Transport through Single-Wall Carbon Nanotubes Weakly Coupled to External Leads

• Authors: I. Weymann , S. Krompiewski , J. Barnaś
• Languages of publication: EN

Abstracts

EN

We consider transport properties of single-wall metallic carbon nanotubes weakly coupled to external leads. In particular, we analyze the conductance and shot noise of nanotubes coupled to nonmagnetic leads and show that the shot noise may become super-Poissonian depending on the ground state of the nanotube. In addition, we also show that when the nanotube is coupled to one ferromagnetic and one nonmagnetic lead, it can operate as a gate-controlled spin diode.

Keywords

EN

72.25.Mk; 73.63.Kv; 85.75.-d; 73.23.Hk

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 72.25.Mk: Spin transport through interfaces
• 73.63.Kv: Quantum dots
• 85.75.-d: Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields

• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 296-298

Dates

published

2009-01

Contributors

author

I. Weymann

• Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
• Theoretical Physics Department, Budapest University of Technology and Economics, H-1521 Budapest, Hungary

author

S. Krompiewski

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

author

J. Barnaś

• Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

• 1. R. Saito, M.S. Dresselhaus, G. Dresselhaus, Physical Properties of Carbon Nanotubes, Imperial College Press, London 1998
• 2. M.P. Anantram, F. Leonard, Rep. Prog. Phys. 69, 507 (2006)
• 3. W. Liang, M. Bockrath, H. Park, Phys. Rev. Lett. 88, 126801 (2002)
• 4. S. Sahoo, T. Kontos, J. Furer, C. Hoffmann, M. Gräber, A. Cottet, C. Schönenberger, Nature Phys. 1, 102 (2005)
• 5. Y. Oreg, K. Byczuk, B.I. Halperin, Phys. Rev. Lett. 85, 365 (2000)
• 6. H. Schoeller, G. Schön, Phys. Rev. B 50, 18436 (1994); J. König, J. Schmid, H. Schoeller, G. Schön, Phys. Rev. B 54, 16820 (1996)
• 7. A. Thielmann, M.H. Hettler, J. König, G. Schön, Phys. Rev. Lett. 95, 146806 (2005)
• 8. I. Weymann, J. Barnaś, S. Krompiewski, Phys. Rev. B 76, 155408 (2007)
• 9. I. Weymann, J. Barnaś, S. Krompiewski, cond-mat/0803.1969
• 10. E. Onac, F. Balestro, B. Trauzettel, C.F.J. Lodewijk, L.P. Kouwenhoven, Phys. Rev. Lett. 96, 026803 (2006)
• 11. I. Weymann, J. Barnaś, Appl. Phys. Lett. 92, 103127 (2008)
• 12. Ch.A. Merchant, N. Markovic, Phys. Rev. Lett. 100, 156601 (2008)

Identifiers

DOI

10.12693/APhysPolA.115.296