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First Principles Calculation of Universal Conductance Fluctuation in Monatomic Metal Chains |
| CHEN Jing-Zhe;ZHANG Jin;HAN Ru-Shan |
| School of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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CHEN Jing-Zhe, ZHANG Jin, HAN Ru-Shan 2008 Chin. Phys. Lett. 25 1060-1063 |
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Abstract Combining the non-equilibrium Green's function method and density functional theory, we provide a first-principle scheme to calculate the universal conductance fluctuation (UCF) in quasi one-dimensional monatomic chains subject to a magnetic field. Our results show that for these monatomic chains, the amplitude of the UCF is much smaller than the previous theoretical prediction for mesoscopic conductors by Lee et al. [Phys. Rev. Lett. 55 (1985) 1622; Phys. Rev. B 35 (1987) 1039] The reason is that the ergodic hypothesis fails in these nanowires due to the confinement of geometry. We ascribe the phenomenon to the flux-dependent density of states fluctuation.
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| Keywords:
71.15.-m
31.15.-p
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Received: 07 October 2007
Published: 27 February 2008
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| PACS: |
71.15.-m
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(Methods of electronic structure calculations)
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31.15.-p
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(Calculations and mathematical techniques in atomic and molecular physics)
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[1] Fedrov G 2005 Phys. Rev. Lett. 94 66801
[2] Tserkovnyak Y and Halperin B I 2006 Phys. Rev. B 74 245327
[3] Vila L, Giraud R, Thevenard L, Lema\^\i tre A, Pierre Fet al 2007 Phys. Rev. Lett. 98 027204
[4] Kong J, Yenilmez E, Tombler T W, Kim W, Dai H J et al 2001 Phys. Rev. Lett. 87 106801
[5] Liang W J, Bockrath M, Bozovic D, Hafner J H et al 2001 Nature 411 665
[6] Langer L, Bayot L, Grivei E et al 1996 Phys. Rev. Lett. 76 479
[7] Man H T and Morpurgo A F 2005 Phys. Rev. Lett. 95 026801
[8] Hod O, Rabani E and Bare R 2006 Accounts Chem. Res. 39 109
[9] Stone A D 1985 Phys. Rev. Lett. 54 2692
[10] Lee P A and Stone A D 1985 Phys. Rev. Lett. 55 1622
[11] Webb R A, Washburn S and Umbach C P 1988 Phys. Rev. B 37 8455
[12] Lee P A, Stone A D and Fukuyama H 1987 Phys. Rev. B 35 1039
[13] Taylor J, Guo H and W J 2001 Phys. Rev. B 63 245407
[14] Xue Y Q, Datta S and Ratner M A 2002 Chem. Phys. 281 151
[15] London F 1937 J. Phys. Radium 8 397
[16] Ditchfield R 1974 Mol. Phys. 27 789
[17] Pople J A 1962 J. Chem. Phys. 37 53
[18] Chen J Z, Zhang J et al 2007 Chin. Phys. (accepted)
[19] Agr\"a it N, Yeyatib A L and Ruitenbeeck J M V 2003 Phys. Rep. 377 81
[20] Kozub V I, Caro J and Holweg P A M 1994 Phys. Rev. B 50 15126
[21] Roche S and Saito R 2001 Phys. Rev. Lett. 87 246803
[22] Reed M A, Zhou C, Muller C J, Burgin T P and Tour J M 1997 Science 278 252
[23] Ventra M D, Pantelides S T and Lang N D 2000 Phys. Rev.Lett. 84 979
[24] Emberly E G and Kirczenow G 1998 Phys. Rev. B 58 10911
[25] Zhang J X, Hou S M, Li R, Qian Z K et al 2005 Nanotechnology 16 3057
[26] Hou S M, Li R , Qian Z K, Zhang J X et al 2005 J. Phys.Chem. A 109 8356 |
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