Article (Scientific journals)
Firefly Algorithm Applied to Noncollinear Magnetic Phase Materials Prediction
Payne, Adam; Avendaño-Franco, Guillermo; Bousquet, Eric et al.
2018In Journal of Chemical Theory and Computation, 14, p. 4455
Peer Reviewed verified by ORBi
 

Files


Full Text
JChemTheoryCcomput_14_p4455_2018__Firefly_non-collinear.pdf
Publisher postprint (4.57 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
non-collinear magnetism; meta-heuristic firefly algorithm; DFT
Abstract :
[en] In most noncollinear crystal magnets, the number of metastable states is quite large and any calculation that tries to predict the ground state can fall into one of the possible metastable phases. In this work, we generalize the population based meta-heuristic firefly algorithm to the problem of the noncollinear magnetic phase ground state prediction within density functional theory (DFT). We extend the different steps in the firefly algorithm to this specific problem by using polarized constrained DFT calculations, whereby using Lagrange multipliers the directions of the atom magnetic moments remain fixed. By locking the directions of the magnetic moments at each search iteration, the method allows one to explore the entire Born−Oppenheimer energy surface of existing and physically plausible noncollinear configurations present in a crystal. We demonstrate that the number of minima can be large, which restrains the use of exhaustive searches.
Research center :
PhyTheMa
Disciplines :
Physics
Author, co-author :
Payne, Adam
Avendaño-Franco, Guillermo
Bousquet, Eric  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Romero, Aldo ;  Université de Liège - ULiège > Département de physique > Physique des matériaux et nanostructures
Language :
English
Title :
Firefly Algorithm Applied to Noncollinear Magnetic Phase Materials Prediction
Publication date :
02 July 2018
Journal title :
Journal of Chemical Theory and Computation
ISSN :
1549-9618
eISSN :
1549-9626
Publisher :
American Chemical Society, United States - District of Columbia
Volume :
14
Pages :
4455
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
Tier-1 supercomputer
Funders :
Céci (Grant No. 2.5020.1 FRS-FNRS), Tier-1 supercomputerof the Fédération Wallonie-Bruxelles funded by the Walloon Region (Grant No. 1117545)
Available on ORBi :
since 15 October 2018

Statistics


Number of views
41 (5 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
9
Scopus citations®
without self-citations
8
OpenCitations
 
7

Bibliography


Similar publications



Contact ORBi