Twisted bilayered graphenes at magic angles and Casimir interactions: correlation-driven effects

Rodriguez-Lopez, Pablo; Le, Dai-Nam; Calderón, María J.; Bascones, Elena; Woods, Lilia M.

doi:10.1088/2053-1583/ac97f2

Twisted bilayered graphenes at magic angles and Casimir interactions: correlation-driven effects

Journal Article · Thu Oct 27 00:00:00 EDT 2022 · 2D Materials

DOI:https://doi.org/10.1088/2053-1583/ac97f2· OSTI ID:2419161

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Universidad Rey Juan Carlos, Madrid (Spain); OSTI
Univ. of South Florida, Tampa, FL (United States); Ton Duc Thang University, Ho Chi Minh City (Vietnam)
Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain). Instituto de Ciencia de Materiales de Madrid (ICMM)
Univ. of South Florida, Tampa, FL (United States)

Twisted bilayered graphenes (TBGs) at magic angles are systems housing long ranged periodicity of moiré patterns together with short ranged periodicity associated with the individual graphenes. Such materials are a fertile ground for novel states largely driven by electronic correlations. Here we find that the ubiquitous Casimir force can serve as a platform for macroscopic manifestations of the quantum effects stemming from the magic angle bilayered graphenes properties and their phases determined by electronic correlations. In conclusion, by utilizing comprehensive calculations for the electronic and optical response, we find that Casimir torque can probe anisotropy from the Drude conductivities in nematic states, while repulsion in the Casimir force can help identify topologically nontrivial phases in magic angle TBGs.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of South Florida, Tampa, FL (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-06ER46297

OSTI ID:: 2419161

Journal Information:: 2D Materials, Journal Name: 2D Materials Journal Issue: 1 Vol. 10; ISSN 2053-1583

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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