Evidence of quantum phase slip effect in titanium nanowires
Abstract
Electron transport properties of titanium nanowires were experimentally studied. Below the effective diameter 50 nm all samples demonstrated a pronounced broadening of the R(T) dependencies, which cannot be accounted for thermal flcutuations. An extensive microscopic and elemental analysis indicates the absence of structural or/and geometrical imperfection capable to broaden the the R(T) transition to such an extent. We associate the effect with quantum flucutuations of the order parameter.
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