Cancellation of the effect of the electron spin degeneracy on the electrical conductance of a multi-atom metallic nanoconstriction
Source abstract
Abstract
We present a semi-phenomenological theory based on the cancellation of the effect of the electron spin degeneracy on the quantized electrical conductance through a multi-atom metallic nanoconstriction. In this context, mathematical expressions for the conductance and density of off-resonant conduction electron states are derived. Our results are in excellent agreement with experimental observations. In addition, a relationship for the quantized electron velocity is obtained from our theory, this result being compared with the Fermi velocity involved in a quantum-box approach.
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Research context
OpenAlex topics: Molecular Junctions and Nanostructures · Quantum and electron transport phenomena · Quantum-Dot Cellular Automata
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References (25)
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1. M. Apostol, Phys. Lett. A 372, 5093–5095 (2008)10.1016/j.physleta.2008.05.061 ↗
2. M.A. Grado-Caffaro, M. Grado-Caffaro, Phys. Lett. A 372, 3573–3576 (2008)10.1016/j.physleta.2008.02.039 ↗
3. M.A. Grado-Caffaro, M. Grado-Caffaro, Physica B 404, 1621–1623 (2009)10.1016/j.physb.2009.01.035 ↗
4. M.A. Grado-Caffaro, M. Grado-Caffaro, J. Appl. Phys. 105, 034301 (2009)
5. C.E.D. Chidsey, Science 251, 919–922 (1991)10.1126/science.251.4996.919 ↗
6. D.P.E. Smith, Science 269, 371 (1995)10.1126/science.269.5222.371 ↗
7. W.A. de Heer, S. Frank, D. Ugarte, Z. Phys. B 104, 468 (1997)10.1007/s002570050477 ↗
8. V. Ermakov, S. Kruchinin, A. Fujiwara, in Electron Transport in Nanosystems, ed. by J. Bonca, S. Kruchinin. Proc. NATO ARW (Springer, Berlin, 2008), pp. 341–349
9. A.J. Bard, L.R. Faulkner, Electrochemical Methods, Fundamentals and Applications (Wiley, New York, 1980)
10. N.J. Tao, C.Z. Li, H.X. He, J. Electroanal. Chem. 492, 81–93 (2000)10.1016/S0022-0728(00)00295-3 ↗
11. C. Shu, C.Z. Li, H.X. He, A. Bogozi, J.S. Bunch, N.J. Tao, Phys. Rev. Lett. 84, 5196–5199 (2000)10.1103/PhysRevLett.84.5196 ↗
12. A. Yazdani, D.M. Eigler, N.D. Lang, Science 272, 1921–1924 (1996)10.1126/science.272.5270.1921 ↗
13. M.A. Grado-Caffaro, M. Grado-Caffaro, Optik 115, 476–477 (2004)10.1078/0030-4026-00401 ↗
14. M.F. Lin, K.W.-K. Shung, Phys. Rev. B 51, 7592 (1995)10.1103/PhysRevB.51.7592 ↗
15. S. Frank, P. Poncharal, Z.L. Wang, W.A. de Heer, Science 280, 1744–1746 (1998)10.1126/science.280.5370.1744 ↗
16. S. Datta, Electronic Transport Properties of Mesoscopic Systems (Cambridge University Press, Cambridge, 1995)10.1017/CBO9780511805776 ↗
17. J.G. Kushmerick, S.K. Pollack, J.C. Yang, J. Naciri, D.B. Holt, M.A. Ratner, R. Shashidhar, in Molecular Electronics III, ed. by J.R. Reimers, C.A. Picconatto, J.C. Ellenbogen, R. Shashidhar. Ann. New York Acad. Sci., vol. 1006 (2003), pp. 277–290
18. J. Tersoff, D.R. Hamann, Phys. Rev. B 31, 805–813 (1985)10.1103/PhysRevB.31.805 ↗
19. C.J. Chen, Introduction to STM (Oxford University Press, New York, 1993)
20. C.L. Kane, E.J. Mele, Phys. Rev. B 59, R12759–R12762 (1999)10.1103/PhysRevB.59.R12759 ↗
21. H. Reiss, A. Heller, J. Phys. Chem. 89, 4207 (1985)10.1021/j100266a013 ↗
22. M.F. Crommie, C.P. Lutz, D.M. Eigler, Nature 363, 524–527 (1993)10.1038/363524a0 ↗
23. V. Ermakov, S. Kruchinin, H. Hori, A. Fujiwara, Int. J. Mod. Phys. B 21, 1827–1835 (2007)10.1142/S0217979207037053 ↗
24. A. Soldatov, N. Bogolyubov Jr., S. Kruchinin, Condens. Matter Phys. 9, 1–9 (2006)10.5488/CMP.9.1.151 ↗
25. S. Sahoo, C.-S. Yang, B. Doudin, Phys. Lett. A 352, 331–334 (2006)10.1016/j.physleta.2005.12.006 ↗