Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session R48: Superconductivity: Theories and Models II
8:00 AM–11:00 AM,
Thursday, March 5, 2020
Room: Mile High Ballroom 1A
Sponsoring
Unit:
DCMP
Chair: Herbert Fotso, University at Albany
Abstract: R48.00003 : A New Superfast Method for Combinatorial Search of High-Temperature Hydride Superconductors under Extreme Pressures
Presenter:
Tianran Chen
(National Institute of Standards and Technology)
Authors:
Tianran Chen
(National Institute of Standards and Technology)
Taner Yildirim
(National Institute of Standards and Technology)
measurements. However, the calculation of electron-phonon coupling and the corresponding Tc for a given system is usually computationally very expensive, limiting the application of computational search to a few numbers of candidate systems.
In this work, we have developed a super-efficient and fast method for searching high-Tc hydride superconductors.
We introduce new "metrics" that are strongly correlated to strong electron-phonon coupling and Tc but it is much faster to calculate them. Using our new method, we have searched more than 50,000 binary hydride superconductors and predicted many new high-Tc systems, one of which may even break the current record. Our work will not only greatly accelerate the
discovery of new hydride superconductors but also give a detailed understanding of important factors that yield superconductivity near room temperature at high pressures.
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