11 papers
Spin lifetime anisotropy in graphene induced by the SiO2 interface
Aron W. Cummings, Chunhao Guo, Andrew Grieder +5
Understanding how common dielectric substrates influence the spin transport properties of graphene is essential for advancing graphene-based spintronic technologies. Here we use a…
Graphene-based Photodetector with Engineered Hot Carrier Cooling Dynamics
Yishu Huang, Anand Nivedan, Florian Ludwig +9
Graphene has emerged as a promising material for integration into silicon photonics, owing to its ultrafast and broadband photoresponse without the need for an external bias voltag…
Dielectric control of ultrafast carrier dynamics and transport in graphene
Hai I. Wang, Xiaoyu Jia, Anand Nivedan +4
Understanding the ultrafast dynamics of photoexcited charges in graphene is essential, as the microscopic mechanisms underlying these dynamics determine many of graphene's optical,…
Real-Time Out-of-Equilibrium Quantum Dynamics in Disordered Materials
Luis M. Canonico, Stephan Roche, Aron W. Cummings
We report a linear-scaling numerical method for exploring nonequilibrium electron dynamics in systems of arbitrary complexity. Based on the Chebyshev expansion of the time evolutio…
Quantum transport in nitrogen-doped nanoporous graphenes
Gaetano Calogero, Isaac Alcón, Alan E. Anaya Morales +6
Bottom-up on-surface synthesized nanoporous graphenes (NPGs), realized as 2D arrays of laterally covalently bonded -conjugated graphene nanoribbons (GNRs), are a family of carb…
Proximity Effects Between the Graphene Quasicrystal and Magic-Angle Twisted Bilayer Graphene
Pedro Alcázar Guerrero, Viet-Hung Nguyen, Aron W. Cummings +2
We present a numerical study of three-layer graphene heterostructures in which the layers are twisted by the magic angle (1.1) or by to form a graphe…