Helium-Iron Compounds at Terapascal Pressures.
| cam.issuedOnline | 2018-07-03 | |
| dc.contributor.author | Monserrat, Bartomeu | |
| dc.contributor.author | Martinez-Canales, Miguel | |
| dc.contributor.author | Needs, Richard J | |
| dc.contributor.author | Pickard, Chris J | |
| dc.contributor.orcid | Monserrat Sanchez, Bartomeu [0000-0002-4233-4071] | |
| dc.contributor.orcid | Needs, Richard [0000-0002-5497-9440] | |
| dc.contributor.orcid | Pickard, Christopher [0000-0002-9684-5432] | |
| dc.date.accessioned | 2018-10-10T05:17:15Z | |
| dc.date.available | 2018-10-10T05:17:15Z | |
| dc.date.issued | 2018-07-06 | |
| dc.description.abstract | We 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.medium | ||
| dc.identifier.doi | 10.17863/CAM.30736 | |
| dc.identifier.eissn | 1079-7114 | |
| dc.identifier.issn | 0031-9007 | |
| dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/283368 | |
| dc.language | eng | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society (APS) | |
| dc.publisher.url | http://dx.doi.org/10.1103/PhysRevLett.121.015301 | |
| dc.subject | cond-mat.mtrl-sci | |
| dc.subject | cond-mat.mtrl-sci | |
| dc.subject | astro-ph.EP | |
| dc.title | Helium-Iron Compounds at Terapascal Pressures. | |
| dc.type | Article | |
| dcterms.dateAccepted | 2018-06-01 | |
| prism.issueIdentifier | 1 | |
| prism.publicationDate | 2018 | |
| prism.publicationName | Phys Rev Lett | |
| prism.startingPage | 015301 | |
| prism.volume | 121 | |
| pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/P034616/1) | |
| pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/F032773/1) | |
| pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/P022596/1) | |
| rioxxterms.licenseref.startdate | 2018-07 | |
| rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
| rioxxterms.type | Journal Article/Review | |
| rioxxterms.version | AM | |
| rioxxterms.versionofrecord | 10.1103/PhysRevLett.121.015301 |
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