Quantum transport in flat bands and super-metallicity
- URL: http://arxiv.org/abs/2007.05309v1
- Date: Fri, 10 Jul 2020 11:17:30 GMT
- Title: Quantum transport in flat bands and super-metallicity
- Authors: G. Bouzerar and D. Mayou
- Abstract summary: Quantum physics in flat-band (FB) systems embodies a variety of exotic phenomenon and even counter intuitive features.
The quantum transport in several graphene based compounds that exhibit a flat band and a tunable gap is investigated.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum physics in flat-band (FB) systems embodies a variety of exotic
phenomenon and even counter intuitive features. The quantum transport in
several graphene based compounds that exhibit a flat band and a tunable gap is
investigated. Despite the localized nature of the FB states and a zero group
velocity, a super-metallic (SM) phase at the FB energy is revealed. The SM
phase is robust against the inelastic scattering strength and controlled only
by the inter-band transitions between the FB and the dispersive bands. The SM
phase appears insensitive and quasi independent of the gap amplitude and nature
of the lattice (disordered or nano-patterned). The universal nature of the
unconventional FB transport is illustrated with the case of electrons in the
Lieb lattice.
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