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TT: Fachverband Tiefe Temperaturen
TT 39: Twisted Materials / Systems (joint session TT/HL)
TT 39.3: Vortrag
Mittwoch, 19. März 2025, 17:30–17:45, H31
Quantum diffusion in sheared bilayer graphene — •Taher Rhouma1, Florie Mesple2, Vincent Renard3, and Guy Trambly de Laissardière1 — 1LPTM, CY Cergy Paris Univ., CNRS, Cergy-Pontoise, France. — 2Dept. Physics, Univ. of Washington, USA — 3CEA, Univ. Grenoble Alpes, IRIG, PHELIQS, Grenoble, France
The identification of correlated insulators and superconductivity in magic-angle twisted bilayer graphene (MATBG) has sparked significant interest in its electronic properties [1]. When examining the MATBG moiré patterns along the line with alternating regions of AA, AB, and BA, we observe striking similarities to those found in a 1D moiré of a sheared bilayer graphene, where one layer is laterally displaced. That may lead to a localization of the electronic states [2]. In this study, we investigate numerically the electronic and quantum transport properties in sheared bilayer graphene, focusing on how the degree of shear influences these characteristics.
[1] Y. Cao, et al., Nature 556, 43 (2018); Nature 556, 80 (2018).
[2] J. Gonzalez, Phys. Rev. B 94, 165401 (2016).
Keywords: Sheared bilayer graphene; Twisted bilayer graphene; 2D Materials; Quantum transport