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Theoretical description of electron-phonon Fock space for gapless and gapped nanowires |
| Ashrafalsadat Shariati1,2, Hassan Rabani1,2, Mohammad Mardaani1,2 |
1 Department of Physics, Faculty of Science, Shahrekord University, P. O. Box 115, Shahrekord, Iran;
2 Nanotechnology Research Center, Shahrekord University, 8818634141, Shahrekord, Iran |
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Abstract We study the effect of electron-phonon (e-ph) interaction on the elastic and inelastic electronic transport of a nanowire connected to two simple rigid leads within the tight-binding and harmonic approximations. The model is constructed using Green's function and multi-channel techniques, taking into account the local and nonlocal e-ph interactions. Then, we examine the model for the gapless (simple chain) and gapped (PA-like nanowire) systems. The results show that the tunneling conductance is improved by the e-ph interaction in both local and nonlocal regimes, while for the resonance conductance, the coherent part mainly decreases and the incoherent part increases. At the corresponding energies which depend on the phonon frequency, two dips in the elastic and two peaks in the inelastic conductance spectra appear. The reason is the absorption of the phonon by the electron in transition into inelastic channels.
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Received: 05 November 2016
Revised: 11 December 2016
Accepted manuscript online:
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PACS:
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63.20.kd
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(Phonon-electron interactions)
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72.10.-d
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(Theory of electronic transport; scattering mechanisms)
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73.23.-b
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(Electronic transport in mesoscopic systems)
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78.67.Uh
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(Nanowires)
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| Fund: Project supported by the Iranian Nanotechnology Initiative. This work has also been supported by Shahrekord University through a research fund. |
Corresponding Authors:
Hassan Rabani
E-mail: rabani-h@sci.sku.ac.ir
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Cite this article:
Ashrafalsadat Shariati, Hassan Rabani, Mohammad Mardaani Theoretical description of electron-phonon Fock space for gapless and gapped nanowires 2017 Chin. Phys. B 26 036302
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| [1] |
Ju Y S 2005 Appl. Phys. Lett. 87 153106
|
| [2] |
Galperin M, Ratner M A and Nitzan A 2007 J. Phys.:Condens. Matter 19 103201
|
| [3] |
Ferry D K and Goodnick S M 1999 Transport in Nanostructures (Cambridge:Cambridge University Press)
|
| [4] |
Hochbaum A I, Chen R, Delgado R D, Liang W, Garnett E C, Najarian M, Majumdar A and Yang P 2008 Nature 451 163
|
| [5] |
Giazotto F, Heikkil T T, Luukanen A, Savin A M and Pekola J P 2006 Rev. Mod. Phys. 78 217
|
| [6] |
Altomare F and Chang A M One-Dimensional Superconductivity in Nanowires 2013 (New York:John Wiley & Sons)
|
| [7] |
Verstraete M J and Gonze X 2006 Phys. Rev. B 74 153408
|
| [8] |
Kittel C Introduction to Solid State Physics 2007 (Wiley India Pvt. Limited)
|
| [9] |
Grosso G and Parravicini G P 2013 Solid State Physics (2th Edn.) (New York:Academic Press)
|
| [10] |
Kushmerick J G, Lazorcik J, Patterson C H and Shashidhar R 2004 Nano Lett. 4 639
|
| [11] |
Mardaani M, Rabani H, Esmaili E and Shariati A 2015 J. App. Phys. 118 054306
|
| [12] |
Mardaani M and Rabani H 2014 Phys. Status Solidi B 251 1001
|
| [13] |
De Z, Guang K and Jun L 2015 Chin. Phys. B 24 17301
|
| [14] |
Burkle M, Viljas J K, Hellmuth T J, Scheer E, Weigend F, Schon G and Pauly F 2013 Phys. Status Solidi B 250 2468
|
| [15] |
Zhang W, Delerue C, Niquet Y M, Allan G and Wang E 2010 Phys. Rev. B 82 115319
|
| [16] |
Datta S Quantom Transport:Atom to Transistor 2005 (Cambridge:Cambridge University Press)
|
| [17] |
Baroni S, de Gironcoli S, Corso A D and Giannozzi P 2001 Rev. Mod. Phys. 73 515
|
| [18] |
Torres L F, Pastawski H M and Makler S S 2001 Phys. Rev. B 64 193304
|
| [19] |
Nozaki D, da Rocha C G, Pastawski H M and Cuniberti G 2012 Phys. Rev. B 85 155327
|
| [20] |
Holstein T 1959 Ann. Phys. 8 343
|
| [21] |
Peierls R E 1955 Quantum Theory of Solids (Oxford:Clarendon Press)
|
| [22] |
Coropceanu V, Cornil J, da Silva D A, Olivier Y, Silbey R and Bredas J L 2007 Chem. Rev. 107 926
|
| [23] |
Troisi A and Orlandi G 2006 Phys. Rev. Lett. 96 086601
|
| [24] |
Walczak K 2007 Physica B 392 173
|
| [25] |
Pastawski H M, Torres L E F F and Medina E 2002 Chem. Phys. 281 257
|
| [26] |
Mardaani M and Rabani H 2014 J. Mag. Mag. Mater. 331 28
|
| [27] |
Vdovin E E, Mishchenko A, Greenaway M T, Zhu M J, Ghazaryan D, Misra A, Cao Y, Morozov S V, Makarovsky O, Fromhold T M, Patané A, Slotman G J, Katsnelson M I, Geim A K, Novoselov K S and Eaves L 2016 Phys. Rev. Lett. 116 186603
|
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