1 / 1

IBM Optimizes Material Capabilities at ALS

IBM Optimizes Material Capabilities at ALS. Scientific Achievement IBM researchers used the ALS to understand the link between electron conduction and lattice distortions in spintronics materials. Significance and Impact

Download Presentation

IBM Optimizes Material Capabilities at ALS

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. IBM Optimizes Material Capabilities at ALS • Scientific Achievement • IBM researchers used the ALS to understand the link between electron conduction and lattice distortions in spintronics materials. • Significance and Impact • The ability to control electron conduction can form the basis for an ultrafast electronic switch in the future; devices could be activated so quickly that very little energy would be lost through dissipation. • Research Details • Vanadium dioxide is one of the few known materials that acts like an insulator at low temperatures but like a metal at warmer temperatures. • By varying the thickness of an underlying buffer layer, researchers were able to change the strain in a vanadium dioxide film and thereby vary the transition temperature between conducting and insulating phases. • Researchers found that the material's ordering temperature is determined by the orbital occupancy in the high-temperature metallic phase rather than that of the insulating phase. • Work was performed at Lawrence Berkeley National Laboratory, ALS Beamline 4.0.2. The operation of the ALS is supported by the U.S. Department of Energy, Office of Basic Energy Sciences. A schematic of the crystal structures in vanadium dioxide (VO2), showing the motion of the vanadium (black arrows) with respect to the oxygen ions across the metal-insulator transition. VO2 acts like an insulator at low temperatures but like a metal at near room temperature. Read the full article: www-als.lbl.gov/index.php/science-highlights/industry-als/888

More Related