Study of transport properties in superconducting junctions of double insulating barrier
In this work we analyze the Tomasch effect in double barrier insulating superconducting N1ISIN2 (N: normal metal, I: insulator and S: superconductor) junctions. From the solution of the Bogoliubov–de Gennes equations we find that the differential conductance presents resonances when the applied volt...
- Autores:
-
Gómez Paez, Shirley
Herrera, William J.
Niño, J. Virgilio
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2009
- Institución:
- Universidad El Bosque
- Repositorio:
- Repositorio U. El Bosque
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.unbosque.edu.co:20.500.12495/5126
- Acceso en línea:
- http://hdl.handle.net/20.500.12495/5126
https://doi.org/10.1016/j.physb.2009.06.110
https://repositorio.unbosque.edu.co
- Palabra clave:
- Superconductivity
Andreev reflection
Differential conductance
ZBCP
Quasiparticle lifetime
- Rights
- openAccess
- License
- Acceso abierto
Summary: | In this work we analyze the Tomasch effect in double barrier insulating superconducting N1ISIN2 (N: normal metal, I: insulator and S: superconductor) junctions. From the solution of the Bogoliubov–de Gennes equations we find that the differential conductance presents resonances when the applied voltage changes. These resonances are originated by the formation of quasibound states in the superconducting region and depend on the symmetry of the pair potential. We develop an analytical model in order to find the quasibound states energies and its lifetimes. This model allows us to calculate the voltage at which each resonance appears and the resonance widths. We calculate and analyze the dependence of the transmission coefficients with the thickness of the superconducting layer. |
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