Abstract
To investigate the nature of the metal-insulator transition which takes place in at , we study pure samples of irradiated by fast electrons, which introduce point defects. Our results show that the metal-insulator transition is gradually weakened and shifted to lower temperatures by introducing the defects, in close analogy to systems where metal-insulator transition is due to a Peierls mechanism. Additionally, we study the influence of point defects on the temperature-pressure phase diagram of .
- Received 15 January 2008
- Accepted 5 March 2008
DOI:https://doi.org/10.1103/PhysRevB.77.115142
©2008 American Physical Society