Electron mass in dilute nitrides and its anomalous dependence on hydrostatic pressure.
Phys Rev Lett
; 98(14): 146402, 2007 Apr 06.
Article
em En
| MEDLINE
| ID: mdl-17501294
ABSTRACT
The dependence of the electron mass on hydrostatic pressure P in N-diluted GaAs1-xNx (x=0.10% and 0.21%) is investigated by magnetophotoluminescence. Exceedingly large fluctuations (up to 60%/kbar) in the electron mass with increasing P are found. These originate from a pressure-driven tuning of the hybridization degree between the conduction band minimum and specific nitrogen-related states. Present results suggest a hierarchy between different nitrogen complexes as regards the extent of the perturbation these complexes exert on the electronic properties of the GaAs host.
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MEDLINE
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article