TY - JOUR

T1 - Resonant tunneling and the quasiparticle lifetime in graphene/boron nitride/graphene heterostructures

AU - Guerrero-Becerra, Karina A.

AU - Tomadin, Andrea

AU - Polini, Marco

PY - 2016/3/15

Y1 - 2016/3/15

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevB.93.125417

DO - 10.1103/PhysRevB.93.125417

M3 - Journal article

VL - 93

JO - Physical review B

JF - Physical review B

SN - 2469-9950

IS - 12

M1 - 125417

ER -