-0002-4233-4071]
dc.contributor.orcidNeeds, Richard [0000-0002-5497-9440]
dc.contributor.orcidPickard, Christopher [0000-0002-9684-5432]
dc.identifier.eissn1079-7114
dc.publisher.urlhttp://dx.doi.org/10.1103/PhysRevLett.121.015301
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P034616/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/F032773/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P022596/1)
cam.issuedOnline2018-07-03


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