Artificially Altered Material Could Accelerate Neuromorphic Device Development

Using quantum Monte Carlo methods, the researchers simulated bulk VO2. Yellow and turquoise represent changes in electron density between the excited and ground states of a compound composed of oxygen, in red, and vanadium, in blue, which allowed them to evaluate how an oxygen vacancy, in white, can alter the compound’s properties.

Science

Artificially Altered Material Could Accelerate Neuromorphic Device Development

Neuromorphic devices — which emulate the decision-making processes of the human brain — show great promise for solving pressing scientific problems, but building physical systems to realize this potential presents researchers with a significant challenge. An international team has gained additional insights into a material compound called vanadium oxide, or…

Elizabeth RosenthalJanuary 25, 2022

People

OLCF Staff Member Shares Work on Improving Simulation Efficiency

In addition to the opportunity to present her own findings, Li emphasizes that conferences such as PASC and CCP are a valuable opportunity to meet peers and take a big-picture look at the state of the fieldPhoto courtesy of the Swiss National Supercomputing Centre Ying Wai Li’s research has provided…

Josh CunninghamAugust 9, 2017

People

OLCF Staff, Users Make Strong Showing at APS

ORNL and OLCF were well represented with several speakers discussing their work on Titan at the March Meeting of the American Physical Society.

Christie ThiessenMay 5, 2015

Science

Researchers Get Warmer in Understanding High-Temperature Superconductors

A group at the Oak Ridge National Laboratory wanted to better understand the complex interactions that enable superconductivity and needed one of the world’s fastest supercomputers to help them.

Eric GedenkMarch 10, 2015

Science

Researchers Call on Titan to Help Solve the Shaky Future of Rare Earth Magnets

Bruce Harmon of Ames National Laboratory’s Division of Materials Science and Engineering is a project leader using Titan to create computational methods for exploring material structure and composition in non–rare earth permanent magnets.

Katie Elyce JonesDecember 10, 2014

Science

Iron-based Superconductor Simulations Spin Out New Possibilities on Titan

In a Nature Physics paper published in October, Zhiping Yin, Kristjan Haule, and Gabriel Kotliar of Rutgers University compute the dynamic spin structure factors of 15 iron-based materials, including several high-temperature superconductors, in unprecedented detail.

Katie Elyce JonesOctober 30, 2014

Monte Carlo