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Charge avalanches and depinning in the Coulomb glass

Title: Charge avalanches and depinning in the Coulomb glass: The role of long-range interactions.
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Name(s): Andresen, Juan Carlos, author
Pramudya, Yohanes, author
Katzgraber, Helmut G., author
Thomas, Creighton K., author
Zimanyi, Gergely T., author
Dobrosavljevic, V., author
Type of Resource: text
Genre: Text
Date Issued: 2016-03-24
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: We explore the stability of far-from-equilibrium metastable states of a three-dimensional Coulomb glass at zero temperature by studying charge avalanches triggered by a slowly varying external electric field. Surprisingly, we identify a sharply defined dynamical ("depinning") phase transition from stationary to nonstationary charge displacement at a critical value of the external electric field. Using particle-conserving dynamics, scale-free system-spanning avalanches are observed only at the critical field. We show that the qualitative features of this depinning transition are completely different for an equivalent short-range model, highlighting the key importance of long-range interactions for nonequilibrium dynamics of Coulomb glasses.
Identifier: FSU_libsubv1_wos_000372712000002 (IID), 10.1103/PhysRevB.93.094429 (DOI)
Keywords: Conductivity, disorder, Dynamics, Electron glass, hysteresis, model, noise, relaxation, self-organized criticality, systems
Publication Note: The publisher’s version of record is available at http://www.dx.doi.org/10.1103/PhysRevB.93.094429
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000372712000002
Owner Institution: FSU
Is Part Of: Physical Review B.
2469-9950
Issue: iss. 9, vol. 93

Choose the citation style.
Andresen, J. C., Pramudya, Y., Katzgraber, H. G., Thomas, C. K., Zimanyi, G. T., & Dobrosavljevic, V. (2016). Charge avalanches and depinning in the Coulomb glass: The role of long-range interactions. Physical Review B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000372712000002