Noise Enhancement due to Telegraphic Switching in a Two-Level Quantum Dot Coupled to Spin-Polarized Leads

• Authors: K. Ptaszyński
• Languages of publication: EN

Abstracts

EN

Current fluctuations in a two-level quantum dot coupled to the spin-polarized leads are studied by means of the Markovian master equation. It is shown, that transitions between spin configurations of the system cause switching between different current channels, which generates the super-Poissonian noise enhancement and the correlation between subsequent waiting times separating the successive tunneling events.

Keywords

EN

72.70.+m; 73.23.Hk; 73.63.Kv

Discipline

• 73.63.Kv: Quantum dots
• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 72.70.+m: Noise processes and phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 3
• Pages: 526-528

Dates

published

2018-03

Contributors

author

K. Ptaszyński

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

• [1] B.R. Bułka, Phys. Rev. B 62, 1186 (2000), doi: 10.1103/PhysRevB.62.1186
• [2] W. Belzig, Phys. Rev. B 71, 161301(R) (2005), doi: 10.1103/PhysRevB.71.161301
• [3] J. P. Cascales, J.-Y. Hong, I. Martinez, M.-T. Lin, T. Szczepański, V.K. Dugaev, J. Barnaś, F. G. Aliev, Appl. Phys. Lett. 105, 233302 (2014), doi: 10.1063/1.4903739
• [4] K. Ptaszyński, Phys. Rev. B 95, 045306 (2017), doi: 10.1103/PhysRevB.95.045306
• [5] S.A. Gurvitz, Ya.S. Prager, Phys. Rev. B 53, 15932 (1996), doi: 10.1103/PhysRevB.53.15932
• [6] D. A. Bagrets, Yu. V. Nazarov, Phys. Rev. B 67, 085316 (2003), doi: 10.1103/PhysRevB.67.085316
• [7] T. Brandes, Ann. Phys. (Berlin) 17, 477 (2008), doi: 10.1002/andp.200810306
• [8] M. Bruderer, L.D. Contreras-Pulido, M. Thaller, L. Sironi, D. Obreschkow, M.B. Plenio, New J. Phys. 16, 033030 (2015), doi: 10.1088/1367-2630/16/3/033030
• [9] A.A. Budini, Phys. Rev. E 84, 011141 (2011), doi: 10.1103/PhysRevE.84.011141
• [10] S. Gustavsson, R. Leturcq, M. Studer, I. Shorubalko, T. Ihn, K. Ensslin, D.C. Driscoll, A.C. Gossard, Surf. Sci. Rep. 64, 191 (2009), doi: 10.1016/j.surfrep.2009.02.001

Identifiers

DOI

10.12693/APhysPolA.133.526