de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Forschungspapier

Molecular semimetallic hydrogen

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons100925

Eremets,  M. I.
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons208983

Drozdov,  A. P.
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons208985

Kong,  P. P.
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons208987

Wang,  H.
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Eremets, M. I., Drozdov, A. P., Kong, P. P., & Wang, H. (2017). Molecular semimetallic hydrogen. Retrieved from https://arxiv.org/abs/1708.05217.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002D-DD35-C
Zusammenfassung
Establishing metallic hydrogen is a goal of intensive theoretical and experimental work since 1935 when Wigner and Hungtinton [1] predicted that insulating molecular hydrogen will dissociate at high pressures and transform to a metal. This metal is predicted to be a superconductor with very high critical temperature [2]. In another scenario, the metallization can be realized through overlapping of electronic bands in molecular hydrogen in the similar 400 - 500 GPa pressure range [3-5]. The calculations are not accurate enough to predict which option will be realized. Our data are consistent with transforms of hydrogen to semimetal by closing the indirect band gap in the molecular phase III at pressure ~ 360 GPa. Above this pressure, the metallic behaviour in the electrical conductivity appears, the reflection significantly increases. With pressure, the electrical conductivity strongly increases as measured up to 440 GPa. The Raman measurements evidence that hydrogen is in the molecular phase III at pressures at least up to 440 GPa. At higher pressures measured up to 480 GPa, the Raman signal gradually disappears indicating further transformation to a good molecular metal or to an atomic state.