Resonant tunneling and the quasiparticle lifetime in graphene/boron nitride/graphene heterostructures

Guerrero-Becerra, Karina A. and Tomadin, Andrea and Polini, Marco (2016) Resonant tunneling and the quasiparticle lifetime in graphene/boron nitride/graphene heterostructures. Physical review B, 93 (12). ISSN 2469-9950

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Abstract

Tunneling of quasiparticles between two nearly aligned graphene sheets produces resonant current-voltage characteristics because of the quasiexact conservation of in-plane momentum. We claim that, in this regime, vertical transport in graphene/boron nitride/graphene heterostructures carries precious information on electron-electron interactions and the quasiparticle spectral function of the two-dimensional electron system in graphene. We present extensive microscopic calculations of the tunneling spectra with the inclusion of quasiparticle lifetime effects and elucidate the range of parameters (interlayer bias, temperature, twist angle, and gate voltage) under which electron-electron interaction physics emerges.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
ID Code:
129047
Deposited By:
Deposited On:
23 Nov 2018 09:58
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Jan 2020 05:01