Angular Dependence of Universal Conductance Fluctuations in Noble-Metal Nanowires

E. Scheer, H. v. Löhneysen, A. D. Mirlin, P. Wölfle, and H. Hein
Phys. Rev. Lett. 78, 3362 – Published 28 April 1997
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Abstract

We investigate fluctuations in the magnetoconductance (measured at T50 mK) of noble-metal nanowires in a mesoscopic two-lead configuration, with lengths 500 and 1000 nm and widths w between 45 and 360 nm. We determine the dependence of the correlation field Bc on the angle θ between the direction of the magnetic field and the long axis of the wires. θ is changed at low T continuously from 90° (usual geometry) to 0°. We present a calculation taking into account the 3D diffusive motion of the conduction electrons describing the angular dependence of Bc. We compare this Bc(θ) dependence with conductance fluctuations observed while sweeping θ at constant magnetic field.

  • Received 17 October 1996

DOI:https://doi.org/10.1103/PhysRevLett.78.3362

©1997 American Physical Society

Authors & Affiliations

E. Scheer1, H. v. Löhneysen1, A. D. Mirlin2, P. Wölfle2, and H. Hein3

  • 1Physikalisches Institut, Universität Karlsruhe, D-76128 Karlsruhe, Germany
  • 2Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
  • 3Forschungszentrum Karlsruhe, Institut für Mikrostrukturtechnik, D-76021 Karlsruhe, Germany

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Vol. 78, Iss. 17 — 28 April 1997

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