1 / 21

Temperature dependent memory of electron glasses

Temperature dependent memory of electron glasses. -. -. -. -. -. Aviad Frydman Bar I lan University. -. BIU Ariel Eisenbach Tal Havdala CNRS Grenoble Julien Delahaye Thierry Grenet Harvard Ariel Amir. Peculiarity # 1. 150k. 77k. Discontinuous Au. Peculiarity # 2.

noreen
Download Presentation

Temperature dependent memory of electron glasses

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Temperature dependent memory of electron glasses - - - - - AviadFrydman Bar Ilan University - BIU Ariel Eisenbach Tal Havdala CNRS Grenoble JulienDelahaye Thierry Grenet Harvard Ariel Amir

  2. Peculiarity # 1 150k 77k Discontinuous Au

  3. Peculiarity # 2 Discontinuous Au

  4. Electron glasses InO, In2O3-x Granular Al Granular Au Ultrathin Pb Ultarthin Bi Be films NbSi Tl2O3−x Discontinuous Ni, Au, Ag, Al

  5. Temperature dependence Spin glass Structural glasses

  6. Temperature independence in EG a-InO Granular Al 5K vrs 8K

  7. Discontinuous films

  8. Determining  Ni, T=12K ~1000s Vg2 Vg1

  9. Temperature dependence – discontinuous films Ni

  10. Temperature dependence – discontinuous films =f(T*/T) Au Au Au T*=12K T*=100K T*=300K

  11. High T Low T Vg1 Vg2

  12. Effect of cooling 240k 200K 160k 120k 80k ~600s Vg

  13. Selective memory Non-commutativity Changing Vg + Cooling ≠ Cooling + Changing Vg

  14. Aging rejuvenation in spin glasses E. Vincent, J_P Bouchaud et-al Aging acceleration

  15. Cooling rate

  16. L50nm L20nm L200nm Granular Al L5nm

  17. Summary Continuous films exhibit temperature dependent dynamics Crossover from thermal activation to temperature independence Dynamics depend on T and on T* Cooling the sample significantly ages the sample Sample maintains memory of processes that took place at higher temperatures

More Related