Phonon-Assisted Electronic Transport through Double Quantum Dot System Coupled to Ferromagnetic Leads

• Authors: P. Trocha , W. Rudziński
• Languages of publication: EN

Abstracts

EN

Phonon-assisted electronic tunneling is studied through a double quantum dot coupled in parallel to ferromagnetic electrodes. The current-voltage characteristics for the system are derived within the nonequilibrium Green function technique based on equation of motion. It is found that additional phonon-induced resonance peaks appear in the spectral function on both sides of the main resonances corresponding to the quantum dot energy levels. It is shown that the "molecular-like" resonances are reproduced in the phonon side bands in the differential conductance. A significant phonon-induced enhancement of tunnel magnetoresistance as well as tunnel magnetoresistance oscillations are also predicted.

Keywords

EN

72.25.Mk; 73.23.Hk; 73.63.Kv

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 72.25.Mk: Spin transport through interfaces
• 73.63.Kv: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 5
• Pages: 843-845

Dates

published

2013-11

Contributors

author

P. Trocha

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

W. Rudziński

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

References

• [1] X. Lu, J. Wang, C.-Q. Wu, Eur. Phys. J. B 49, 325 (2006)
• [2] M. Bagheri Tagani, H. Rahimpour Soleimani, Phys. Scr. 86, 035706 (2012)
• [3] C. Wang, J. Ren, B.W. Li, Q.H. Chen, Eur. Phys. J. B 85, 110 (2012)
• [4] H. Park, J. Park, A.K.L. Lim, E.H. Anderson, A.P. Alivisatos, P.L. McEuen, Nature 407, 57 (2000)
• [5] E.M. Weig, R.H. Blick, T. Brandes, J. Kirschbaum, W. Wegscheider, M. Bichler, J.P. Kotthaus, Phys. Rev. Lett. 92, 046804 (2004)
• [6] R. Leturcq, C. Stampfer, K. Inderbitzin, L. Durrer, C. Hierold, E. Mariant, M.G. Schultz, F. von Oppen, K. Ensslin, Nat. Phys. 5, 327 (2009)
• [7] P. Trocha, J. Barnaś, Phys. Rev. B 76, 165432 (2007)
• [8] G.D. Mahan, Many-Particle Physics, Plenum Press, New York 2000
• [9] H. Haug, A.-P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors, Springer-Verlag, Berlin 1996
• [10] S.-N. Zhang, W. Pei, T.-F. Fang, Q.-F. Sun, Phys. Rev. B 86, 104513 (2012)
• [11] F.J. Kaiser, S. Kohler, P. Hänggi, M. Malecha, J. Ebbecke, A. Wixforth, H. Schumacher, B. Kästner, D. Reuter, A.D. Wieck, J. Phys., Condens. Matter 20, 374108 (2008)
• [12] W. Rudziński, J. Phys., Condens. Matter 20, 275214 (2008)

Identifiers

DOI

10.12693/APhysPolA.124.843