Document Type
Article
Publication Date
6-3-2021
Publication Title
Physical Review Letters
Volume
127
Issue
1
First page number:
1
Last page number:
6
Abstract
A reversible density driven insulator to metal to insulator transition in high-spin MnS2 is experimentally observed, leading with a colossal electrical resistance drop of 108 ω by 12 GPa. Density functional theory simulations reveal the metallization to be unexpectedly driven by previously unoccupied S22- σ3p∗ antibonding states crossing the Fermi level. This is a unique variant of the charge transfer insulator to metal transition for negative charge transfer insulators having anions with an unsaturated valence. By 36 GPa the emergence of the low-spin insulating arsenopyrite (P21/c) is confirmed, and the bulk metallicity is broken with the system returning to an insulative electronic state.
Disciplines
Physical Chemistry | Physics
File Format
File Size
1462 KB
Language
English
Rights
IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/
Repository Citation
Durkee, D.,
Dasenbrock-Gammon, N.,
Smith, G.,
Snider, E.,
Smith, D.,
Childs, C.,
Kimber, S.,
Lawler, K.,
Dias, R.,
Salamat, A.
(2021).
Colossal Density-Driven Resistance Response in the Negative Charge Transfer Insulator MnS2.
Physical Review Letters, 127(1),
1-6.
http://dx.doi.org/10.1103/PhysRevLett.127.016401