Europhys. Lett.
Volume 73, Number 5, March 2006
Page(s) 765 - 771
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 18 January 2006
Europhys. Lett., 73 (5), pp. 765-771 (2006)
DOI: 10.1209/epl/i2005-10448-8

Electrical transport in deformed nanostrips: Electrical signature of reversible mechanical failure

S. Datta, D. Chaudhuri, T. Saha-Dasgupta and S. Sengupta

S. N. Bose National Centre for Basic Sciences - Block JD, Sector III, Salt Lake Kolkata 700 098, India

received 18 November 2005; accepted in final form 5 January 2006
published online 18 January 2006

We calculate the electrical conductivity of a thin crystalline strip of atoms confined within a quasi-one-dimensional channel of fixed width. The conductivity shows anomalous behavior as the strip is deformed under tensile loading. Beyond a critical strain, the solid fails by the nucleation of alternating bands of solid and smectic-like phases accompanied by a jump in the conductivity. Since the failure of the strip in this system is known to be reversible, the conductivity anomaly may have practical use as a sensitive strain transducer.

73.40.-c - Electronic transport in interface structures.
73.22.-f - Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals.
62.25.+g - Mechanical properties of nanoscale materials.

© EDP Sciences 2006