Abstract:
We have studied the relaxation and dephasing processes in a superconducting quantum point contact induced by the interaction with an electromagnetic environment. Based on a density matrix approach we obtain the rates for the dissipative dynamics as function of the transmission, the phase difference on the contact, and the external impedance. Our calculation allows us to determine the appropriate range of parameters for the observation of coherent oscillations in the current through the contact.
Registro:
Documento: |
Artículo
|
Título: | Controlled dephasing of Andreev states in superconducting quantum point contacts |
Autor: | Despósito, M.A.; Levy Yeyati, A. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Departamento de Física de la Materia Condensada C-V. Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, E-28049, Spain
|
Palabras clave: | article; calculation; conductor; density; dynamics; electromagnetic field; quantum mechanics; superconductor |
Año: | 2001
|
Volumen: | 64
|
Número: | 14
|
Página de inicio: | 1405111
|
Página de fin: | 1405114
|
Título revista: | Physical Review B - Condensed Matter and Materials Physics
|
Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys.
|
ISSN: | 01631829
|
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito |
Referencias:
- Furusaki, A., Tsukada, M., (1990) Physica B, 165-166, p. 967
- Beenakker, C.W.J., (1991) Phys. Rev. Lett., 67, p. 3836
- Scheer, E., (1997) Phys. Rev. Lett., 78, p. 3535
- Scheer, E., (1998) Nature (London), 394, p. 154
- Gorelik, L.Y., (1998) Phys. Rev. Lett., 81, p. 2538
- Levy Yeyati, A., Cuevas, J.C., Martín-Rodero, A., (1995) Photons and Local Probes, Vol. 300 of NATO Advanced Study Institute, Series E: Applied Sciences, 300. , edited by O. Marti and R. Möller (Kluwer, Dordrecht)
- Nakamura, Y., (2000) Physica B, 280, p. 405
- Bouchiat, V., (1999) J. Supercond., 12, p. 789
- Lundin, N.I., Galperin, Y.M., (2001) Phys. Rev. B, 63, p. 094505
- Ivanov, D.A., Feigel'man, M.V., (1999) Phys. Rev. B, 59, p. 8444
- Ingold, G.L., Nazarov, Yu.V., (1991) Single Charge Tunneling, Vol. 294 of NATO Advanced Study Institute, Series B: Physics, 294. , edited by H. Grabert anal M.H. Devoret (Plenum, New York)
- Chang, T.M., Skinner, J.L., (1993) Physica A, 193, p. 483
- note; Martín-Rodero, A., Levy Yeyati, A., García-Vidal, F.J., (1996) Phys. Rev. B, 53, p. 8891
- Averin, D., Imam, H.T., (1996) Phys. Rev. Lett., 76, p. 3814
- Goffman, M.F., (2000) Phys. Rev. Lett., 85, p. 170
- Tinkam, M., (1996) Introduction to Superconductivity, , McGraw-Hill, New York
- Urbina, C., private communication; Gardiner, C.W., (1991) Quantum Noise, , Springer-Verlag, Heidelberg
Citas:
---------- APA ----------
Despósito, M.A. & Levy Yeyati, A.
(2001)
. Controlled dephasing of Andreev states in superconducting quantum point contacts. Physical Review B - Condensed Matter and Materials Physics, 64(14), 1405111-1405114.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito [ ]
---------- CHICAGO ----------
Despósito, M.A., Levy Yeyati, A.
"Controlled dephasing of Andreev states in superconducting quantum point contacts"
. Physical Review B - Condensed Matter and Materials Physics 64, no. 14
(2001) : 1405111-1405114.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito [ ]
---------- MLA ----------
Despósito, M.A., Levy Yeyati, A.
"Controlled dephasing of Andreev states in superconducting quantum point contacts"
. Physical Review B - Condensed Matter and Materials Physics, vol. 64, no. 14, 2001, pp. 1405111-1405114.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito [ ]
---------- VANCOUVER ----------
Despósito, M.A., Levy Yeyati, A. Controlled dephasing of Andreev states in superconducting quantum point contacts. Phys. Rev. B Condens. Matter Mater. Phys. 2001;64(14):1405111-1405114.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito [ ]