Artículo
Abstract:
We study a mesoscopic metallic ring threaded by a magnetic flux which varies linearly in time (formula presented) with a formalism based in Baym-Kadanoff-Keldysh nonequilibrium Green functions. We propose a method to calculate the Green functions in real space and we consider an experimental setup to investigate the dynamics of the ring by recourse to a transport experiment. This consists of a single lead connecting the ring to a particle reservoir. We show that different dynamical regimes are attained depending on the ratio (formula presented) with (formula presented) and W the bandwidth of the ring. For moderate lengths of the ring, a stationary regime is achieved for (formula presented) In the opposite case with (formula presented) the effect of Bloch oscillations driven by the induced electric field manifests itself in the transport properties of the system. In particular, we show that in this time-dependent regime a tunneling current oscillating in time with a period (formula presented) can be measured in the lead. We also analyze the resistive effect introduced by inelastic scattering due to the coupling to the external reservoir. © 2002 The American Physical Society.
Registro:
| Documento: | Artículo |
| Título: | Current oscillations in a metallic ring threaded by a time-dependent magnetic flux |
| Autor: | Arrachea, L. |
| Filiación: | Scuola Internazionale Superiore di Studi Avanzati (SISSA), Istituto Nazionale per la Fisica della Materia (INFM) (Unitá di Ricerca Trieste-SISSA), Via Beirut n. 4, Trieste, I-34013, Italy Departamento de Física FCEyN, Universidad de Buenos Aires Pabellón I, Ciudad Universitaria, Buenos Aires, 1428, Argentina |
| Año: | 2002 |
| Volumen: | 66 |
| Número: | 4 |
| Página de inicio: | 1 |
| Página de fin: | 11 |
| DOI: | http://dx.doi.org/10.1103/PhysRevB.66.045315 |
| Título revista: | Physical Review B - Condensed Matter and Materials Physics |
| Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys. |
| ISSN: | 10980121 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v66_n4_p1_Arrachea |
Referencias:
- Chandrasekar, V., (1991) Phys. Rev. Lett., 67, p. 3578
- Gefen, Y., Imry, Y., Azbel, M.Y.A., (1984) Phys. Rev. Lett., 52, p. 129
- Bloch, F., (1928) Z. Phys., 52, p. 555
- Waschke, C., (1993) Phys. Rev. Lett., 70, p. 3319
- Rotvig, J., Jauho, A.P., Smith, H., (1995) Phys. Rev. Lett., 74, p. 1831
- Holthaus, M., Ristow, G., Hone, D., (1995) Phys. Rev. Lett., 75, p. 3914
- Grecchi, V., Sacchetti, A., (1997) Phys. Rev. Lett., 78, p. 4474
- Büttiker, M., Imry, Y., Landauer, R., (1983) Phys. Lett., 96 A, p. 365
- Landauer, R., Büttiker, M., (1985) Phys. Rev. Lett., 54, p. 2049
- Büttiker, M., (1985) Phys. Rev. B, 32, p. R1846
- Yacobi, A., Heiblum, M., Mahalu, D., Shtrikman, H., (1995) Phys. Rev. Lett., 74, p. 4047
- Pastawski, H.M., (1992) Phys. Rev. B, 46, p. 4053
- Jauho, A.P., Wingreen, N., Meir, Y., (1994) Phys. Rev. B, 50, p. 5528
- Cheung, Y., Riedel, E., Gefen, Y., (1989) Phys. Rev. Lett., 62, p. 587
- Rammer, J., Smith, H., (1986) Rev. Mod. Phys., 58, p. 323
- D’Amato, J.L., Pastawski, H.M., (1990) Phys. Rev. B, 41, p. 7411
- Jauho, A.P., Johnsen, K., (1996) Phys. Rev. Lett., 76, p. 4576
- The analytical expression for the Fourier transform is (formula presented), where (formula presented), with (formula presented)
Citas:
---------- APA ----------
(2002) . Current oscillations in a metallic ring threaded by a time-dependent magnetic flux. Physical Review B - Condensed Matter and Materials Physics, 66(4), 1-11.http://dx.doi.org/10.1103/PhysRevB.66.045315
---------- CHICAGO ----------
Arrachea, L. "Current oscillations in a metallic ring threaded by a time-dependent magnetic flux" . Physical Review B - Condensed Matter and Materials Physics 66, no. 4 (2002) : 1-11.http://dx.doi.org/10.1103/PhysRevB.66.045315
---------- MLA ----------
Arrachea, L. "Current oscillations in a metallic ring threaded by a time-dependent magnetic flux" . Physical Review B - Condensed Matter and Materials Physics, vol. 66, no. 4, 2002, pp. 1-11.http://dx.doi.org/10.1103/PhysRevB.66.045315
---------- VANCOUVER ----------
Arrachea, L. Current oscillations in a metallic ring threaded by a time-dependent magnetic flux. Phys. Rev. B Condens. Matter Mater. Phys. 2002;66(4):1-11.http://dx.doi.org/10.1103/PhysRevB.66.045315
