A quantum theory of the nearly frozen charge glass

Fratini, Simone; Driscoll, Katherine; Ciuchi, Sergio; Ralko, Arnaud

doi:10.21468/SciPostPhys.14.5.124

SciPost Physics

A quantum theory of the nearly frozen charge glass

Simone Fratini, Katherine Driscoll, Sergio Ciuchi, Arnaud Ralko

SciPost Phys. 14, 124 (2023) · published 23 May 2023

doi: 10.21468/SciPostPhys.14.5.124
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Abstract

We study long-range interacting electrons on the triangular lattice using mixed quantum/classical simulations going beyond the usual classical descriptions of the lattice Coulomb fluid. Our results in the strong interaction limit indicate that the proliferation of quantum defects governs the low-temperature dynamics of this strongly frustrated system. The present theoretical findings explain the phenomenology observed in the $\theta$-ET$_2$X materials as they fall out of equilibrium, including glassiness, resistive switching and a strong sensitivity to the electronic structure anisotropy. The method devised here can be easily generalized to address other systems and devices where itinerant and correlation-localized degrees of freedom are intertwined on short lengthscales.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.14.5.124
TI  - A quantum theory of the nearly frozen charge glass
PY  - 2023/05/23
UR  - https://scipost.org/SciPostPhys.14.5.124
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 14
IS  - 5
SP  - 124
A1  - Fratini, Simone
AU  - Driscoll, Katherine
AU  - Ciuchi, Sergio
AU  - Ralko, Arnaud
AB  - We study long-range interacting electrons on the triangular lattice using mixed quantum/classical simulations going beyond the usual classical descriptions of the lattice Coulomb fluid. Our results in the strong interaction limit indicate that the proliferation of quantum defects governs the low-temperature dynamics of this strongly frustrated system. The present theoretical findings explain the phenomenology observed in the $\theta$-ET$_2$X materials as they fall out of equilibrium, including glassiness, resistive switching and a strong sensitivity to the electronic structure anisotropy. The method devised here can be easily generalized to address other systems and devices where itinerant and correlation-localized degrees of freedom are intertwined on short lengthscales.
ER  -

@Article{10.21468/SciPostPhys.14.5.124,
	title={{A quantum theory of the nearly frozen charge glass}},
	author={Simone Fratini and Katherine Driscoll and Sergio Ciuchi and Arnaud Ralko},
	journal={SciPost Phys.},
	volume={14},
	pages={124},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.14.5.124},
	url={https://scipost.org/10.21468/SciPostPhys.14.5.124},
}

Cited by 4

Authors / Affiliations: mappings to Contributors and Organizations

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¹ Simone Fratini,
¹ Katherine Driscoll,
² Sergio Ciuchi,
¹ Arnaud Ralko

Funder for the research work leading to this publication

Horizon 2020 (through Organization: European Commission [EC])