Nanowires: Size evolution, reversibility, and one-atom contacts

Zeitschrift fur Physik D-Atoms Molecules and Clusters

Volumn 40, Issue 1, 1997, Pages 282-287

  Landman, Uzi ^a   Barnett, R N ^a   Luedtke, W D ^a  

^a GEORGIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 12944256860     PISSN: 01787683     EISSN: None     Source Type: Journal    
DOI: 10.1007/s004600050210     Document Type: Article

References (42)

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29. The calculation of the conductance uses a modified Sharvin expression which is based on Weyl's theorem (see e.g. Morse, P.M., Feshbach, H.: Methods of Theoretical Physics (McGraw-Hill, New York, 1953, p. 761), relating the number of transverse states (channels) in the narrowest part of the junction to the corss-sectional area and the circumference of the narrowing. These quantities were estimated from the geometries of atomic wire configurations obtained during the simulation. Due to strong screening in metals the effective potential confining the electrons in the wire is short-ranged (as also found in recent local density functional calculations of metallic wires by R.N. Barnett and U. Landman, ref. 8) approximating well a hard-wall boundary potential, corresponding to the Dirichlet boundary condition used in derivation of the Weyl theorem
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33. Apparent pressures in the range of 3 to 6 GPa measured for Au nanowires at 300 K, in agreement with our earlier [4] and current predictions, have been reported most recently, see Rubio, G., Agrait, N., Vieira, S.: Phys. Rev. Lett. 76, 2302 (1996)
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