Universal conductance fluctuations in Cu:Mn nanocontacts

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2000
Authors
Löhneysen, Hilbert von
Paschke, Christian
Weber, Heiko B.
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Physica / B [Condensed Matter] ; 284-288 (2000), Part 2. - pp. 1858-1859
Abstract
Universal conductance fluctuations in Cu:Mn nano-contacts of different Mn concentrations c yield the phase coherence length L_f which exhibits a minimum at c 100 ppm. Above this concentration which marks the onset of a spin-glass state below 0.2 K, L_f depends on the magnetic field range, rising to nearly the c=0 value for B in [9.5, 12.5 T] and leveling-off at a much lower value for B in [0, 3 T]. These results demonstrate the recovery of phase coherence due to spin-glass correlations and a strong magnetic field.
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530 Physics
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Mesoscopics,Phase coherent transport,Spin-glasses,Spin scattering
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ISO 690LÖHNEYSEN, Hilbert von, Christian PASCHKE, Heiko B. WEBER, Elke SCHEER, 2000. Universal conductance fluctuations in Cu:Mn nanocontacts. In: Physica / B [Condensed Matter]. 284-288(Part 2), pp. 1858-1859. Available under: doi: 10.1016/S0921-4526(99)02874-4
BibTex
@article{Lohneysen2000Unive-9144,
  year={2000},
  doi={10.1016/S0921-4526(99)02874-4},
  title={Universal conductance fluctuations in Cu:Mn nanocontacts},
  number={Part 2},
  volume={284-288},
  journal={Physica / B [Condensed Matter]},
  pages={1858--1859},
  author={Löhneysen, Hilbert von and Paschke, Christian and Weber, Heiko B. and Scheer, Elke}
}
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