Andreev Transport in Double Quantum Dot Cooper Pair Splitters in the Presence of External Magnetic Field

• Authors: P. Trocha , I. Weymann
• Languages of publication: EN

Abstracts

EN

The effect of external magnetic field on the transport properties of double quantum dots coupled to normal and superconducting leads is studied by means of the real-time diagrammatic technique in the sequential tunneling regime. This device works as a gate-controlled Cooper pair splitter. We focus on the transport regime where the current is blocked due to the spin triplet blockade. It is shown that external magnetic field can modify the Andreev current and differential conductance. In particular, magnetic field can suppress the negative differential conductance associated with the triplet blockade.

Keywords

EN

73.23.-b; 73.21.La; 74.45.+c

Discipline

• 74.45.+c: Proximity effects; Andreev reflection; SN and SNS junctions
• 73.23.-b: Electronic transport in mesoscopic systems
• 73.21.La: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 502-504

Dates

published

2015-02

Contributors

author

P. Trocha

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

author

I. Weymann

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

References

• [1] A. Martin-Rodero, A. Levy Yeyati, Adv. Phys. 60, 899 (2011), doi: 10.1080/00018732.2011.624266
• [2] D. Beckmann, H.B. Weber, H. v. Löhneysen, Phys. Rev. Lett. 93, 197003 (2004), doi: 10.1103/PhysRevLett.93.197003
• [3] S. Russo, M. Kroug, T.M. Klapwijk, A.F. Morpurgo, Phys. Rev. Lett. 95, 027002 (2005), doi: 10.1103/PhysRevLett.92.027002
• [4] D. Futterer, M. Governale, M. G. Pala, J. König, Phys. Rev. B 79, 054505 (2009), doi: 10.1103/PhysRevB.79.054505
• [5] B. Sothmann, D. Futterer, M. Governale, J. König, Phys. Rev. B 82, 094514 (2010), doi: 10.1103/PhysRevB.82.094514
• [6] J. Eldridge, M.G. Pala, M. Governale, J. König, Phys. Rev. B 82, 184507 (2010), doi: 10.1103/PhysRevB.82.184507
• [7] L. Hofstetter, A. Geresdi, M. Aagesen, J. Nygå rd, C. Schönenberger, S. Csonka, Phys. Rev. Lett. 104, 246804 (2010), doi: 10.1103/PhysRevLett.104.246804
• [8] D. Chevallier, J. Rech, T. Jonckheere, T. Martin, Phys. Rev. B 83, 125421 (2011), doi: 10.1103/PhysRevB.83.125421
• [9] J. Rech, D. Chevallier, T. Jonckheere, T. Martin, Phys. Rev. B 85, 035419 (2012), doi: 10.1103/PhysRevB.85.035419
• [10] K.P. Wójcik, I. Weymann, Phys. Rev. B 89, 165303 (2014), doi: 10.1103/PhysRevB.89.165303
• [11] I. Weymann, P. Trocha, Phys. Rev. B 89, 115305 (2014), doi: 10.1103/PhysRevB.89.115305
• [12] P. Trocha, J. Barnaś, Phys. Rev. B 89, 245418 (2014), doi: 10.1103/PhysRevB.89.245418
• [13] A.F. Andreev, Zh. Eksp. Teor. Fiz. 46, 1823 (1964) [Sov. Phys. JETP 19, 1228 (1964)]
• [14] L. Hofstetter, S. Csonka, J. Nygå rd, C. Schönenberger, Nature 461, 960 (2010), doi: 10.1038/nature08432
• [15] L.G. Herrmann, F. Portier, P. Roche, A. Levy Yeyati, T. Kontos, C. Strunk, Phys. Rev. Lett. 104, 026801 (2010), doi: 10.1103/PhysRevLett.104.026801
• [16] L. Hofstetter, S. Csonka, A. Baumgartner, G. Fülöp, S. d'Hollosy, J. Nygå rd, C. Schönenberger, Phys. Rev. Lett. 107, 136801 (2011), doi: 10.1103/PhysRevLett.107.136801
• [17] S. de Franceschi, L.P. Kouwenhoven, C. Schönenberger, W. Wernsdorfer, Nat. Nanotech. 5, 703 (2011), doi: 10.1038/nnano.2010.173
• [18] A.V. Rozhkov, D.P. Arovas, Phys. Rev. B 62, 6687 (2000), doi: 10.1103/PhysRevB.62.6687
• [19] H. Schoeller, G. Schön, Phys. Rev. B 50, 18436 (1994), doi: 10.1103/PhysRevB.50.18436
• [19a] J. König, J. Schmid, H. Schoeller, G. Schön, Phys. Rev. B 54, 16820 (1996), doi: 10.1103/PhysRevB.54.16820
• [20] M. Governale, M. G. Pala, J. König, Phys. Rev. B 77, 134513 (2008), doi: 10.1103/PhysRevB.77.134513
• [21] I. Weymann, Phys. Rev. B 78, 045310 (2008), doi: 10.1103/PhysRevB.78.045310

Identifiers

DOI

10.12693/APhysPolA.127.502