Quantum Lifetime Spectroscopy and Magnetotunneling in Double Bilayer Graphene Heterostructures
arXiv:2105.07104 · doi:10.1103/PhysRevLett.127.117701
Abstract
We describe a tunneling spectroscopy technique in a double bilayer graphene heterostructure where momentum-conserving tunneling between different energy bands serves as an energy filter for the tunneling carriers, and allows a measurement of the quasi-particle state broadening at well defined energies. The broadening increases linearly with the excited state energy with respect to the Fermi level, and is weakly dependent on temperature. In-plane magnetotunneling reveals a high degree of rotational alignment between the graphene bilayers, and an absence of momentum randomizing processes.
5 pages, 5 figures
References in corpus (9)
- The electronic properties of bilayer graphene
- Acoustic phonon scattering limited carrier mobility in 2D extrinsic graphene
- Ab Initio Theory of Gate Induced Gaps in Graphene Bilayers
- Scanning Tunneling Spectroscopy of Graphene on Graphite
- Twist-controlled resonant tunnelling in graphene-boron nitride-graphene heterostructures
- Tuning the valley and chiral quantum state of Dirac electrons in van der Waals heterostructures
- First-Principles Study of Electron Linewidths in Graphene
- Coherent Interlayer Tunneling and Negative Differential Resistance with High Current Density in Double Bilayer Graphene-WSe2 Heterostructures
- Energy spectrum of graphene multilayers in a parallel magnetic field