English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Dielectric breakdown of Mott insulators – doublon production and doublon heating

Eckstein, M., & Werner, P. (2013). Dielectric breakdown of Mott insulators – doublon production and doublon heating. Journal of Physics: Conference Series, 427(1): 012005. doi:10.1088/1742-6596/427/1/012005.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1646-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-30C1-8
Genre: Conference Paper

Files

show Files

Locators

show
hide
Description:
-
Locator:
http://arxiv.org/abs/1211.2698 (Preprint)
Description:
-

Creators

show
hide
 Creators:
Eckstein, Martin1, 2, Author              
Werner, Philipp3, Author
Affiliations:
1Theory of Correlated Systems out of Equilibrium, Research Groups, Max Planck Research Department for Structural Dynamics, Department of Physics, University of Hamburg, External Organizations, ou_2173641              
2CFEL, Hamburg, Germany , ou_persistent22              
3Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland , ou_persistent22              

Content

show
hide
Free keywords: Condensed matter: electrical, magnetic and optical; PACS numbers: 77.22.Jp Dielectric breakdown and space-charge effects; 71.10.Fd Lattice fermion models (Hubbard model, etc.)
 Abstract: Using dynamical mean-field theory and the non-crossing approximation as impurity solver, we study the response of a Mott insulator to strong dc electric fields. The breakdown of the Mott insulating state is triggered by field-induced creation of doublon-hole pairs. In a previous investigation, Ref. [1], it was found that the system approaches a long-lived quasi-steady state in which the current is time-independent although the number of carriers constantly increases. Here we investigate and clarify the nature of this state, which exists only because thermalization is slow in the Hubbard model at strong coupling. The current is time-independent because doublons and holes have an infinite temperature distribution. Evidence for this fact is obtained from spectral functions and by comparing the electric current with the field-induced doublon-hole creation rate. Implications to real experiments, in systems with energy dissipation, are discussed.

Details

show
hide
Language(s): eng - English
 Dates: 2013-03-27
 Publication Status: Published online
 Pages: 14
 Publishing info: -
 Table of Contents: -
 Rev. Method: Internal
 Identifiers: DOI: 10.1088/1742-6596/427/1/012005
arXiv: 1211.2698
 Degree: -

Event

show
hide
Title: Progress in Nonequilibrium Green's Functions V (PNGF V)
Place of Event: Jyväskylä, Finland
Start-/End Date: 2012-08-27 - 2012-08-31

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Physics: Conference Series
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 427 (1) Sequence Number: 012005 Start / End Page: - Identifier: ISSN: 1742-6588
CoNE: https://pure.mpg.de/cone/journals/resource/111097776606042