Document Detail


Sodium: a charge-transfer insulator at high pressures.
MedLine Citation:
PMID:  20867123     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Matteo Gatti; Ilya V Tokatly; Angel Rubio
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-05-27
Journal Detail:
Title:  Physical review letters     Volume:  104     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-09-27     Completed Date:  2011-01-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  216404     Citation Subset:  IM    
Affiliation:
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:
Absorption
Crystallization
Electron Transport
Models, Molecular
Models, Theoretical
Molecular Conformation
Optical Processes
Pressure*
Sodium / chemistry*
Spectrum Analysis
Chemical
Reg. No./Substance:
7440-23-5/Sodium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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