| Sodium: a charge-transfer insulator at high pressures. | |
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MedLine Citation:
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PMID: 20867123 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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By first-principles methods we analyze the optical response of transparent dense sodium as a function of applied pressure. We discover an unusual kind of charge-transfer exciton that proceeds from the interstitial distribution of valence electrons. The absorption spectrum is strongly anisotropic, which, just at pressures above the metal-insulator transition, manifests as sodium being optically transparent in one direction but reflective in the other. This result provides key information about the crystal structure of transparent sodium, a new unconventional inorganic electride. |
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Authors:
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Matteo Gatti; Ilya V Tokatly; Angel Rubio |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-05-27 |
Journal Detail:
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Title: Physical review letters Volume: 104 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-09-27 Completed Date: 2011-01-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 216404 Citation Subset: IM |
Affiliation:
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Nano-Bio Spectroscopy Group, Departamento Física de Materiales, Universidad del País Vasco, Centro de Física de Materiales CSIC-UPV/EHU-MPC and DIPC, Avenida Tolosa 72, E-20018 San Sebastián, Spain. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Absorption Crystallization Electron Transport Models, Molecular Models, Theoretical Molecular Conformation Optical Processes Pressure* Sodium / chemistry* Spectrum Analysis |
| Chemical | |
Reg. No./Substance:
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7440-23-5/Sodium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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