Colossal Density-Driven Resistance Response in the Negative Charge Transfer Insulator MnS2

Authors

Dylan Durkee, University of Nevada, Las VegasFollow
Nathan Dasenbrock-Gammon, University of Rochester
G. Alexander Smith, University of Nevada, Las Vegas
Elliot Snider, University of Rochester
Dean Smith, University of Nevada, Las Vegas
Christian Childs, University of Nevada, Las Vegas
Simon A.J. Kimber, Université de Bourgogne
Keith V. Lawler, University of Nevada, Las VegasFollow
Ranga P. Dias, University of Rochester
Ashkan Salamat, University of Nevada, Las VegasFollow

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

pdf

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