References of "De Beule, Christophe 50041156"
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See detailNetwork model for periodically strained graphene
De Beule, Christophe UL; Võ Tiến, Phong; Mele, Eugene John

in Physical Review. B (2023), 107

The long-wavelength physics of monolayer graphene in the presence of periodic strain fields has a natural chiral scattering network description. When the strain field varies slowly compared to the ... [more ▼]

The long-wavelength physics of monolayer graphene in the presence of periodic strain fields has a natural chiral scattering network description. When the strain field varies slowly compared to the graphene lattice and the effective magnetic length of the induced valley pseudomagnetic field, the low-energy physics can be understood in terms of valley-polarized percolating domain-wall modes. Inspired by a recent experiment, we consider a strain field with threefold rotation and mirror sym- metries but without twofold rotation symmetry, resulting in a system with the connectivity of the oriented kagome network. Scattering processes in this network are captured by a symmetry- constrained phenomenological S matrix. We analyze the phase diagram of the kagome network, and show that the bulk physics of the strained graphene can be qualitatively captured by the network when we account for a percolation transition at charge neutrality. We also discuss the limitations of this approach to properly account for boundary physics. [less ▲]

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See detailBlack hole mirages: electron lensing and Berry curvature effects in inhomogeneously tilted Weyl semimetals
Haller, Andreas UL; Hegde, Suraj; Xu, Chen et al

in arXiv (2022)

We study electronic transport in Weyl semimetals with spatially varying nodal tilt profiles. We find that the flow of electrons can be guided precisely by judiciously chosen tilt profiles. In a wide ... [more ▼]

We study electronic transport in Weyl semimetals with spatially varying nodal tilt profiles. We find that the flow of electrons can be guided precisely by judiciously chosen tilt profiles. In a wide regime of parameters, we show that electron flow is described well by semiclassical equations of motion similar to the ones governing gravitational attraction. This analogy provides a physically transparent tool for designing tiltronic devices, such as electronic lenses. The analogy to gravity circumvents the notoriously difficult full-fledged description of inhomogeneous solids, but a comparison to microscopic lattice simulations shows that it is only valid for trajectories sufficiently far from analogue black holes. We finally comment on the Berry curvature-driven transverse motion, and relate the latter to spin precession physics. [less ▲]

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See detailNetwork model and four-terminal transport in minimally twisted bilayer graphene
De Beule, Christophe UL; Dominguez, Fernando; Recher, Patrik

in Physical Review. B (2021), 104

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See detailEffective Floquet model for minimally twisted bilayer graphene
De Beule, Christophe UL; Dominguez, Fernando; Recher, Patrik

in Physical Review. B (2021), 103

Detailed reference viewed: 36 (2 UL)