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9 - Open issues

Published online by Cambridge University Press:  05 January 2013

M. Pollak
Affiliation:
University of California, Riverside
M. Ortuño
Affiliation:
Universidad de Murcia, Spain
A. Frydman
Affiliation:
Bar-Ilan University, Israel
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Summary

The previous chapters described the unusual electronic phenomena brought about by disorder and interaction and how they can be understood at least qualitatively. To conclude this book, a number of open questions and possible future research directions are addressed. These demonstrate that the field of electron glass is far from being closed and that some of its major issues are not understood or are under debate. First and foremost, there exists no statistical or thermodynamic theory of nonergodic systems, and for that reason there is no full understanding of any glasses – less so of quantum glasses such as is the electron glass. Indeed, the purpose of this book is to present a comprehensive review of the current state of the field, with the anticipation that further experimental, theoretical, and numerical work will follow and help elucidating the issues that remain unclear today.

Processes responsible for glassy properties At the present, there is no consensus as to the electronic processes that lead to long relaxation and memory phenomena. Does the glassy behavior require many-electron transitions or are single hops enough? Is it only very low energy transitions that linger at very long times? The proposed suggestions for the slow relaxation of conductivity are slow formation of the Coulomb gap, slow formation of quasi-particles, slow manyelectron transitions off the percolation path affecting the paths, many-electron transitions traversing the current carrying path, exchange of particles between the percolation path and clusters off the path, all as discussed in Chapter 7.

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The Electron Glass , pp. 264 - 268
Publisher: Cambridge University Press
Print publication year: 2012

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  • Open issues
  • M. Pollak, University of California, Riverside, M. Ortuño, Universidad de Murcia, Spain, A. Frydman, Bar-Ilan University, Israel
  • Book: The Electron Glass
  • Online publication: 05 January 2013
  • Chapter DOI: https://doi.org/10.1017/CBO9780511978999.009
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  • Open issues
  • M. Pollak, University of California, Riverside, M. Ortuño, Universidad de Murcia, Spain, A. Frydman, Bar-Ilan University, Israel
  • Book: The Electron Glass
  • Online publication: 05 January 2013
  • Chapter DOI: https://doi.org/10.1017/CBO9780511978999.009
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Open issues
  • M. Pollak, University of California, Riverside, M. Ortuño, Universidad de Murcia, Spain, A. Frydman, Bar-Ilan University, Israel
  • Book: The Electron Glass
  • Online publication: 05 January 2013
  • Chapter DOI: https://doi.org/10.1017/CBO9780511978999.009
Available formats
×