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

• URL: http://arxiv.org/abs/2210.02378v1
• Date: Wed, 5 Oct 2022 16:44:49 GMT
• Title: Twisted bilayered graphenes at magic angles and Casimir interactions: correlation-driven effects
• Authors: Pablo Rodriguez-Lopez, Dai-Nam Le, Mar\'ia J. Calder\'on, Elena Bascones, Lilia M. Woods
• Abstract summary: Twisted bilayered graphenes at magic angles are a fertile ground for novel states 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Twisted bilayered graphenes at magic angles are systems housing long ranged periodicity of Moir\'e pattern 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. 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 twisted bilayered graphenes.

Related papers

• Observation of string breaking on a (2 + 1)D Rydberg quantum simulator [59.63568901264298]
  We report the observation of string breaking in synthetic quantum matter using a programmable quantum simulator. Our work paves a way to explore phenomena in high-energy physics using programmable quantum simulators.
  arXiv  Detail & Related papers  (2024-10-21T22:33:16Z)
• A Universal Roadmap For Searching Repulsive Casimir Forces Between Magneto-Electric Materials [0.0]
  We calculate the Casimir forces between materials with time-reversal symmetry and/or parity symmetry breaking. We obtain a universal phase diagram governing the sign of symmetry-breaking-induced Casimir forces.
  arXiv  Detail & Related papers  (2024-03-01T18:41:04Z)
• Giant anisotropy and Casimir phenomena: the case of carbon nanotube metasurfaces [0.0]
  The Casimir interaction and torque are related phenomena originating from the exchange of electromagnetic excitations between objects. It is found that the Casimir interaction is dominated by thermal fluctuations at sub-micron separations, while the torque is primarily determined by quantum mechanical effects. Our study suggests that nanostructured anisotropic materials can serve as novel platforms to uncover new functionalities in ubiquitous Casimir phenomena.
  arXiv  Detail & Related papers  (2023-11-08T20:07:21Z)
• Observation of Nagaoka Polarons in a Fermi-Hubbard Quantum Simulator [0.1319201600959248]
  Nagaoka insulator famously proved that introducing a single itinerant charge can transform a paramagnetic insulator into a ferromagnet through path interference. Here we demonstrate the emergence of Nagaoka polarons in a Hubbard system realized with strongly interacting fermions in a triangular optical lattice.
  arXiv  Detail & Related papers  (2023-08-23T17:37:34Z)
• A knob to tune the Casimir-Lifshitz force with gapped metals [0.0]
  Gapped metals offer the potential to manipulate the Casimir-Lifshitz interaction. Off-stoichiometric effects in gapped metals can be used to control the magnitude and, in some cases, even the sign of Casimir-Lifshitz interactions.
  arXiv  Detail & Related papers  (2023-07-30T09:38:49Z)
• Dipolar quantum solids emerging in a Hubbard quantum simulator [45.82143101967126]
  Long-range and anisotropic interactions promote rich spatial structure in quantum mechanical many-body systems. We show that novel strongly correlated quantum phases can be realized using long-range dipolar interaction in optical lattices. This work opens the door to quantum simulations of a wide range of lattice models with long-range and anisotropic interactions.
  arXiv  Detail & Related papers  (2023-06-01T16:49:20Z)
• Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
  A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins. These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field. We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
  arXiv  Detail & Related papers  (2023-05-10T12:59:07Z)
• High-Harmonic Generation with a twist: all-optical characterization of magic-angle twisted bilayer graphene [0.0]
  We show that the band structure of magic-angle twisted bilayer graphene is imprinted onto its high-harmonic spectrum. Results show that high harmonic generation can be used as a spectroscopy tool for measuring the twist angle and also the electronic properties of twisted bilayer graphene.
  arXiv  Detail & Related papers  (2023-02-05T16:44:32Z)
• Relativistic aspects of orbital and magnetic anisotropies in the chemical bonding and structure of lanthanide molecules [60.17174832243075]
  We study the electronic and ro-vibrational states of heavy homonuclear lanthanide Er2 and Tm2 molecules by applying state-of-the-art relativistic methods. We were able to obtain reliable spin-orbit and correlation-induced splittings between the 91 Er2 and 36 Tm2 electronic potentials dissociating to two ground-state atoms.
  arXiv  Detail & Related papers  (2021-07-06T15:34:00Z)
• Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
  We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
  arXiv  Detail & Related papers  (2020-11-16T08:03:44Z)
• Exploring complex graphs using three-dimensional quantum walks of correlated photons [52.77024349608834]
  We introduce a new paradigm for the direct experimental realization of excitation dynamics associated with three-dimensional networks. This novel testbed for the experimental exploration of multi-particle quantum walks on complex, highly connected graphs paves the way towards exploiting the applicative potential of fermionic dynamics in integrated quantum photonics.
  arXiv  Detail & Related papers  (2020-07-10T09:15:44Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.