Regensburg 2019 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 22: Superconductivity: Theory
TT 22.8: Vortrag
Dienstag, 2. April 2019, 11:30–11:45, H7
Kohn-Luttinger superconductivity and chirality in twisted bilayer graphene — •Tobias Stauber1, Jose Gonzalez2, Tony Low3, and Guillermo Gomez-Santos4 — 1Departamento de Teoria y Simulacion de Materiales, Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049 Madrid, Spain — 2Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain — 3Department of Electrical & Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA — 4Departamento de Física de la Materia Condensada, Instituto Nicolás Cabrera and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Twisted bilayer graphene has attracted much attention due to its novel electronic and optical properties. Here, we will present our recent theoretical results on the superconducting instability and also on the inherent chirality of the system. In particular, we will show that the Kohn-Luttinger mechanism might be active in TBL [1]. Furthermore, we find a paramagnetic response around the neutrality point, a longitudinal Hall effect and longitudinal plasmonic excitations which are accommodated by a longitudinal magnetic moment [2,3].
J. Gónzalez and T. Stauber, arXiv:1807.01275
T. Stauber, T. Low, and G. Gómez-Santos, Phys. Rev. Lett. 120, 046801 (2018)
T. Stauber, T. Low, and G. Gómez-Santos, Phys. Rev. B 98, 195414 (2018)