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Charge avalanches a...
Charge avalanches and depinning in the Coulomb glass : The role of long-range interactions
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- Andresen, Juan Carlos (author)
- KTH,Kondenserade materiens teori,Theoretische Physik, ETH Zurich, Zurich, Switzerland
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Pramudya, Yohanes (author)
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Katzgraber, Helmut G. (author)
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Thomas, Creighton K. (author)
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Zimanyi, Gergely T. (author)
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Dobrosavljevic, V. (author)
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(creator_code:org_t)
- American Physical Society, 2016
- 2016
- English.
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In: Physical Review B. - : American Physical Society. - 2469-9950. ; 93:9
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- Self-Organized Criticality
- Electron Glass
- Hysteresis
- Disorder
- Systems
- Conductivity
- Relaxation
- Dynamics
- Noise
- Model
Publication and Content Type
- ref (subject category)
- art (subject category)
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