Electron-transport properties of Na nanowires under applied bias voltages

Physical Review B - Condensed Matter and Materials Physics

Volumn 66, Issue 16, 2002, Pages 1614021-1614024

  Tsukamoto, Shigeru ^a   Hirose, Kikuji ^a  

^a OSAKA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

SODIUM;

ARTICLE; CALCULATION; DEVICE; ELECTRIC CURRENT; ELECTRIC POTENTIAL; ELECTRON TRANSPORT; ELECTRONICS; NANOTECHNOLOGY; NANOWIRE;

EID: 0037110169     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (26)

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22. We attempted another geometrical optimization for all of the atoms in the nanowire part using the model that each jellium electrode is replaced with a Na crystal consisting of 20 atoms. During optimization the atoms of the electrodes and bases are kept frozen. The resultant geometry of the nanowire is almost the same as that in the case described in the text.
23. N.D. Lang and Ph. Avouris reported a similar oscillatory behavior and its interpretation for carbon nanowires in Phys. Rev. Lett. 81, 3515 (1998).
24. The spacial distribution of the LDOS relevant to the peak A (B) shows an eigenmode pattern with a loop (node) at the center of the nanowire. Because of this distinct difference, the peak B is not regarded as a peak A that has been shifted to the higher energy side.
25. It is noted that the LDOS around the left-end atom of the nanowire (atom 1) and the shift of this LDOS upon applying bias voltage are almost the same as those for the left basis in Fig. 4. The sameness of the LDOS shifts is understood from Fig. 5(a) which indicates that the potential rise at atom 1 is equal to that at the left basis.
26. S. Tsukamoto, M. Aono, and K. Hirose, Jpn. J. Appl. Phys. (to be published).