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Title

Variable-Range Hopping and Quantum Creep in One Dimension

Authors
Nattermann, Thomas
Le Doussal, Pierre
Published in Physical Review Letters. 2003, vol. 91, no. 5
Abstract We study the quantum nonlinear response to an applied electric field E of a one-dimensional pinned charge-density wave or Luttinger liquid in the presence of disorder. From an explicit construction of low-lying metastable states and of bounce instanton solutions between them, we demonstrate quantum creep v=e−c/E1/2 as well as a sharp crossover at E=E∗ towards a linear response form consistent with variable-range hopping arguments, but dependent only on electronic degrees of freedom.
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NATTERMANN, Thomas, GIAMARCHI, Thierry, LE DOUSSAL, Pierre. Variable-Range Hopping and Quantum Creep in One Dimension. In: Physical Review Letters, 2003, vol. 91, n° 5. https://archive-ouverte.unige.ch/unige:36147

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Deposited on : 2014-04-29

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