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Zero-bias transport anomaly in metallic nanobridges: Magnetic field dependence and universal conductance fluctuations | | H. B. Weber
; R. Häussler
; H. v. Löhneysen
; J. Kroha
; | | Date: |
21 Jul 2000 | | Journal: | in "Kondo Effect and dephasing in low-dimensional metallic systems", NATO Science Series II, vol. 50, 53 (Kluwer Academic Publishers, 2001). | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Disordered Systems and Neural Networks | cond-mat.mes-hall cond-mat.dis-nn | | Affiliation: | 1,2), and J. Kroha ( Forschungszentrum Karlsruhe, INT; Physikalisches Institut, Universität Karlsruhe; Institut TKM, Universität Karlsruhe, Germany | | Abstract: | We present data of transport measurements through a metallic nanobridge exhibiting diffusive electron transport. A logarithmic temperature dependence and a zero-bias anomaly in the differential conductance are observed, independent of magnetic field. The data can be described by a single scaling law. The theory of electron-electron interaction in disordered systems, adapted to the case of finite-size systems in non-equilibrium, yields quantitative agreement with experiment. Measurements of universal conductance functuations support the assumptions of the theory about the electronic phase coherence. | | Source: | arXiv, cond-mat/0007333 | | Services: | Forum | Review | PDF | Favorites | |
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