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TT: Fachverband Tiefe Temperaturen

TT 57: Transport: Molecular Electronics I

TT 57.10: Vortrag

Mittwoch, 2. April 2014, 12:15–12:30, HSZ 304

Structure and conductance analysis of atomic-sized contacts — •Manuel Matt¹, Fabian Pauly¹, Juan Carlos Cuevas², and Peter Nielaba¹ — ¹University of Konstanz, Department of Physics, 78457 Konstanz, Germany — ²Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain

We study the conductance histograms of different metals such as Au and Al. Our theoretical approach combines molecular dynamics simulations of the stretching of atomic-sized wires with the non-equilibrium Green’s function formalism based on the tight-binding modelling of the electronic system. As compared to pervious work [1], we consider substantially larger wires and explore different lattice orientations. In combination with experiments we recently provided evidence that one can build a fatigue-resistant two-terminal switch with the reversible rearrangement of single atoms[2].
M. Dreher, F. Pauly, J. Heurich, J. C. Cuevas, E. Scheer, and P. Nielaba, Phys. Rev. B 72, 075435 (2005)
C. Schirm, M. Matt, F. Pauly, J. C. Cuevas, P. Nielaba and E. Scheer, Nature Nanotechnology 8, 645 (2013)