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Resistencia diferencial negativa e histeresis a través de una molécula organometálica desde el cruce a nivel
Rui Liu1, San-Huang Ke, Harold U Baranger
1Departments of Chemistry, Duke University, Durham, North Carolina 27708-0305, USA.
Journal of the American Chemical Society
|May 11, 2006
Resumen
Las moléculas de Diblock pueden exhibir resistencia diferencial negativa (NDR), similar a los puntos cuánticos. Este estudio demuestra NDR e histeresis en un sistema de doble punto molecular cobaltoceno-ferroceno debido al cruce a nivel molecular.
Área de la Ciencia:
- La electrónica molecular es la electrónica molecular.
- Fenómenos cuánticos en los materiales.
Sus antecedentes:
- Las moléculas de Diblock ofrecen potencial para aplicaciones electrónicas.
- Los sistemas cuánticos de doble punto exhiben propiedades electrónicas únicas como la resistencia diferencial negativa (NDR).
Objetivo del estudio:
- Investigar el potencial de las moléculas estructuradas con diblock para la resistencia diferencial negativa (NDR).
- Para explorar las propiedades de transporte electrónico de un sistema molecular de doble punto compuesto de cobaltoceno y ferroceno.
Principales métodos:
- Utilizó la teoría funcional de densidad combinada (DFT) y las técnicas de no equilibrio de la función verde (NEGF).
- Simulación del transporte de electrones a través de un sistema molecular de doble punto.
Principales resultados:
- Resistencia diferencial negativa (NDR) observada en el sistema molecular de doble punto.
- Identificó el cruce a nivel molecular como el mecanismo que conduce a la NDR.
- Histeresis demostrada en las características de corriente-voltaje.
Conclusiones:
- Las moléculas estructuradas con dibloqueo pueden funcionar como sistemas moleculares de doble punto que exhiben NDR.
- Los hallazgos sugieren el potencial para nuevos dispositivos electrónicos basados en moléculas organometálicas.
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